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about backflow preventer

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backflow preventer100+ factories verified

Tianjin Sunshine Valve Co., Ltd.

·Manufacturer/Factory & Trading Company

Premium-Quality Anti-Vibration Corrosion-Resistant Backflow Preventer on The Pump Outlet

Premium-Quality Anti-Vibration Corrosion-Resistant Backflow Preventer on The Pump Outlet

US$10.00-100.00

Premium-Quality Piston-Type Self-Actuating Backflow Preventer in The Water Pipeline

Premium-Quality Piston-Type Self-Actuating Backflow Preventer in The Water Pipeline

US$10.00-100.00

Versatile Piston-Type Corrosion-Resistant Backflow Preventer with a Threaded Connection

Versatile Piston-Type Corrosion-Resistant Backflow Preventer with a Threaded Connection

US$10.00-100.00

High-Temperature Automatic Industrial Backflow Preventer with a Spring Mechanism

High-Temperature Automatic Industrial Backflow Preventer with a Spring Mechanism

US$10.00-100.00

1/4

Foshan Fuhouxiang Fire Valve Co., Ltd.

Low Resistance Backflow Preventer for Fire Protection Systems

Low Resistance Backflow Preventer for Fire Protection Systems

100 Pieces(MOQ)

Low-Resistance Backflow Preventer for Commercial Building Fire Sprinklers

Low-Resistance Backflow Preventer for Commercial Building Fire Sprinklers

100 Pieces(MOQ)

Compact Low-Resistance Backflow Preventer for Fire Control with FM Certification

Compact Low-Resistance Backflow Preventer for Fire Control with FM Certification

100 Pieces(MOQ)

Energy-Saving Low-Pressure Loss Backflow Preventer for Industrial Fire Water Supply

Energy-Saving Low-Pressure Loss Backflow Preventer for Industrial Fire Water Supply

100 Pieces(MOQ)

1/4

Goole Valve technology Co., Ltd.

Stainless Steel Integrated Backflow Preventer (GADF41X)

Stainless Steel Integrated Backflow Preventer (GADF41X)

Stainless Steel Low Resistance Backflow Preventer

Stainless Steel Low Resistance Backflow Preventer

Stainless Steel Integrated Low Resistance Backflow Preventer (GADF41X)

Stainless Steel Integrated Low Resistance Backflow Preventer (GADF41X)

Stainless Steel Threaded Low Resistance Backflow Preventer (GALHS711X)

Stainless Steel Threaded Low Resistance Backflow Preventer (GALHS711X)

1/4

Dvk International Co., Ltd.

·Trading Company

High Quality Ductile Iron DN300 Pn25 Backflow Preventer

High Quality Ductile Iron DN300 Pn25 Backflow Preventer

US$50.00-5,000.00

High Performance Ductile Iron DN50~DN300 Backflow Preventer

High Performance Ductile Iron DN50~DN300 Backflow Preventer

US$50.00-5,000.00

High Quality Ductile Iron DN50~DN300 Backflow Preventer

High Quality Ductile Iron DN50~DN300 Backflow Preventer

US$50.00-5,000.00

OEM Ductile Iron Pn16 DN50 Backflow Preventer

OEM Ductile Iron Pn16 DN50 Backflow Preventer

US$50.00-5,000.00

1/4

Ningbo Imetal Industry Co., Ltd

One-Way Airflow Draft Blocker Backdraft Damper Duct Draft Stopper Insert Backflow Preventer

One-Way Airflow Draft Blocker Backdraft Damper Duct Draft Stopper Insert Backflow Preventer

US$1.80-2.30

500 Pieces(MOQ)

One-Way Airflow Duct Draft Stopper Backdraft Damper Duct Insert Backflow Preventer

One-Way Airflow Duct Draft Stopper Backdraft Damper Duct Insert Backflow Preventer

US$1.80-2.30

500 Pieces(MOQ)

One-Way Airflow Duct Draft Blocker Backdraft Damper Duct Insert Backflow Preventer

One-Way Airflow Duct Draft Blocker Backdraft Damper Duct Insert Backflow Preventer

US$1.80-2.30

500 Pieces(MOQ)

One-Way Airflow Duct Draft Stopper Insert Backflow Preventer Inline Fan Deflector Damper

One-Way Airflow Duct Draft Stopper Insert Backflow Preventer Inline Fan Deflector Damper

US$1.80-2.30

500 Pieces(MOQ)

1/4

Qingdao HQ Import & Export Co., Ltd.

Cast Iron Grooved Backflow Preventer Check Valve for Water

Cast Iron Grooved Backflow Preventer Check Valve for Water

US$50.00-1,000.00

100 Pieces(MOQ)

Ductile Iron Grooved Backflow Preventer with UL/FM Certified

Ductile Iron Grooved Backflow Preventer with UL/FM Certified

US$50.00-1,000.00

100 Pieces(MOQ)

Casting Iron Grooved Valve Backflow Preventer for Fire Protection System Use

Casting Iron Grooved Valve Backflow Preventer for Fire Protection System Use

US$50.00-1,000.00

100 Pieces(MOQ)

Backflow Preventer Grooved Check Valve with UL/FM Certified

Backflow Preventer Grooved Check Valve with UL/FM Certified

US$50.00-1,000.00

100 Pieces(MOQ)

1/4

Hebei Derunze Chemical Equipment Co., Ltd

·Manufacturer/Factory & Trading Company

Non-Corrosive FRP Flap Gate - Lightweight, Automatic Backflow Preventer for Marine, Chemical and Wastewater Applications

