{"product_id":"sandpiper-hdf4-4-100mm-heavy-duty-flap-valve-aodd-pump","title":"SANDPIPER HDF4 4\" (100mm) Heavy-Duty Flap Valve AODD Pump","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #1f2937; line-height: 1.6;\"\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: 2fr 1fr; gap: 30px; align-items: start;\"\u003e\n\u003cdiv\u003e\n\u003ch2 style=\"color: #263879; margin-bottom: 12px;\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe SANDPIPER HDF4 4\" (100mm) Heavy-Duty Flap Valve AODD Pump is designed for tough solids-handling applications where abrasive slurries, suspended solids, non-suspended solids, and large line-size solids must be transferred reliably. Built for demanding sump applications, mine dewatering, wastewater handling, and industrial liquid transfer, this air operated double diaphragm pump provides dependable performance in harsh environments involving heavy solids and abrasive fluids.\u003c\/p\u003e\n\u003cp\u003eThe HDF4 uses a heavy-duty flap valve design that provides a large internal flow area, allowing solids up to nearly 3\" (75 mm) to pass through the pump. Its bottom discharge porting helps prevent settling solids from remaining inside the pumping chamber, reducing premature wear and improving pump life in slurry and solids-heavy applications.\u003c\/p\u003e\n\u003cp\u003eConstructed with thick wall sand-casted metallic materials, including aluminum, cast iron, and stainless steel options, the HDF4 is engineered for long-term durability. The pump also features a no-lube, no-stall air distribution valve and delivers a maximum flow rate of up to 310 GPM (1173 LPM), depending on material configuration.\u003c\/p\u003e\n\u003ch3 style=\"color: #263879; margin-top: 28px;\"\u003eKey Benefits\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli\u003eHandles abrasive slurries and large solids\u003c\/li\u003e\n\u003cli\u003eLarge flap valve flow path for line-size solids\u003c\/li\u003e\n\u003cli\u003eBottom discharge design helps prevent solids settling\u003c\/li\u003e\n\u003cli\u003eSuperior suction lift up to 24 ft in water\u003c\/li\u003e\n\u003cli\u003eNo-lube, no-stall air distribution valve\u003c\/li\u003e\n\u003cli\u003eHeavy-duty metallic construction for harsh industrial use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f7f9fc; padding: 24px; border-radius: 14px;\"\u003e\n\u003ch3 style=\"color: #263879; margin-top: 0;\"\u003eIdeal For\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px; margin-bottom: 0;\"\u003e\n\u003cli\u003eMine Dewatering\u003c\/li\u003e\n\u003cli\u003eSump Applications\u003c\/li\u003e\n\u003cli\u003eAbrasive Slurry Transfer\u003c\/li\u003e\n\u003cli\u003eWastewater Solids Handling\u003c\/li\u003e\n\u003cli\u003eIndustrial Solids Transfer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 35px;\"\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 14px; padding: 22px; text-align: center;\"\u003e\n\u003ch4 style=\"color: #263879;\"\u003eLarge Solids Handling\u003c\/h4\u003e\n\u003cp\u003eFlap valve design allows solids up to nearly 3\" to pass through the pump.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 14px; padding: 22px; text-align: center;\"\u003e\n\u003ch4 style=\"color: #263879;\"\u003eHeavy-Duty Transfer\u003c\/h4\u003e\n\u003cp\u003eBuilt for abrasive slurries, suspended solids, and tough dewatering applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 14px; padding: 22px; text-align: center;\"\u003e\n\u003ch4 style=\"color: #263879;\"\u003eSuperior Suction Lift\u003c\/h4\u003e\n\u003cp\u003eFlap valve design provides suction lift capabilities up to 24 ft in water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #e5e7eb; border-radius: 14px; padding: 22px; text-align: center;\"\u003e\n\u003ch4 style=\"color: #263879;\"\u003eDurable Construction\u003c\/h4\u003e\n\u003cp\u003eThick wall metallic construction supports long-term industrial reliability.