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Diaphragm pumps are versatile and reliable fluid transfer solutions, essential for a wide range of industrial applications. Selecting the correct diaphragm pump ensures optimal performance, longevity, and safety for your specific operational needs. Understanding key features and specifications will help you make an informed decision.
【INDUSTRIAL QBY4-25L】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...
【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...
【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...
【RUGGED CONSTRUCTION】 Diaphragm Pump resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling.
【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.
Premium Double PTFE Diaphragms: Our air-operated double diaphragm pump adopts PTFE diaphragms, durable, corrosion-proof, and long-lasting. Max. Temperature: 150 ℉/66 ℃; Max. Pressure: 120 psi; Max. Flow Rate：39.6 GPM; Max Head Lift：275.6 ft/84 m.
Sturdy & Leak-proof Construction: The diaphragm pump housing is made of aluminum alloy material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
Excellent Air-operated Performance: Inlet/Outlet Port Size: 1 inch; Air Inlet Size: FNPT 1/2 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes...
Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing...
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...
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...
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...
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...
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...
Diaphragm Pump Details: Material: Engineering plastic, PTFE pneumatic conveying pump, working flow 22 GPM, maximum pressure 120 PSI, 1-inch fluid inlet and outlet, pneumatic inlet size 1/4 NPT, thread size is 3/8, external 8MM pipe, maximum temperature...
PTFE material has excellent durability and is widely used for transporting various liquids. The material surface has excellent sliding properties, even for high viscosity special liquids, it can be transported normally
PTFE pneumatic diaphragm pump is small in size, easy to move, sturdy and leak proof, easy to use, simple to install, and low in maintenance cost
Pneumatic diaphragm pumps have self-priming ability, do not require liquid filling, do not require electricity, and do not generate sparks. In special operations, they ensure safe use
Pneumatic diaphragm pumps are widely used in industries such as automotive manufacturing, material transportation, coatings, gasoline, diesel, and petroleum
NOTE: Before first use, please retighten all screws on the diaphragm pump. Transportation may loosen fasteners, potentially causing leaks during operation. Tightening all screws before use ensures a secure seal and optimal performance.
EXCELLENT EFFICIENCY: Double diaphragm pump motor design delivers optimum air efficiency.Double Diaphragm:PTFE, Nitrile Rubber and Polychloroprene
RELIABILITY: Diaphragm pump unbalanced air valve ensures no-stall operation.Air diaphragm pump good abrasion resistance, chemical resistance, and heat resistance
SAFETY: Air diaphragm pump bolted construction for leak-free fluid handling. ease of use/comfortability
VARIOUS INDUSTRIES: Diaphragm pump can petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive and other chemical industries
Diaphragm Pump: 110V AC water diaphragm pump provides 4.0GPM flow capacity. Turns on and off using water pressure at 50PSI, 1.3 Max amps. AC power supply, no need to carry marine battery with you
Smart Pressure Switch: Turns on and off on demand. It’s quiet, shuts itself off when the faucets are closed and runs when the faucets are opened. It also can adjust according to your needs, adjustable pressure range is 45-70PSI
Reliable Performance: Self-Priming up to 9.8 vertical feet, lift up to 131 feet. Thermal overload protection is built into the water pump to make it safe to use. When the temperature is above 95℃/ 203℉, it will automatically disconnect the circuit to...
Multipurpose: The nemesis of low water pressure. Support continuous operation for more than 1 hour. The water transfer pump is suitable for many fields, like RV, Marine, Boat, Irrigation, Sprinkler, Faucet and so on
Your First Choice: We always pay attention to customer shopping experience. If you have any questions during use, please feel free to contact with us at the first time. We will always be here
Sturdy & Leak-proof Construction: The diaphragm pump housing is made of aluminum alloy material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
Excellent Air-operated Performance: Inlet/Outlet Port Size: 2 inch; Air Inlet Size: FNPT 1/2 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes...
Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing...
Diaphragm Pump Details: Material: 304 stainless steel, PTFE pneumatic conveying pump, working flow 8.8 GPM, maximum pressure 120 PSI, 1/2-inch fluid inlet and outlet, pneumatic inlet size 1/4 NPT, thread size is 3/8, external 8MM pipe, maximum temperature...
