Check Valve for Water Dn25s of 2025
Best Choice1
ZKHZKH 2PCS 1" NPT Horizontal Check Valve, Stainless Steel Non Return Swing Check Valve for Oil Water Gas Air（1", DN25）
Main highlights- 【Widely used 】We offer a wide range of specifications, suitable for most piping systems, which can be widely used in chemical, construction, petroleum, pharmaceutical, food processing, drainage systems and other fields.
- 【One-way flow control】 check valve through the automatic control valve flap opening and closing, to achieve one-way flow control, to prevent backflow of media, to protect the system safety.
- 【Explosion-proof and wear-resistant】316 stainless steel material in 304 stainless steel based on the addition of Ni, Cr, Mo elements, so that its corrosion resistance and high-temperature strength has been greatly improved, at the same time, 316 stainless steel pipe strength and toughness is higher, can withstand greater pressure and impact, is not easy to deformation and rupture.
- 【Easy to Install and Maintain】The check valve is designed to be easy to install, making it easy for you to quickly integrate it into your system. In addition, the valve is designed to be easy to maintain, with simple maintenance procedures that can be performed quickly and efficiently.
- 【Clarification 】Max working pressure: 200 psi. Applicable temperature: from -20°C to +177°C (from -4°F to 350°F). Connection: Common FNPT threads. Flow Direction: Unidirectional. Media range: water, oil, gas.
9.9Exceptional
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Value for Money2
GASHERGASHER 2PCS Swing Brass Check Valve DN25 1" Female Thread, Backflow Prevention, One Way Check Valves for Sump Pump and Air Compressor, Gas Air Fuel Oil Water
Main highlights- 【Swing Check Valve】The one-way brass check valve features a valve disc that can only be opened in one direction, using pressure to prevent backflow of the medium, allowing the medium to flow in one direction only, thus preventing reverse flow. It is widely used in various applications.
- 【Size】1" Female Thread Check Valve （Notice - NPT Thread Size is a Nominal Pipe Size, and it Does Not represent the actual diameter）
- 【PREMIUM QUALITY】smooth surface, no scaling, no clogging, durable and sturdy，and has long service time.
- 【Material/Temperature/Pressure】This check valve is made of high quality brass material，Applicable temperature：-65°F - 250°F And the maximum working pressure is 230PSI
- 【Applications】Widely used in sump pump and air compressor, gas air fuel oil water
9.8Exceptional
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3
PNXKTXO1" Brass Foot Valve, PNXKTXO DN25 Check Valve Non Return Water Pump Bottom Filter with 25mm Hose Barb Fittings Adapter
Main highlights- WARNING: Do not use this product with drinking water systems,Brass no return valve foot valve for well pump are generally installed at the bottom of the pump's underwater pipette and only need to be threaded to the suction facility hose. Suitable for well jet pumps, maintains pump priming, strainer filters out debris
- Package Includes: 1 pcs 1" DN25 brass foot valve for water pump and 25mm hose barb fittings
- Material: The water pump bottom valve is made of copper vertical spring check valve and stainless steel filter screen, which is precise in construction and durable
- Energy Saving: The check valve with filter is generally used for the pump to filter debris and prevent debris from entering the pump, thereby reducing the pump suction resistance of the pump and reducing energy consumption. Maximum working pressures up to 1.6MPA (water, oil, gas)
- Check Action: The foot valve filter allows the pump to remain filled with liquid, which can limit the return of liquid in the pump tube to the water source, and plays the function of only entering and not leaving
9.6Exceptional
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4
SYWUWV1" NPT Stainless Steel Spring Check Valve, WOG1000 NPT Thread unleaded In-Line Vertical Check Valve Non Return One Way Counterflow to Prevent the Medium Backflow for Oil Water Gas Air DN25
Main highlights- WIDE RANGE OF USES -- A variety of specifications are available for most piping systems. Widely used in chemical, construction, petroleum, light and heavy industry, fire fighting, electric power, aerospace, shipbuilding ...
- SUPERB CRAFTSMANSHIP -- The stainless steel vertical check valve inner wall polishing treatment, smooth surface, no scaling, no clogging, practical and durable.
- ONE WAY FLOW CONTROL -- It is a kind of valve that relies on the pressure of the medium to produce the effect of preventing the backflow of the medium. Only allows the medium to flow in one direction, to prevent the medium backflow.
- INSTRUCTION -- Maximum working pressure: 1.6 MPa / 232.06 psi. Applicable temperature: FROM -196℃ TO +800℃（FROM -320.8℉ TO 1472℉）, Flow direction: unidirectional, media range: water, oil, non-corrosive flammable gas. Please select the appropriate size vertical check valve according to the size chart.
- EXPLOSION-PROOF & WEAR-RESISTANT -- The valve body is characterized by pressure and explosion resistance, high temperature resistance and durability... It has uniform wall thickness, high wear-resistant strength and long service life.
9.5Excellent
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5
GASHERGASHER 1PCS Brass Check Valve DN25 1" Female and Male Thread, Backflow Prevention, One Way Check Valves
Main highlights- 【SIZE】: 1" Check Valve
- 【Rated value】: The maximum working pressure is 200PSI
- 【Material】: Using brass valve body and stainless steel spring, it has the characteristics of corrosion resistance, high temperature ductility and low magnetic permeability.
