HOBER Pipeline Head Loss Calculator - hobertek.com<\/title>\r\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&display=swap\" rel=\"stylesheet\">\r\n <style>\r\n :root {\r\n --primary: #002080;\r\n --accent: #2680ff;\r\n --bg: #f8f9fc;\r\n --text: #333;\r\n --border: #dde2f2;\r\n }\r\n * {box-sizing:border-box;}\r\n body {\r\n margin:0;\r\n font-family:'Inter',sans-serif;\r\n background:#ffffff;\r\n color:var(--text);\r\n }\r\n .calculator-wrapper {\r\n max-width:460px;\r\n margin:30px auto;\r\n border-radius:16px;\r\n overflow:hidden;\r\n box-shadow:0 15px 40px rgba(0,0,0,0.12);\r\n background:#fff;\r\n border:1px solid var(--border);\r\n }\r\n .header-bar {\r\n background:var(--primary);\r\n color:#fff;\r\n padding:18px 20px;\r\n font-size:18px;\r\n font-weight:700;\r\n text-align:center;\r\n }\r\n .hober-brand {\r\n font-size:14px;\r\n margin-top:8px;\r\n opacity:0.9;\r\n }\r\n .form-row {\r\n display:grid;\r\n grid-template-columns:1.3fr 1fr 0.7fr;\r\n align-items:center;\r\n padding:14px 16px;\r\n border-bottom:1px solid var(--border);\r\n }\r\n .form-row:nth-child(even){background:#f8f9fc;}\r\n .label {font-weight:600;font-size:14.5px;}\r\n .control input, .control select {\r\n width:100%;\r\n padding:10px 12px;\r\n border-radius:10px;\r\n border:none;\r\n background:var(--primary);\r\n color:#fff;\r\n font-size:15px;\r\n text-align:center;\r\n }\r\n .control input::placeholder {color:#a0c0ff;}\r\n .unit {font-size:13.5px;color:#555;padding-left:8px;}\r\n .section-title {\r\n background:#002080;\r\n color:#fff;\r\n font-weight:600;\r\n padding:12px 16px;\r\n font-size:15px;\r\n }\r\n .fitting-row {\r\n display:grid;\r\n grid-template-columns:1.4fr 1fr;\r\n padding:12px 16px;\r\n border-bottom:1px solid var(--border);\r\n align-items:center;\r\n }\r\n .fitting-row:nth-child(even){background:#f8f9fc;}\r\n .counter {\r\n display:grid;\r\n grid-template-columns:1fr 1.5fr 1fr;\r\n border-radius:10px;\r\n overflow:hidden;\r\n border:1px solid #c0c8e0;\r\n height:44px;\r\n }\r\n .counter button {\r\n background:#fff;\r\n border:none;\r\n font-size:20px;\r\n cursor:pointer;\r\n font-weight:bold;\r\n color:var(--primary);\r\n }\r\n .counter button:hover {background:#eef2ff;}\r\n .counter-value {\r\n background:var(--primary);\r\n color:#fff;\r\n font-weight:600;\r\n display:flex;\r\n align-items:center;\r\n justify-content:center;\r\n font-size:16px;\r\n }\r\n .btn-calc {\r\n width:100%;\r\n padding:16px;\r\n border:none;\r\n background:var(--accent);\r\n color:#fff;\r\n font-size:17px;\r\n font-weight:600;\r\n cursor:pointer;\r\n }\r\n .btn-calc:hover {background:#1765d2;}\r\n .readonly {\r\n background:var(--primary);\r\n color:#fff;\r\n font-weight:600;\r\n }\r\n .result-section {\r\n background:#002080;\r\n color:#fff;\r\n padding:16px;\r\n font-size:16px;\r\n text-align:center;\r\n }\r\n .contact-bar {\r\n background:#001050;\r\n color:#fff;\r\n text-align:center;\r\n padding:20px;\r\n font-size:14px;\r\n }\r\n .contact-bar a {color:#fff;text-decoration:underline;}\r\n <\/style>\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"calculator-wrapper\">\r\n <div class=\"header-bar\">\r\n \u062d\u0627\u0633\u0628\u0629 \u062e\u0633\u0627\u0631\u0629 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER\r\n <div class=\"hober-brand\">\u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u2022 \u0645\u0635\u0646\u0639 \u0645\u0646\u0630 15 \u0639\u0627\u0645\u064b\u0627 \u2022 hobertek.com<\/div>\r\n <\/div>\r\n\r\n \r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0633\u0627\u0626\u0644<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"fluidName\" value=\"Clean Water\"><\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"flowRate\" value=\"60\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0645\u062a\u0631 \u0645\u0643\u0639\u0628\/\u0633\u0627\u0639\u0629<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0645\u0627\u062f\u0629 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628<\/div>\r\n <div class=\"control\">\r\n <select id=\"pipeMaterial\">\r\n <option value=\"cast_iron\">\u0623\u0646\u0628\u0648\u0628 \u062d\u062f\u064a\u062f \u0632\u0647\u0631 \u062c\u062f\u064a\u062f<\/option>\r\n <option value=\"steel\" selected>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a<\/option>\r\n <option value=\"pe\">\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646\/\u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646 \u0639\u0627\u0644\u064a \u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/option>\r\n <option value=\"pvc\">\u0623\u0646\u0628\u0648\u0628 PVC\/UPVC<\/option>\r\n <\/select>\r\n <\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0642\u0637\u0631 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"diameter\" placeholder=\"\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644 110\" value=\"110\"><\/div>\r\n <div class=\"unit\">\u0645\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0625\u062c\u0645\u0627\u0644\u064a \u0637\u0648\u0644 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"length\" placeholder=\"\u0645\u062b\u0644\u0627 300\" value=\"300\"><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u0644\u0632\u0648\u062c\u0629<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"viscosity\" value=\"1\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0633\u064a \u0628\u064a \u0625\u0633<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u062b\u0642\u0644 \u0627\u0644\u0646\u0648\u0639\u064a<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"specificGravity\" value=\"1\" step=\"0.01\"><\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0631\u0623\u0633 \u062b\u0627\u0628\u062a (\u0627\u062e\u062a\u064a\u0627\u0631\u064a)<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"staticHead\" value=\"80\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n\r\n \r\n <div class=\"section-title\">\u0643\u0645\u064a\u0629 \u0627\u0644\u062a\u0631\u0643\u064a\u0628\u0627\u062a (+\/\u2212)<\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0643\u0648\u0639 90 \u062f\u0631\u062c\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('elbow90',-1)\">-<\/button><div class=\"counter-value\" id=\"elbow90\">2<\/div><button onclick=\"c('elbow90',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">45 \u062f\u0631\u062c\u0629 \u0627\u0644\u0643\u0648\u0639<\/div>\r\n <div class=\"counter\"><button onclick=\"c('elbow45',-1)\">-<\/button><div class=\"counter-value\" id=\"elbow45\">0<\/div><button onclick=\"c('elbow45',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u062a\u064a - \u062a\u062f\u0641\u0642 \u0627\u0644\u0641\u0631\u0639<\/div>\r\n <div class=\"counter\"><button onclick=\"c('teeBranch',-1)\">-<\/button><div class=\"counter-value\" id=\"teeBranch\">1<\/div><button onclick=\"c('teeBranch',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u062a\u064a - \u0627\u0644\u062c\u0631\u064a \u0627\u0644\u0645\u0633\u062a\u0642\u064a\u0645<\/div>\r\n <div class=\"counter\"><button onclick=\"c('teeRun',-1)\">-<\/button><div class=\"counter-value\" id=\"teeRun\">0<\/div><button onclick=\"c('teeRun',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0643\u0631\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('ballValve',-1)\">-<\/button><div class=\"counter-value\" id=\"ballValve\">2<\/div><button onclick=\"c('ballValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0628\u0648\u0627\u0628\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('gateValve',-1)\">-<\/button><div