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color: #263879; margin-top: 40px;\"\u003eCommon Industrial Applications\u003c\/h3\u003e\n\u003cul style=\"padding-left: 20px;\"\u003e\n\u003cli\u003eMine dewatering\u003c\/li\u003e\n\u003cli\u003eSump pumping applications\u003c\/li\u003e\n\u003cli\u003eAbrasive slurry transfer\u003c\/li\u003e\n\u003cli\u003eWastewater solids handling\u003c\/li\u003e\n\u003cli\u003eSuspended and non-suspended solids transfer\u003c\/li\u003e\n\u003cli\u003eIndustrial sludge transfer\u003c\/li\u003e\n\u003cli\u003eConstruction site dewatering\u003c\/li\u003e\n\u003cli\u003eHeavy-duty process fluid transfer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color: #263879; margin-top: 40px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-top: 15px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003ePump Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eSandpiper HDF4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003ePump Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eAir Operated Double Diaphragm (AODD) Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eValve Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eFlap Valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003ePort Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e4\" 150# ANSI Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eAvailable Materials\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eAluminum \/ Cast Iron \/ Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eMaximum Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eUp to 310 GPM (1173 LPM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eMaximum Operating Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e125 PSI (8.6 Bar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eSolids Handling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eUp to nearly 3\" (75 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eHeads\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eUp to 289 ft of water (88 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eAir Distribution Valve\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eNo-Lube, No-Stall Design\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f9fc;\"\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003e\u003cstrong\u003eSuction Lift\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 12px; border: 1px solid #e5e7eb;\"\u003eUp to 24 ft in water\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"color: #263879; margin-top: 40px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat is the SANDPIPER HDF4 used for?\u003c\/h4\u003e\n\u003cp\u003eThe HDF4 is used for heavy-duty slurry, solids-handling, sump pumping, mine dewatering, wastewater, and industrial transfer applications involving abrasive fluids and large solids.\u003c\/p\u003e\n\u003ch4\u003eWhy choose a flap valve AODD pump instead of a ball valve pump?\u003c\/h4\u003e\n\u003cp\u003eA flap valve pump provides a larger flow area, allowing larger solids to pass through the pump more easily. The bottom discharge design also helps prevent settling solids from staying inside the pumping chamber.\u003c\/p\u003e\n\u003ch4\u003eWhat size solids can the HDF4 handle?\u003c\/h4\u003e\n\u003cp\u003eThe SANDPIPER HDF4 can handle solids up to nearly 3\" (75 mm), making it suitable for heavy solids and slurry transfer applications.\u003c\/p\u003e\n\u003c!-- Material Options Section --\u003e\n\u003cdiv style=\"margin-top: 40px;\"\u003e\n\u003ch3 style=\"color: #263879; margin-bottom: 24px; text-align: center;\"\u003eAlso Available in Other Materials: \u003c\/h3\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(240px,1fr)); gap: 20px;\"\u003e\n\u003ca href=\"https:\/\/store.abset.com\/products\/sandpiper-hdf4-4-inch-aluminum-heavy-duty-flap-valve-aodd-pump\" style=\"text-decoration: none; border: 1px solid #e5e7eb; border-radius: 18px; padding: 28px 24px; display: block; color: #1f2937; background: #ffffff; text-align: center;\"\u003e\n\u003cdiv style=\"margin-bottom: 18px; display: flex; justify-content: center;\"\u003e\u003csvg width=\"52\" height=\"52\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#263879\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\n\u003cpath d=\"M12 2L19 21H5L12 2Z\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4 style=\"margin-top: 0; margin-bottom: 12px; color: #263879; font-size: 20px;\"\u003eAluminum\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.7; font-size: 15px; margin-bottom: 20px;\"\u003eLightweight metallic option for heavy-duty slurry, sump, and solids-handling applications.