{"product_id":"sandpiper-hdf4-4-heavy-duty-flap-valve-aodd-pump-diaphragm-for-metallic-pumps","title":"Sandpiper HDF4 4\" Heavy Duty Flap Valve AODD Pump Diaphragm for Metallic Pumps","description":"\u003cdiv class=\"sp-diaphragm-desc\"\u003e\n\n\u003cstyle\u003e\n.sp-diaphragm-desc{\n  --sp-blue:#1e3a8a;--sp-blue-light:#eef2ff;--sp-blue-soft:#f7f9ff;\n  --sp-text:#2b2f38;--sp-muted:#626977;--sp-border:#e1e5ec;--sp-white:#ffffff;\n  max-width:1100px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;\n  color:var(--sp-text);line-height:1.65;\n}\n.sp-diaphragm-desc *{box-sizing:border-box;}\n.sp-diaphragm-desc h2{color:var(--sp-blue);font-size:25px;line-height:1.3;margin:36px 0 12px;}\n.sp-diaphragm-desc h3{color:var(--sp-blue);font-size:20px;margin:30px 0 14px;}\n.sp-diaphragm-desc p{font-size:15px;margin:0 0 15px;}\n.sp-diaphragm-desc ul{padding-left:21px;font-size:15px;}\n.sp-diaphragm-desc li{margin-bottom:8px;}\n.sp-atomic-answer{font-size:16px!important;color:var(--sp-text);background:var(--sp-blue-soft);border-left:4px solid var(--sp-blue);padding:18px 20px;border-radius:0 8px 8px 0;margin:0 0 25px!important;}\n.sp-spec-box{background:#fff;border:1px solid var(--sp-border);border-radius:10px;padding:20px 24px;margin:15px 0 30px;}\n.sp-table-wrap{overflow-x:auto;border:1px solid var(--sp-border);border-radius:10px;margin:18px 0 30px;}\n.sp-spec-table{width:100%;border-collapse:collapse;min-width:700px;font-size:14px;}\n.sp-spec-table th{background:var(--sp-blue);color:#fff;text-align:left;padding:12px 14px;}\n.sp-spec-table td{padding:13px 14px;border-bottom:1px solid var(--sp-border);vertical-align:top;}\n.sp-spec-table tr:nth-child(even) td{background:#f8f9fc;}\n.sp-app-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:15px;margin:18px 0 30px;}\n.sp-app-card{border:1px solid var(--sp-border);border-radius:10px;padding:18px;background:#fff;}\n.sp-app-card strong{display:block;color:var(--sp-blue);margin-bottom:6px;}\n.sp-app-card p{font-size:14px;color:var(--sp-muted);margin:0;}\n.sp-note{background:var(--sp-blue-soft);border-left:4px solid var(--sp-blue);padding:16px 18px;border-radius:0 8px 8px 0;font-size:14px;margin:20px 0 30px;}\n.sp-help-banner{background:var(--sp-blue);color:#fff;border-radius:12px;padding:27px 30px;margin-top:35px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;}\n.sp-help-banner h3{color:#fff;margin:0 0 7px;font-size:20px;}\n.sp-help-banner p{color:#e4e9f8;margin:0;max-width:650px;font-size:14px;}\n.sp-cta-links{display:flex;gap:10px;flex-wrap:wrap;}\n.sp-cta-links a{background:#fff;color:var(--sp-blue);text-decoration:none;font-size:14px;font-weight:700;padding:11px 20px;border-radius:25px;}\n@media(max-width:760px){.sp-diaphragm-desc h2{font-size:22px;}.sp-cta-links{width:100%;}.sp-cta-links a{width:100%;text-align:center;}}\n\u003c\/style\u003e\n\n\u003ch2\u003eSandpiper HDF4 Diaphragm Product Overview\u003c\/h2\u003e\n\n\u003cp class=\"sp-atomic-answer\"\u003e\n  The Sandpiper HDF4 diaphragm is a genuine replacement wear\n  component for 4-inch Heavy Duty Flap Valve AODD pumps. Buyers\n  should identify the pump's aluminium, cast-iron or stainless-steel\n  wetted construction before selecting the required diaphragm\n  material and manufacturer part number.\n\u003c\/p\u003e\n\n\u003cp\u003e\n  Correct \u003cstrong\u003eSandpiper HDF4 diaphragm\u003c\/strong\u003e selection is\n  construction-specific. A diaphragm with the same material name\n  may use a different manufacturer part number on a cast-iron\n  pump compared with aluminium or stainless-steel versions.\n\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications \u0026amp; Compatibility\u003c\/h3\u003e\n\n\u003cdiv class=\"sp-spec-box\"\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sandpiper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Pump Model:\u003c\/strong\u003e HDF4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Type:\u003c\/strong\u003e Heavy Duty Flap Valve AODD Pump\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNominal Pump Size:\u003c\/strong\u003e 4\" \/ 100 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePump Wetted Constructions:\u003c\/strong\u003e Aluminium, Cast Iron and Stainless Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAluminium \/ Stainless Steel Diaphragm Materials:\u003c\/strong\u003e Santoprene, Urethane, Nitrile and Neoprene\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCast Iron Diaphragm Materials:\u003c\/strong\u003e Santoprene, Nitrile and Neoprene\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number Families:\u003c\/strong\u003e 286.018 and 286.098\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation Dimensions:\u003c\/strong\u003e Verify against the applicable construction-specific Sandpiper data sheet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eHDF4 Diaphragm Construction \u0026amp; Part Number Comparison\u003c\/h3\u003e\n\n\u003cdiv class=\"sp-table-wrap\"\u003e\n\u003ctable class=\"sp-spec-table\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n  \u003cth\u003ePump Wetted Construction\u003c\/th\u003e\n  \u003cth\u003eCurrent Design Level\u003c\/th\u003e\n  \u003cth\u003eDiaphragm Material\u003c\/th\u003e\n  \u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eSantoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.354\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eUrethane\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.357\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eNitrile\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.360\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAluminium\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eNeoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.365\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eCast Iron\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eSantoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.098.354\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast Iron\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eNitrile\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.098.360\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCast Iron\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eNeoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.098.365\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eSantoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.354\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eUrethane\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.357\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eNitrile\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.360\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eNeoprene\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e286.018.365\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"sp-note\"\u003e\n  \u003cstrong\u003eImportant:\u003c\/strong\u003e\n  Confirm the complete HDF4 model, pump wetted construction,\n  design level and existing diaphragm part number. Construction-specific\n  dimensional and flange information should be checked against the\n  applicable manufacturer data sheet.\n\u003c\/div\u003e\n\n\u003ch2\u003eCommon Industrial Applications \u0026amp; Use Cases\u003c\/h2\u003e\n\n\u003cp\u003e\n  Sandpiper HDF4 Heavy Duty Flap Valve pumps are used for\n  challenging solids-handling services where wet-end components\n  may require planned inspection and replacement.\n\u003c\/p\u003e\n\n\u003cdiv class=\"sp-app-grid\"\u003e\n\n  \u003cdiv class=\"sp-app-card\"\u003e\n    \u003cstrong\u003eMine Dewatering\u003c\/strong\u003e\n    \u003cp\u003eReplacement diaphragm support for large Heavy Duty Flap pumps used in dewatering service.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sp-app-card\"\u003e\n    \u003cstrong\u003eIndustrial Sumps\u003c\/strong\u003e\n    \u003cp\u003eMaintenance of HDF4 pumps handling solids-containing sump liquids.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sp-app-card\"\u003e\n    \u003cstrong\u003eAbrasive Slurries\u003c\/strong\u003e\n    \u003cp\u003eWet-end replacement requirements in abrasive and slurry-transfer duties.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sp-app-card\"\u003e\n    \u003cstrong\u003eLarge Solids Handling\u003c\/strong\u003e\n    \u003cp\u003eMaintenance applications where the HDF4 flap-valve design is used for solids-containing fluids.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sp-note\"\u003e\n  \u003cstrong\u003eNeed dimensional information?\u003c\/strong\u003e\n  Because HDF4 construction-specific manuals contain different\n  dimensional details, verify the exact construction before using\n  dimensions for installation or replacement planning.\n\u003c\/div\u003e\n\n\u003cdiv class=\"sp-help-banner\"\u003e\n  \u003cdiv\u003e\n    \u003ch3\u003eNeed Help Identifying Your HDF4 Diaphragm?\u003c\/h3\u003e\n    \u003cp\u003e\n      Provide your pump model, construction, design level, current\n      part number and process details. ABS Engineering can assist\n      with genuine Sandpiper part selection and the current\n      construction-specific specification sheet.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"sp-cta-links\"\u003e\n    \u003ca href=\"\/id\/pages\/contact\"\u003eRequest a Quote\u003c\/a\u003e\n    \u003ca href=\"\/id\/pages\/contact\"\u003eRequest Spec Sheet\u003c\/a\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"SANDPIPER","offers":[{"title":"Santoprene \/ Aluminium\/Stainless Steel","offer_id":52984880627893,"sku":"286.018.354","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Santoprene \/ Cast Iron","offer_id":52984880660661,"sku":"286.098.354","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Urethane \/ Aluminium\/Stainless Steel","offer_id":52984880693429,"sku":"286.018.357","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Nitrile\/Buna \/ Aluminium\/Stainless Steel","offer_id":52984880726197,"sku":"286.018.360","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Nitrile\/Buna \/ Cast Iron","offer_id":52984880758965,"sku":"286.098.360","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Neoprene \/ Aluminium\/Stainless Steel","offer_id":52984880791733,"sku":"286.018.365","price":0.0,"currency_code":"MYR","in_stock":false},{"title":"Neoprene \/ Cast Iron","offer_id":52984880824501,"sku":"286.098.365","price":0.0,"currency_code":"MYR","in_stock":false}],"url":"https:\/\/store.abset.com\/id\/products\/sandpiper-hdf4-4-heavy-duty-flap-valve-aodd-pump-diaphragm-for-metallic-pumps","provider":"ABS Engineering \u0026 Trading Sdn Bhd","version":"1.0","type":"link"}