class=\"counter-value\" id=\"gateValve\">1<\/div><button onclick=\"c('gateValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0641\u062d\u0635<\/div>\r\n <div class=\"counter\"><button onclick=\"c('checkValve',-1)\">-<\/button><div class=\"counter-value\" id=\"checkValve\">1<\/div><button onclick=\"c('checkValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0643\u0631\u0648\u064a\/\u0632\u0627\u0648\u064a\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('angleValve',-1)\">-<\/button><div class=\"counter-value\" id=\"angleValve\">0<\/div><button onclick=\"c('angleValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n\r\n <button class=\"btn-calc\" onclick=\"calculateLoss()\">\u062d\u0633\u0627\u0628 \u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0631\u0623\u0633<\/button>\r\n\r\n \r\n <div class=\"result-section\">\u0646\u062a\u0627\u0626\u062c \u0627\u0644\u062d\u0633\u0627\u0628<\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0633\u0631\u0639\u0629<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"velocity\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0622\u0646\u0633\u0629<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 (hf)<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headLossF\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 (hj)<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headLossJ\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0631\u0623\u0633 \u062b\u0627\u0628\u062a<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headStaticOut\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0625\u062c\u0645\u0627\u0644\u064a \u0631\u0623\u0633 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a\u0629<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headTotal\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"pressureDrop\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u062d\u0627\u062c\u0650\u0632<\/div>\r\n <\/div>\r\n\r\n <div class=\"contact-bar\">\r\n \u0647\u0630\u0647 \u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u0645\u0646 HOBER \u00ae<br>\r\n \u0647\u0644 \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u062a\u0635\u0645\u064a\u0645 \u062f\u0642\u064a\u0642 \u0644\u0646\u0638\u0627\u0645 \u0645\u0636\u062e\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0634\u0645\u0633\u064a\u0629 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0647\u0630\u0647 \u0627\u0644\u0646\u062a\u0627\u0626\u062c\u061f<br>\r\n \u0627\u062a\u0635\u0644 \u0628\u0641\u0631\u064a\u0642 Hober \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u0645\u062c\u0627\u0646\u064a \u2192 <a href=\"mailto:sales@hobertek.com\">sales@hobertek.com<\/a>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function c(id, delta){\r\n const el = document.getElementById(id);\r\n let v = parseInt(el.textContent, 10);\r\n v += delta;\r\n if (v < 0) v = 0;\r\n el.textContent = v;\r\n }\r\n function calculateLoss(){\r\n const Q_m3hr = parseFloat(document.getElementById('flowRate').value) || 0;\r\n const D_mm = parseFloat(document.getElementById('diameter').value) || 0;\r\n const L_m = parseFloat(document.getElementById('length').value) || 0;\r\n const mu_cps = parseFloat(document.getElementById('viscosity').value) || 1;\r\n const sg = parseFloat(document.getElementById('specificGravity').value) || 1;\r\n const Hs = parseFloat(document.getElementById('staticHead').value) || 0;\r\n\r\n if (Q_m3hr <= 0 || D_mm <= 0 || L_m <= 0){\r\n alert('Please enter at least: Flow rate, pipe diameter and total length.');\r\n return;\r\n }\r\n\r\n const Q_m3s = Q_m3hr \/ 3600;\r\n const D_m = D_mm \/ 1000;\r\n const rho = sg * 1000;\r\n const mu = mu_cps * 0.001;\r\n