\u003c\/p\u003e\n\u003cspan style=\"display: inline-block; background: #263879; color: #ffffff; padding: 10px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;\"\u003e Explore More \u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"https:\/\/store.abset.com\/products\/sandpiper-hdf4-4-inch-cast-iron-heavy-duty-flap-valve-aodd-pump\" style=\"text-decoration: none; border: 1px solid #e5e7eb; border-radius: 18px; padding: 28px 24px; display: block; color: #1f2937; background: #ffffff; text-align: center;\"\u003e\n\u003cdiv style=\"margin-bottom: 18px; display: flex; justify-content: center;\"\u003e\u003csvg width=\"52\" height=\"52\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#263879\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\n\u003cpath d=\"M4 12H20\"\u003e\u003c\/path\u003e\n\u003cpath d=\"M12 4V20\"\u003e\u003c\/path\u003e\n\u003ccircle cx=\"12\" cy=\"12\" r=\"8\"\u003e\u003c\/circle\u003e\n\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4 style=\"margin-top: 0; margin-bottom: 12px; color: #263879; font-size: 20px;\"\u003eCast Iron\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.7; font-size: 15px; margin-bottom: 20px;\"\u003eHeavy-duty construction for abrasive slurry, sludge, dewatering, and harsh industrial applications.\u003c\/p\u003e\n\u003cspan style=\"display: inline-block; background: #263879; color: #ffffff; padding: 10px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;\"\u003e Explore More \u003c\/span\u003e\u003c\/a\u003e\n\u003ca href=\"https:\/\/store.abset.com\/products\/sandpiper-hdf4-4-inch-stainless-steel-heavy-duty-flap-valve-aodd-pump\" style=\"text-decoration: none; border: 1px solid #e5e7eb; border-radius: 18px; padding: 28px 24px; display: block; color: #1f2937; background: #ffffff; text-align: center;\"\u003e\n\u003cdiv style=\"margin-bottom: 18px; display: flex; justify-content: center;\"\u003e\u003csvg width=\"52\" height=\"52\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#263879\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\n\u003cpath d=\"M12 2L4 7V12C4 17 7.5 21 12 22C16.5 21 20 17 20 12V7L12 2Z\"\u003e\u003c\/path\u003e\n\u003c\/svg\u003e\u003c\/div\u003e\n\u003ch4 style=\"margin-top: 0; margin-bottom: 12px; color: #263879; font-size: 20px;\"\u003eStainless Steel\u003c\/h4\u003e\n\u003cp style=\"line-height: 1.7; font-size: 15px; margin-bottom: 20px;\"\u003eCorrosion-resistant metallic option for demanding solids-handling and industrial fluid transfer.\u003c\/p\u003e\n\u003cspan style=\"display: inline-block; background: #263879; color: #ffffff; padding: 10px 18px; border-radius: 999px; font-size: 14px; font-weight: 600;\"\u003e Explore More \u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- CTA Banner --\u003e\n\u003cdiv style=\"margin: 40px 0; padding: 32px 36px; background: linear-gradient(135deg,#263879 0%,#1f2f6d 100%); border-radius: 18px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; color: #ffffff;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 260px;\"\u003e\n\u003ch2 style=\"margin: 0 0 12px; color: #ffffff; font-size: 28px; line-height: 1.2;\"\u003eNeed Help Selecting a Heavy-Duty Solids Handling Pump?\u003c\/h2\u003e\n\u003cp style=\"margin: 0; font-size: 16px; line-height: 1.7; color: rgba(255,255,255,0.92); max-width: 760px;\"\u003eOur engineering team can help you select the correct SANDPIPER HDF4 pump material, diaphragm option, and configuration based on your slurry, solids size, flow requirement, and operating conditions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"\/pages\/contact-us\" style=\"display: inline-block; background: #ffffff; color: #263879; padding: 14px 26px; border-radius: 999px; text-decoration: none; font-weight: bold; font-size: 15px;\"\u003e Contact Our Team \u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SANDPIPER","offers":[{"title":"Default Title","offer_id":52420278124725,"sku":null,"price":0.0,"currency_code":"MYR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/6168\/7989\/files\/Heavy_Duty_Ball_Valve_7.png?v=1779931812","url":"https:\/\/store.abset.com\/products\/sandpiper-hdf4-4-100mm-heavy-duty-flap-valve-aodd-pump","provider":"ABS Engineering \u0026 Trading Sdn Bhd","version":"1.0","type":"link"}