Diaphragm Pumps of 2025
Best Choice1
Clicked 1 times in the last monthGracoGraco 241906 3/4 Double Diaphragm Pump, Air Operated
Main highlights- Use for Oil Transfer, Oil Evacuation, Water, Antifreeze, & Windshield Wash Solution
- Max Air Use at 100 PSI: 28 SCFM
- Free Flow: 16 GPM
- Air Inlet: 1/4" NPT, Fluid Inlet/Outlet: 3/4"
9.8Exceptional
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Value for Money2
emageneAir Operated Double Diaphragm Pump 1 inch Inlet/Outlet Pneumatic Waste Oil Transfer Pump for Chemical QBY4-25 35 GPM Dual Diaphram Polypropylene Teflon by Stainless Steel Iron 115 PSI
Main highlights- 【WIDELY USE】The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, paint, printing, paper making, water treatment, automotive etc.
- 【MAXIMUM HEAD】Air-Operated Double Diaphragm Pump have top quality, a double-acting seal that delivers better performance. 1/2 inch air inlet with NPT fitting uses standard shop air for easy operation.275.59FT/84M, Max Temp : 150 ℉, Max Pressure: 120 PSI.
- 【MAIN FEATURES】: no lubrication, medium and pump moving parts completely separated, conveying chemical waste oil liquid will not leak, low energy consumption, low air consumption, Modular design, low maintenance costs, long service life, good heat resistance.
- 【ADVANTAGES】: no spark, no liquid suction will not damage the pump, flow and head can be adjusted by valve switch size, suction can be adjusted by pressure, can be immersed in the medium work, high viscosity and low viscosity liquids can be extracted.
- [ INDUSTRY QBY4-25AL] material: aluminum body; santoprenediaphragm comes with an Extra Set of Diaphragms material: rubber, type: double diaphragm; operation type: pneumatic; inlet/outlet port size: 1 inch (25 mm) ; inlet port SINPT (8 mm) ; flow rate: 35 gpm; Maximum lift: 275 feet (84 m) ; suction: 23 feet (7 m) . Do not use in corrosive liquids.
9.7Exceptional
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3
PEAYLIAir Operated Double Diaphragm Pump QBY4-25L 1 inch Outlet 35 GPM Pneumatic Transfer Max 120 PSI Industrial Use Chemical Waste Oil Dual Dissepiment Nitrile Fluorine Rubber by Cast Iron Aluminum Alloy
Why we love it
Durable construction for long-lasting performance.
Efficient operation with minimal downtime.
Versatile use across multiple industries.
9.6Exceptional
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4
VEVORVEVOR Air Operated Double Diaphragm Pump, 44GPM, Max 115PSI Air Waste Oil Pneumatic Transfer Pump with 2 Extra Diaphragms, 1-1/2 inch Inlet & Outlet Aluminum Alloy Diaphragm Pump for Diesel Grease Oil
Main highlights- Solid & Leak-Proof Design: Our air-operated double diaphragm pump housing is crafted with aluminum alloy and secured with a full-bolted structure, promising an unwavering bond between components for top-notch sealing. Bid farewell to oil lubrication and fear of dry running, and our pump is designed for enduring performance and rigorous, long-term use. Get ready to experience a pump that's as tough as your demands!
- Premium PTFE Diaphragm: Our air operated diaphragm pump features state-of-the-art dual-layer PTFE diaphragms for exceptional corrosion resistance. These diaphragms excel in the harshest environments, handling corrosive fluids with unparalleled efficiency. Max. Flow Rate: 44 GPM. Max. Pressure: 115 PSI. Max. Head Lift: 226 ft/69 m. Ready to experience the difference? Let's power up your productivity!
- Low Noise Operation: Our air transfer pump comes with an advanced silencer that minimizes noise to the lowest possible level, not only enhances the comfort of your working environment but also significantly reduces vibration and noise impact on the equipment itself, extending its lifespan. The detachable design for effortless maintenance and cleaning reduces your upkeep costs. Enjoy a quieter and more efficient workspace!