const g = 9.81;\r\n\r\n const area = Math.PI * D_m * D_m \/ 4;\r\n const v = Q_m3s \/ area;\r\n\r\n const Re = rho * v * D_m \/ mu;\r\n\r\n \/\/ Roughness \u03b5 (m)\r\n const pipeMaterial = document.getElementById('pipeMaterial').value;\r\n let epsilon = 0.00015; \/\/ default steel\r\n if (pipeMaterial === 'cast_iron') epsilon = 0.00026;\r\n if (pipeMaterial === 'pe' || pipeMaterial === 'pvc') epsilon = 0.0000015;\r\n\r\n \/\/ Friction factor f (Swamee-Jain)\r\n let f;\r\n if (Re < 2300){\r\n f = 64 \/ Re;\r\n }else{\r\n const term = (epsilon\/(3.7*D_m)) + (5.74\/Math.pow(Re,0.9));\r\n f = 0.25 \/ Math.pow(Math.log10(term), 2);\r\n }\r\n\r\n const hf = f * (L_m \/ D_m) * (v*v\/(2*g));\r\n\r\n \/\/ Local losses K\r\n const K = {\r\n elbow90: 0.9,\r\n elbow45: 0.4,\r\n teeBranch: 1.0,\r\n teeRun: 0.6,\r\n ballValve: 0.05,\r\n gateValve: 0.2,\r\n checkValve: 2.0,\r\n angleValve: 5.0\r\n };\r\n\r\n const K_total = \r\n K.elbow90 * parseInt(document.getElementById('elbow90').textContent) +\r\n K.elbow45 * parseInt(document.getElementById('elbow45').textContent) +\r\n K.teeBranch * parseInt(document.getElementById('teeBranch').textContent) +\r\n K.teeRun * parseInt(document.getElementById('teeRun').textContent) +\r\n K.ballValve * parseInt(document.getElementById('ballValve').textContent) +\r\n K.gateValve * parseInt(document.getElementById('gateValve').textContent) +\r\n K.checkValve * parseInt(document.getElementById('checkValve').textContent) +\r\n K.angleValve * parseInt(document.getElementById('angleValve').textContent);\r\n\r\n const hj = K_total * v*v \/ (2*g);\r\n\r\n const H_tot = Hs + hf + hj;\r\n const deltaP_bar = (rho * g * (hf + hj)) \/ 1e5;\r\n\r\n document.getElementById('velocity').value = v.toFixed(2);\r\n document.getElementById('headLossF').value = hf.toFixed(2);\r\n document.getElementById('headLossJ').value = hj.toFixed(2);\r\n document.getElementById('headStaticOut').value = Hs.toFixed(2);\r\n document.getElementById('headTotal').value = H_tot.toFixed(2);\r\n document.getElementById('pressureDrop').value = deltaP_bar.toFixed(3);\r\n }\r\n<\/script>\r\n<\/body>\r\n<\/html>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u062d\u0627\u0633\u0628\u0629 \u0641\u0642\u062f\u0627\u0646 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER - hobertek.com \u062d\u0627\u0633\u0628\u0629 \u0641\u0642\u062f\u0627\u0646 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER \u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u2022 \u0645\u0635\u0646\u0639 \u0645\u0646\u0630 15 \u0639\u0627\u0645\u064b\u0627 \u2022 hobertek.com \u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0645\u062a\u0631 \u0645\u0643\u0639\u0628\/\u0633\u0627\u0639\u0629 \u0645\u0627\u062f\u0629 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","om_disable_all_campaigns":false,"_joinchat":[],"footnotes":""},"class_list":["post-7073","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/comments?post=7073"}],"version-history":[{"count":1,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073\/revisions"}],"predecessor-version":[{"id":7074,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073\/revisions\/7074"}],"wp:attachment":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/media?parent=7073"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