- 【Introduction】: Used to prevent fluid backflow, good tightness, no leakage, easy to install and disassemble.
- 【Applications】: Widely used in fuel/air/liquid/oil/gas, pipeline applications and connections, and can be used in various measuring devices and collectors.
9.4Excellent
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6
ThsGivingStoreNew 1" DN25 Female Thread Bottom Valve, Brass one-Way Check Valve, Water Pump Foot Valve with Filter 1PCS
Main highlights- ★Using a bottom valve can reduce pump suction resistance, saving energy and reducing consumption by preventing the pump and drive motor from rotating in the opposite direction, allowing the pump to operate more efficiently.
- ★The bottom valve is designed to filter debris, protecting your water pump from damage and ensuring its efficient functionality over time, preventing unnecessary repairs.
- ★Our high-quality brass bottom valve is rust-resistant and durable, capable of withstanding 16kg pressure and 1.6MPA of practical environment conditions, making it a reliable choice for long-term use with your water pump.
- ★Our brass bottom valve is incredibly easy to install, requiring no complicated steps. Simply thread it onto your suction hose for quick and hassle-free installation, so you can start using your water pump right away.
- ★Our bottom valve has a non-return effect that optimizes pump performance by preventing water flow, gas, and oil from flowing back.
9.3Excellent
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7
ChillWavesChillWaves Brass In-Line Spring Check Valve DN25 1" Male Thread, One-Way Non-return Vertical Check Valve，Prevent Water Back-flow(2-PACK)
Main highlights- WORKING PRESSURE & TEMPERATURE - 230PSI maximum working pressure, temperature range -4°F to +250°F (-20°C to +121°C)
- Use - Used to prevent backflow of the medium in the pipeline, through the medium itself to flow and thus automatically open and close the valve flap, only allows the medium to flow in one direction, it is suitable for most gases, water, oil.
- Size - 1" Male Thread Check Valve. Note，This thread is not an NPT thread, please refer to the dimensional drawing for specific diameters.
- PRODUCT DESIGN - Can prevent fluid backflow, good sealing, easy to install and disassemble, thickened valve body, inner wall polishing treatment, smooth and not easy to scale, copper stem and copper core to prevent leakage.
- MATERIAL - Made of high-quality brass, with strong wear and corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility，with stainless steel spring, vertical and horizontal installation.
9.1Excellent
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8
MYWEROMYWERO 1" NPT Swing Brass Check Valve DN25, Horizontal One Way Check Valve to Prevent Water Backflow for Sump Pump and Air Compressor
Main highlights- 【WIDE APPLICATION】 Available in a variety of specifications for most piping systems. Widely used in chemical, construction, petroleum, light and heavy industry, fire protection, electric power, water power, aerospace, shipbuilding...
- 【NOTE】Applicable temperature: 14°F≤T≤248°F, flow direction: unidirectional, medium range: water, oil, non-corrosive flammable gas. Please refer to the size chart on the product detail page to select the appropriate size check valve.
- 【NOT EASY TO SCALE】 The inner wall of brass check valve is polished, all copper, smooth surface, no scaling, no blockage, practical and durable.
- 【EXPLOSION-PROOF, WEAR-RESISTANT】 The all-brass valve body has the characteristics of pressure resistance, explosion-proof, high temperature resistance and durability. Uniform wall thickness, high wear strength, long service life and good use effect.
- 【BRASS CHECK VALVE】 It is a valve that relies on its own gravity and medium pressure to prevent the return of the medium. Only one medium is allowed to flow in one direction, preventing media backflow.
9.0Excellent
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9
SEIWEISEIWEI Brass 1" Foot Check Valve for Water Pump - DN25
Main highlights- 【Reduce resistance】The use of a bottom valve can prevent the pump and the drive motor from rotating in the opposite direction, reduce the pump suction resistance, save energy and reduce consumption.
- 【Product guarantee】100% brand new and high quality.
- 【High-quality materials】This product is made of high-quality brass, which is not easy to rust and is durable.
- 【Filter debris】The bottom valve is generally used for self-priming pumps (water pumps) to filter debris to prevent entering the pump.
- 【Easy to install】The brass bottom valve only needs to be threaded to the suction hose, no complicated steps are required.
8.9Very Good
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10
ChillWavesChillWaves Brass Swing Check Valve DN25 1" Female Thread, One-Way Horizontal Non-return Check Valve，Prevent Water Back-flow(1-PACK)
Main highlights- WORKING PRESSURE & TEMPERATURE - 230PSI maximum working pressure, temperature range -4°F to +250°F (-20°C to +121°C)
- Use - Used to prevent backflow of the medium in the pipeline, through the medium itself to flow and thus automatically open and close the valve flap, only allows the medium to flow in one direction, it is suitable for most gases, water, oil.
- Size - 1" Female Thread Swing Check Valve. Note，This thread is not an NPT thread, please refer to the dimensional drawing for specific diameters.
- PRODUCT DESIGN - Can prevent fluid backflow, good sealing, easy to install and disassemble, thickened valve body, inner wall polishing treatment, smooth and not easy to scale, swinging gate plate, seamless collocation, strong sealing, preventing leakage.
- MATERIAL - Made of high-quality brass, with strong wear and corrosion resistance, high compressive strength, durability, low magnetic permeability and high temperature ductility，vertical and horizontal installation.
8.8Very Good
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