- Fit for Multiple Fluids: Our waste oil pump is capable of processing a wide array of fluids from waste oil, alcohol, hydraulic oil, gasoline, diesel, and detergents to beverages. Its extensive applications span industries including petroleum, metallurgy, mining, coatings, printing, water treatment, and automotive. Whatever your industry, whatever your fluid, our diaphragm pump is engineered to handle it with unmatched efficiency and reliability.
- Exceptional Pneumatic Performance: Elevate your fluid handling with our air diaphragm pump! It boasts standard inlet/outlet dimensions of 1.5 inches and an air inlet size of FNPT 1/4 inch, designed to seamlessly integrate with your existing pipelines and fittings, enhancing its pneumatic performance. Embrace the power of professional pneumatic design in your operations today!
9.5Excellent
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5
PEAYLIAir Operated Double Diaphragm Pump QBK-15 1/2 inch Outlet 12 GPM Pneumatic Transfer Max 115 PSI Industrial Use for Chemical Waste Oil Dual Diaphram PTFE Nitrile Rubber by Plastic and Stainless Steel
Main highlights- VARIOUS INDUSTRIES: Diaphragm pump can petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive and other chemical industries
- SAFETY: Air diaphragm pump bolted construction for leak-free fluid handling. ease of use/comfortability
- RELIABILITY: Diaphragm pump unbalanced air valve ensures no-stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
- INDUSTRIAL QBK-15: Material:Cast iron,aluminum alloy,Stainless steel.Inlet Port: 1/2 inch;Outlet Port: 1/2 inch ;Air inlet size: 1/4 inch;Gas Nozzle: 0.32 inch;Max Flow Rate: 2 m3/h (12 GPM);Suction: 16.4 ft (5M);Max Head: 226 ft (69 M);Max PSI: 115 psi
- EXCELLENT EFFICIENCY: Double diaphragm pump motor design delivers optimum air efficiency.Double Diaphragm:PTFE, Nitrile Rubber and Polychloroprene
9.4Excellent
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6
Cozyel10% OffCozyel Air-Operated Diaphragm Pump Double Diaphragm Pump 1-1/2 inch Inlet & Outlet, Air Diaphragm Pump Dual Diaphragm Air Pump Aluminum Alloy 44 GPM Max 115PSI, QBK_40L
Main highlights- Rugged construction - resists corrosion for reliable performance and long life.Bolted construction is designed for leak-free fluid handling.
- Good abrasion resistance and heat resistance.
- Easy access to ball checks and fluid caps for maintenance and repairs.
- Air-Operated Double Diaphragm Pump 12GPM 1-1/2Inch Inlet And Outlet. The diaphragm pump features an externally serviceable air distribution system and all-bolted construction, with convenient operating, are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.
- A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm (check valve, butterfly valves, flap valves, or any other form of shut-off valves) to pump a fluid.
9.2Excellent
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7
CozyelCozyel Air-Operated Diaphragm Pump Double Diaphragm Pump 1 inch Inlet & Outlet, Air Diaphragm Pump Dual Diaphragm Air Pump Aluminum 35 GPM Max 120PSI, QBY4-25L
Main highlights- [VERSATILE USE]--The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc.
- [UNIQUE DESIGN]--Features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time.
- [Quality Performance]--Maximum Head: 275.59FT/84M, Max Temp : 150 ℉, Max Pressure: 120PSI. Top quality glyd ring, a double-acting seal that delivers better performance. 1/2 inch air inlet with NPT fitting uses standard shop air for easy operation.
- [MAIN PARAMETER]--Material: Aluminum; Diaphragm Material: Nitrile; Type: Double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size/Standard 1 inch (25 mm); Air Inlet Size: NPT 1/2 inch (12.7 mm)
- [EXCELLENT CONSTRUCTION]--Rugged construction - resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
9.0Excellent
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8
FVMOTOAir Operated Double Diaphragm Pump 1 inch Inlet/Outlet Pneumatic Waste Oil Transfer Pump for Chemical QBY4-25L 35 GPM Dual Diaphram Polypropylene Nitrile Rubber by Stainless Steel Iron 115 PSI
Main highlights- 【WASTE OIL TRANSFER】Max grain diameter allowed to pass is 4mm.Suits for transfer waste oil and some liquid with particles.Max flow rate:35 GPM.Suction: 23 ft. Head: 246 ft.Max pressure: 115 psi.