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\n\t\t\t\r\n\r\n\r\n \r\n \r\n HOBER Pipeline Head Loss Calculator - hobertek.com<\/title>\r\n <link href=\"https:\/\/fonts.googleapis.com\/css2?family=Inter:wght@400;500;600;700&display=swap\" rel=\"stylesheet\">\r\n <style>\r\n :root {\r\n --primary: #002080;\r\n --accent: #2680ff;\r\n --bg: #f8f9fc;\r\n --text: #333;\r\n --border: #dde2f2;\r\n }\r\n * {box-sizing:border-box;}\r\n body {\r\n margin:0;\r\n font-family:'Inter',sans-serif;\r\n background:#ffffff;\r\n color:var(--text);\r\n }\r\n .calculator-wrapper {\r\n max-width:460px;\r\n margin:30px auto;\r\n border-radius:16px;\r\n overflow:hidden;\r\n box-shadow:0 15px 40px rgba(0,0,0,0.12);\r\n background:#fff;\r\n border:1px solid var(--border);\r\n }\r\n .header-bar {\r\n background:var(--primary);\r\n color:#fff;\r\n padding:18px 20px;\r\n font-size:18px;\r\n font-weight:700;\r\n text-align:center;\r\n }\r\n .hober-brand {\r\n font-size:14px;\r\n margin-top:8px;\r\n opacity:0.9;\r\n }\r\n .form-row {\r\n display:grid;\r\n grid-template-columns:1.3fr 1fr 0.7fr;\r\n align-items:center;\r\n padding:14px 16px;\r\n border-bottom:1px solid var(--border);\r\n }\r\n .form-row:nth-child(even){background:#f8f9fc;}\r\n .label {font-weight:600;font-size:14.5px;}\r\n .control input, .control select {\r\n width:100%;\r\n padding:10px 12px;\r\n border-radius:10px;\r\n border:none;\r\n background:var(--primary);\r\n color:#fff;\r\n font-size:15px;\r\n text-align:center;\r\n }\r\n .control input::placeholder {color:#a0c0ff;}\r\n .unit {font-size:13.5px;color:#555;padding-left:8px;}\r\n .section-title {\r\n background:#002080;\r\n color:#fff;\r\n font-weight:600;\r\n padding:12px 16px;\r\n font-size:15px;\r\n }\r\n .fitting-row {\r\n display:grid;\r\n grid-template-columns:1.4fr 1fr;\r\n padding:12px 16px;\r\n border-bottom:1px solid var(--border);\r\n align-items:center;\r\n }\r\n .fitting-row:nth-child(even){background:#f8f9fc;}\r\n .counter {\r\n display:grid;\r\n grid-template-columns:1fr 1.5fr 1fr;\r\n border-radius:10px;\r\n overflow:hidden;\r\n border:1px solid #c0c8e0;\r\n height:44px;\r\n }\r\n .counter button {\r\n background:#fff;\r\n border:none;\r\n font-size:20px;\r\n cursor:pointer;\r\n font-weight:bold;\r\n color:var(--primary);\r\n }\r\n .counter button:hover {background:#eef2ff;}\r\n .counter-value {\r\n background:var(--primary);\r\n color:#fff;\r\n font-weight:600;\r\n display:flex;\r\n align-items:center;\r\n justify-content:center;\r\n font-size:16px;\r\n }\r\n .btn-calc {\r\n width:100%;\r\n padding:16px;\r\n border:none;\r\n background:var(--accent);\r\n color:#fff;\r\n font-size:17px;\r\n font-weight:600;\r\n cursor:pointer;\r\n }\r\n .btn-calc:hover {background:#1765d2;}\r\n .readonly {\r\n background:var(--primary);\r\n color:#fff;\r\n font-weight:600;\r\n }\r\n .result-section {\r\n background:#002080;\r\n color:#fff;\r\n padding:16px;\r\n font-size:16px;\r\n text-align:center;\r\n }\r\n .contact-bar {\r\n background:#001050;\r\n color:#fff;\r\n text-align:center;\r\n padding:20px;\r\n font-size:14px;\r\n }\r\n .contact-bar a {color:#fff;text-decoration:underline;}\r\n <\/style>\r\n<\/style>\r\n<\/head>\r\n<body>\r\n\r\n<div class=\"calculator-wrapper\">\r\n <div class=\"header-bar\">\r\n \u062d\u0627\u0633\u0628\u0629 \u062e\u0633\u0627\u0631\u0629 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER\r\n <div class=\"hober-brand\">\u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u2022 \u0645\u0635\u0646\u0639 \u0645\u0646\u0630 15 \u0639\u0627\u0645\u064b\u0627 \u2022 hobertek.com<\/div>\r\n <\/div>\r\n\r\n \r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0633\u0627\u0626\u0644<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"fluidName\" value=\"Clean Water\"><\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"flowRate\" value=\"60\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0645\u062a\u0631 \u0645\u0643\u0639\u0628\/\u0633\u0627\u0639\u0629<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0645\u0627\u062f\u0629 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628<\/div>\r\n <div class=\"control\">\r\n <select