PTFE material has excellent durability and is widely used for transporting various liquids. The material surface has excellent sliding properties, even for high viscosity special liquids, it can be transported normally
PTFE pneumatic diaphragm pump is small in size, easy to move, sturdy and leak proof, easy to use, simple to install, and low in maintenance cost
Pneumatic diaphragm pumps have self-priming ability, do not require liquid filling, do not require electricity, and do not generate sparks. In special operations, they ensure safe use
Pneumatic diaphragm pumps are widely used in industries such as automotive manufacturing, material transportation, coatings, gasoline, diesel, and petroleum
Sturdy & Leak-proof Construction: The diaphragm pump housing is made of cast iron material, bolted against leakage, sturdy, and corrosion-proof for long-time use.
Excellent Air-operated Performance: Inlet/Outlet Port Size: 1/2 inch; Air Inlet Size: FNPT 1/4 inch. A high-quality glyd ring, the double-acting sealing, strengthens air performance.
Unique & Professional Designs: Our double diaphragm pump features an externally available air distribution system. The modular air valve is stainless. This low pulsation air valve provides smooth and rapid changeover for increased efficiency and minimizes...
Wide Applications: This diaphragm pump can handle various fluids, such as waste oil, alcohol, hydraulic fluid, gasoline, diesel, detergent, drink, and so on. It is widely used in many industries, such as petroleum, metallurgy, mining, coating, printing...
Diaphragm Pump Specifications: 110V AC water pump features 5.5 gallons per minute water flow, the pressure switch is set to 70PSI, Self-Priming up to 9.8 vertical feet, lift up to 131 feet. 1.6 Max amps; excellent performance in all aspects
Upgraded Pressure Switch: It lasts longer. For any pressure switch problems, we will provide all effective after-sales service. Water supply when the faucet is opened, and power off when the faucet is closed, 70PSI. Pressure enough for daily use, it also...
Quieter & Safer Design: Thermal overload protection is built into the water pump to make it safe to use. When the temperature is above 70℃/ 158℉, it will automatically disconnect the circuit to protect the motor
Widely Compatible: Continue running for more than 1 hour. This pump is a high pressure pump and used for spraying down items, such as boat decks, driveways, and cleaning off parts
Your First Choice: We always pay attention to customer shopping experience. If you have any doubts, you can always talk to us through the order form. We will always be here
Last update on 2026-09-01 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Diaphragm Pumps
Maintenance and Reliability
Diaphragm pumps generally require less maintenance than other pump types, but understanding wear components like diaphragms and check valves is important. Choosing reputable brands often correlates with better build quality and readily available spare parts. Consider the pump's duty cycle and expected lifespan based on your operational demands.
Frequently Asked Questions
What is the primary advantage of an air-operated double-diaphragm (AODD) pump?
AODD pumps are highly versatile, capable of handling a wide range of fluids, including abrasive, corrosive, and shear-sensitive materials. They can also run dry without damage and are self-priming, offering significant operational flexibility.
How do I determine the correct material compatibility for my diaphragm pump?
You must match the pump's wetted parts (diaphragm, valve seats, check balls, and housing) to the chemical properties of the fluid being pumped. Consult chemical resistance charts provided by manufacturers to ensure longevity and prevent material degradation.
What is the difference between maximum flow rate and maximum pressure?
The maximum flow rate indicates the highest volume of fluid the pump can move in a given time, while the maximum pressure refers to the highest discharge pressure the pump can generate. These specifications are often inversely related; as pressure increases, flow rate typically decreases.
Are diaphragm pumps suitable for pumping viscous fluids?
Yes, many diaphragm pumps are well-suited for viscous fluids. The pumping action is less affected by viscosity than with centrifugal pumps. However, it's crucial to select a pump with appropriate port sizes and potentially higher horsepower or air supply for very thick liquids.
What maintenance is typically required for a diaphragm pump?
The most common maintenance involves checking and replacing diaphragms and check valves as they wear. Regular inspection of air filters and lubrication (if applicable) for AODD pumps also contributes to optimal performance and longevity.
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