- 【STAINLESS STEEL BODY】Air operated diaphragm pump body made of stainless steel, aluminum alloy and cast iron.Air diaphragm pump bolted construction for leak-free fluid handling.
- 【PNEUMATIC DIAPHRAGM PUMP】Air inlet size:1/2 inch.Gas Nozzle:0.32 inch with silencer.Diaphragm pump unbalanced air valve prevents stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance.
- 【DOUBLE DIAPHRAM】Chloroprene rubber and nitrile rubber;polypropylene dual dissepiment.Double diaphragm pump motor design delivers optimum air efficiency.
- 【1 INCH PORT】Double diaphragm pump with 1 inch inlet and 1 inch outlet.Exit pressure is 8 kgf/cm³.
- BEFORE USE【Please check and tighten the screws first before use to avoid water leakage】
8.9Very Good
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9
GCCSJGCCSJ Air Operated Double Diaphragm Pump 1 inch Inlet/Outlet Pneumatic Chemical QBY4-25L 31 GPM Dual Diaphram Polypropylene Nitrile Rubber by Stainless Steel Iron 115 PSI
Main highlights- WASTE OIL TRANSFER: Max grain diameter allowed to pass is 4mm.Suits for transfer waste oil and some liquid with particles.Max flow rate:7 m³/h.Suction: 23 ft. Head: 246 ft.Max pressure: 115 psi
- STAINLESS STEEL BODY : Air operated diaphragm pump body made of stainless steel, aluminum alloy and cast iron.Air diaphragm pump bolted construction for leak-free fluid handling
- PNEUMATIC DIAPHRAGM PUMP: Air inlet size:1/2 inch.Gas Nozzle:0.32 inch with silencer.Diaphragm pump unbalanced air valve prevents stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
- EXCELLENT PERFORMANCE: Double Diaphragm Pump features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time
- CUSTOMER SERVICE: Please note: After receiving the diaphragm pump, please check whether the fasteners are tightened, the transportation process may send loose, please tighten the screws first. After use if you find the pump has leakage or other problems, please be sure to contact us, we will help you to replace or solve. Maintenance: It is recommended that you regularly lubricate the moving pin group with lubricant and do regular maintenance, which can prolong the service life of the pump
- 1 INCH PORT: Double diaphragm pump with 1 inch inlet and 1 inch outlet.Exit pressure is 8 kgf/cm³
8.7Very Good
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10
FAHKNSFAHKNS Air-Operated Double Diaphragm Pump 1 Inch Inlet Outlet Aluminum 35 GPM Max 115 PSI, Industrial Use,Nitrile Diaphragm, QBY4-25L
Main highlights- WIDELY USED: The diaphragm pump is easy to operate and widely used in paper making, water treatment, automobile, coating, paint, printing, petroleum, metallurgy, mining and other industries
- SUPER PNEUMATIC PERFORMANCE: Air-Operated Double Diaphragm Pump have top quality, a double-acting seal that delivers better performance. 1/2 inch air inlet with NPT fitting uses standard shop air for easy operation.275.59FT/84M, Max Temp : 150 ℉, Max Pressure: 115 PSI
- SOLID LEAK -PROOF STRUCTURE: Diaphragm Pump resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling
- PREMIUM DOUBLE DIAPHRAGM: Material:aluminum; Dissepiment Material:Nitrile Bubber,Fluorine Rubber,Chloroprene Rubber; Type: double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size: 1 inch (25mm); Air Inlet Size: NPT 1/2 inch (12.7mm); Flow Rate: 35 GPM
- EXCELLENT PERFORMANCE: Double Diaphragm Pump features an externally serviceable air distribution system and all-bolted construction. Modular air valve is stall-free, this low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes down time
8.6Very Good
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