id=\"pipeMaterial\">\r\n <option value=\"cast_iron\">\u0623\u0646\u0628\u0648\u0628 \u062d\u062f\u064a\u062f \u0632\u0647\u0631 \u062c\u062f\u064a\u062f<\/option>\r\n <option value=\"steel\" selected>\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a<\/option>\r\n <option value=\"pe\">\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646\/\u0627\u0644\u0628\u0648\u0644\u064a \u0625\u064a\u062b\u064a\u0644\u064a\u0646 \u0639\u0627\u0644\u064a \u0627\u0644\u0643\u062b\u0627\u0641\u0629<\/option>\r\n <option value=\"pvc\">\u0623\u0646\u0628\u0648\u0628 PVC\/UPVC<\/option>\r\n <\/select>\r\n <\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0642\u0637\u0631 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"diameter\" placeholder=\"\u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644 110\" value=\"110\"><\/div>\r\n <div class=\"unit\">\u0645\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0625\u062c\u0645\u0627\u0644\u064a \u0637\u0648\u0644 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"length\" placeholder=\"\u0645\u062b\u0644\u0627 300\" value=\"300\"><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u0644\u0632\u0648\u062c\u0629<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"viscosity\" value=\"1\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0633\u064a \u0628\u064a \u0625\u0633<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u062b\u0642\u0644 \u0627\u0644\u0646\u0648\u0639\u064a<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"specificGravity\" value=\"1\" step=\"0.01\"><\/div>\r\n <div class=\"unit\"><\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0631\u0623\u0633 \u062b\u0627\u0628\u062a (\u0627\u062e\u062a\u064a\u0627\u0631\u064a)<\/div>\r\n <div class=\"control\"><input type=\"number\" id=\"staticHead\" value=\"80\" step=\"0.1\"><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n\r\n \r\n <div class=\"section-title\">\u0643\u0645\u064a\u0629 \u0627\u0644\u062a\u0631\u0643\u064a\u0628\u0627\u062a (+\/\u2212)<\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0643\u0648\u0639 90 \u062f\u0631\u062c\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('elbow90',-1)\">-<\/button><div class=\"counter-value\" id=\"elbow90\">2<\/div><button onclick=\"c('elbow90',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">45 \u062f\u0631\u062c\u0629 \u0627\u0644\u0643\u0648\u0639<\/div>\r\n <div class=\"counter\"><button onclick=\"c('elbow45',-1)\">-<\/button><div class=\"counter-value\" id=\"elbow45\">0<\/div><button onclick=\"c('elbow45',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u062a\u064a - \u062a\u062f\u0641\u0642 \u0627\u0644\u0641\u0631\u0639<\/div>\r\n <div class=\"counter\"><button onclick=\"c('teeBranch',-1)\">-<\/button><div class=\"counter-value\" id=\"teeBranch\">1<\/div><button onclick=\"c('teeBranch',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u062a\u064a - \u0627\u0644\u062c\u0631\u064a \u0627\u0644\u0645\u0633\u062a\u0642\u064a\u0645<\/div>\r\n <div class=\"counter\"><button onclick=\"c('teeRun',-1)\">-<\/button><div class=\"counter-value\" id=\"teeRun\">0<\/div><button onclick=\"c('teeRun',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0643\u0631\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('ballValve',-1)\">-<\/button><div class=\"counter-value\" id=\"ballValve\">2<\/div><button onclick=\"c('ballValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0628\u0648\u0627\u0628\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('gateValve',-1)\">-<\/button><div class=\"counter-value\" id=\"gateValve\">1<\/div><button onclick=\"c('gateValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0627\u0644\u0641\u062d\u0635<\/div>\r\n <div class=\"counter\"><button onclick=\"c('checkValve',-1)\">-<\/button><div class=\"counter-value\" id=\"checkValve\">1<\/div><button onclick=\"c('checkValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n <div class=\"fitting-row\">\r\n <div class=\"fitting-label\">\u0635\u0645\u0627\u0645 \u0643\u0631\u0648\u064a\/\u0632\u0627\u0648\u064a\u0629<\/div>\r\n <div class=\"counter\"><button onclick=\"c('angleValve',-1)\">-<\/button><div class=\"counter-value\" id=\"angleValve\">0<\/div><button onclick=\"c('angleValve',1)\">+<\/button><\/div>\r\n <\/div>\r\n\r\n <button class=\"btn-calc\" onclick=\"calculateLoss()\">\u062d\u0633\u0627\u0628 \u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0631\u0623\u0633<\/button>\r\n\r\n \r\n <div class=\"result-section\">\u0646\u062a\u0627\u0626\u062c \u0627\u0644\u062d\u0633\u0627\u0628<\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0633\u0631\u0639\u0629<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"velocity\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0622\u0646\u0633\u0629<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0627\u062d\u062a\u0643\u0627\u0643 (hf)<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headLossF\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0644\u062e\u0633\u0627\u0631\u0629 \u0627\u0644\u0645\u062d\u0644\u064a\u0629 (hj)<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headLossJ\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0631\u0623\u0633 \u062b\u0627\u0628\u062a<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headStaticOut\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0625\u062c\u0645\u0627\u0644\u064a \u0631\u0623\u0633 \u0627\u0644\u062f\u064a\u0646\u0627\u0645\u064a\u0643\u064a\u0629<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"headTotal\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u0645<\/div>\r\n <\/div>\r\n <div class=\"form-row\">\r\n <div class=\"label\">\u0627\u0646\u062e\u0641\u0627\u0636 \u0627\u0644\u0636\u063a\u0637<\/div>\r\n <div class=\"control\"><input type=\"text\" id=\"pressureDrop\" class=\"readonly\" readonly><\/div>\r\n <div class=\"unit\">\u062d\u0627\u062c\u0650\u0632<\/div>\r\n <\/div>\r\n\r\n <div class=\"contact-bar\">\r\n \u0647\u0630\u0647 \u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u0645\u0646 HOBER \u00ae<br>\r\n \u0647\u0644 \u062a\u062d\u062a\u0627\u062c \u0625\u0644\u0649 \u062a\u0635\u0645\u064a\u0645 \u062f\u0642\u064a\u0642 \u0644\u0646\u0638\u0627\u0645 \u0645\u0636\u062e\u0629 \u0627\u0644\u0637\u0627\u0642\u0629 \u0627\u0644\u0634\u0645\u0633\u064a\u0629 \u0628\u0646\u0627\u0621\u064b \u0639\u0644\u0649 \u0647\u0630\u0647 \u0627\u0644\u0646\u062a\u0627\u0626\u062c\u061f<br>\r\n \u0627\u062a\u0635\u0644 \u0628\u0641\u0631\u064a\u0642 Hober \u0644\u0644\u062d\u0635\u0648\u0644 \u0639\u0644\u0649 \u0639\u0631\u0636 \u0623\u0633\u0639\u0627\u0631 \u0645\u062c\u0627\u0646\u064a \u2192 <a href=\"mailto:sales@hobertek.com\">sales@hobertek.com<\/a>\r\n <\/div>\r\n<\/div>\r\n\r\n<script>\r\n function c(id, delta){\r\n const el = document.getElementById(id);\r\n let v = parseInt(el.textContent, 10);\r\n v += delta;\r\n if (v < 0) v = 0;\r\n el.textContent = v;\r\n }\r\n function calculateLoss(){\r\n const Q_m3hr = parseFloat(document.getElementById('flowRate').value) || 0;\r\n const D_mm = parseFloat(document.getElementById('diameter').value) || 0;\r\n const L_m = parseFloat(document.getElementById('length').value) || 0;\r\n const mu_cps = parseFloat(document.getElementById('viscosity').value) || 1;\r\n const sg = parseFloat(document.getElementById('specificGravity').value) || 1;\r\n const Hs = parseFloat(document.getElementById('staticHead').value) || 0;\r\n\r\n if (Q_m3hr <= 0 || D_mm <= 0 || L_m <= 0){\r\n alert('Please enter at least: Flow rate, pipe diameter and total length.');\r\n return;\r\n }\r\n\r\n const Q_m3s = Q_m3hr \/ 3600;\r\n const D_m = D_mm \/ 1000;\r\n const rho = sg * 1000;\r\n const mu = mu_cps * 0.001;\r\n const g = 9.81;\r\n\r\n const area = Math.PI * D_m * D_m \/ 4;\r\n const v = Q_m3s \/ area;\r\n\r\n const Re = rho * v * D_m \/ mu;\r\n\r\n \/\/ Roughness \u03b5 (m)\r\n const pipeMaterial = document.getElementById('pipeMaterial').value;\r\n let epsilon = 0.00015; \/\/ default steel\r\n if (pipeMaterial === 'cast_iron') epsilon = 0.00026;\r\n if (pipeMaterial === 'pe' || pipeMaterial === 'pvc') epsilon = 0.0000015;\r\n\r\n \/\/ Friction factor f (Swamee-Jain)\r\n let f;\r\n if (Re < 2300){\r\n f = 64 \/ Re;\r\n }else{\r\n const term = (epsilon\/(3.7*D_m)) + (5.74\/Math.pow(Re,0.9));\r\n f = 0.25 \/ Math.pow(Math.log10(term), 2);\r\n }\r\n\r\n const hf = f * (L_m \/ D_m) * (v*v\/(2*g));\r\n\r\n \/\/ Local losses K\r\n const K = {\r\n elbow90: 0.9,\r\n elbow45: 0.4,\r\n teeBranch: 1.0,\r\n teeRun: 0.6,\r\n ballValve: 0.05,\r\n gateValve: 0.2,\r\n checkValve: 2.0,\r\n angleValve: 5.0\r\n };\r\n\r\n const K_total = \r\n K.elbow90 * parseInt(document.getElementById('elbow90').textContent) +\r\n K.elbow45 * parseInt(document.getElementById('elbow45').textContent) +\r\n K.teeBranch * parseInt(document.getElementById('teeBranch').textContent) +\r\n K.teeRun * parseInt(document.getElementById('teeRun').textContent) +\r\n K.ballValve * parseInt(document.getElementById('ballValve').textContent) +\r\n K.gateValve * parseInt(document.getElementById('gateValve').textContent) +\r\n K.checkValve * parseInt(document.getElementById('checkValve').textContent) +\r\n K.angleValve * parseInt(document.getElementById('angleValve').textContent);\r\n\r\n const hj = K_total * v*v \/ (2*g);\r\n\r\n const H_tot = Hs + hf + hj;\r\n const deltaP_bar = (rho * g * (hf + hj)) \/ 1e5;\r\n\r\n document.getElementById('velocity').value = v.toFixed(2);\r\n document.getElementById('headLossF').value = hf.toFixed(2);\r\n document.getElementById('headLossJ').value = hj.toFixed(2);\r\n document.getElementById('headStaticOut').value = Hs.toFixed(2);\r\n document.getElementById('headTotal').value = H_tot.toFixed(2);\r\n document.getElementById('pressureDrop').value = deltaP_bar.toFixed(3);\r\n }\r\n<\/script>\r\n<\/body>\r\n<\/html>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u062d\u0627\u0633\u0628\u0629 \u0641\u0642\u062f\u0627\u0646 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER - hobertek.com \u062d\u0627\u0633\u0628\u0629 \u0641\u0642\u062f\u0627\u0646 \u0631\u0623\u0633 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 HOBER \u0623\u062f\u0627\u0629 \u0627\u062d\u062a\u0631\u0627\u0641\u064a\u0629 \u2022 \u0645\u0635\u0646\u0639 \u0645\u0646\u0630 15 \u0639\u0627\u0645\u064b\u0627 \u2022 hobertek.com \u0645\u0639\u062f\u0644 \u062a\u062f\u0641\u0642 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0645\u062a\u0631 \u0645\u0643\u0639\u0628\/\u0633\u0627\u0639\u0629 \u0645\u0627\u062f\u0629 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","om_disable_all_campaigns":false,"_joinchat":[],"footnotes":""},"class_list":["post-7073","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/comments?post=7073"}],"version-history":[{"count":1,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073\/revisions"}],"predecessor-version":[{"id":7074,"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/pages\/7073\/revisions\/7074"}],"wp:attachment":[{"href":"https:\/\/hobertek.com\/ar\/wp-json\/wp\/v2\/media?parent=7073"}],"curies":[{"name":"\u0648\u0648\u0631\u062f\u0628\u0631\u064a\u0633","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}