Non-Corrosive FRP Flap Gate - Lightweight, Automatic Backflow Preventer for Marine, Chemical and Wastewater Applications

US$95.00-100.00

Non-Corrosive Flap Valve - Never Rusts, Reliable Backflow Preventer for Water Systems

Non-Corrosive Flap Valve - Never Rusts, Reliable Backflow Preventer for Water Systems

US$95.00-100.00

FRP&GRP Flap Gate Valve - Backflow Prevention & Waterproof Design

FRP&GRP Flap Gate Valve - Backflow Prevention & Waterproof Design

US$5.44-5.88

FRP Check Valve Production Round Composite Resin Flap Gate to Prevent Backflow

FRP Check Valve Production Round Composite Resin Flap Gate to Prevent Backflow

US$50.00-500.00

1/4

Taizhou Jiaxin Metals Co., Ltd.

3/4" Inch Hose Bibb Connector Backflow Preventer-Vacuum Breaker

3/4" Inch Hose Bibb Connector Backflow Preventer-Vacuum Breaker

US$0.50-3.00

1,000 Pieces(MOQ)

Vacuum Breaker Hose Bib Backflow Preventer, 3/4 Inch, Brass Finish

Vacuum Breaker Hose Bib Backflow Preventer, 3/4 Inch, Brass Finish

US$0.50-3.00

1,000 Pieces(MOQ)

Vacuum Breaker Valve, Hose Bib Backflow Preventer, 3/4 Inch, Brass Finish

Vacuum Breaker Valve, Hose Bib Backflow Preventer, 3/4 Inch, Brass Finish

US$0.50-3.00

1,000 Pieces(MOQ)

Brass Check Valve 3/4" Thread Female One Way Backflow Preventer Check Valves

Brass Check Valve 3/4" Thread Female One Way Backflow Preventer Check Valves

US$0.50-5.00

1,000 Pieces(MOQ)

1/4

Like Valve (Tianjin) Co., Ltd.

·Manufacturer/Factory & Trading Company

DN500 Pn16 Cast Iron Body Rubber Coated Plate Swing Check Valve Backflow Preventer

DN500 Pn16 Cast Iron Body Rubber Coated Plate Swing Check Valve Backflow Preventer

US$243.00-295.00

Stainless Steel CF8 Wafer Type Double Disc Swing Check Valve Backflow Preventer

Stainless Steel CF8 Wafer Type Double Disc Swing Check Valve Backflow Preventer

US$26.00-33.00

Hydraulic Swing Cast Iron Rubber Lined Tilting Check Valve

Hydraulic Swing Cast Iron Rubber Lined Tilting Check Valve

US$37.00-46.00

DN350 Class150 Ductile Iron Rubber Plate Flanged Swing Check Valve One Way

DN350 Class150 Ductile Iron Rubber Plate Flanged Swing Check Valve One Way

US$37.00-46.00

1/4

Shanghai Flow Valve & Fitting Co., Ltd.

·Manufacturer/Factory & Trading Company

Cast Iron/Carbon Steel BS4504/DIN/ANSI B 16.5 Class 125/150 Size 2'-12 Triple Duty Check Valve Water Check Valve Backflow Preventer

Cast Iron/Carbon Steel BS4504/DIN/ANSI B 16.5 Class 125/150 Size 2'-12 Triple Duty Check Valve Water Check Valve Backflow Preventer

ANSI Class150 Carbon Steel/Cast Iron/Stainless Steel Flange End Double Check Valve Vs Backflow Preventer

ANSI Class150 Carbon Steel/Cast Iron/Stainless Steel Flange End Double Check Valve Vs Backflow Preventer

US$5.00-100.00

Anti Backflow with Cast Iron Body and NBR Seat Wafer Swing Check Valve

Anti Backflow with Cast Iron Body and NBR Seat Wafer Swing Check Valve

US$5.00-150.00

Carbon Steel/Stainless Steel Body Pn16 Class 125/ 150 Wafer Type Silent Check Valve

Carbon Steel/Stainless Steel Body Pn16 Class 125/ 150 Wafer Type Silent Check Valve

US$5.00-100.00

1/4

Wenbao Valve Co., Ltd.

·Manufacturer/Factory & Trading Company

Dsbp741X Cast Iron Ductile Iron Low Resistance Backflow Preventer (anti-pollution isolation valve)

Dsbp741X Cast Iron Ductile Iron Low Resistance Backflow Preventer (anti-pollution isolation valve)

100 Pieces(MOQ)

Stainless Steel Cast Steel Ductile Iron Cast Iron Low Resistance Backflow Preventer

Stainless Steel Cast Steel Ductile Iron Cast Iron Low Resistance Backflow Preventer

100 Pieces(MOQ)

Backflow Preventer for Fire Protection System Use

Backflow Preventer for Fire Protection System Use

100 Pieces(MOQ)

1/4

Guangdong Wanjun Valve Technology Co., Ltd

·Manufacturer/Factory & Trading Company

Lhs743X-16p 304ss Low Resistance Air Gap Backflow Preventer for Building Water Systems

Lhs743X-16p 304ss Low Resistance Air Gap Backflow Preventer for Building Water Systems

Df41X-16p 304 Stainless Steel Flanged Rpz Backflow Preventer for Drinking Water Supply Systems

Df41X-16p 304 Stainless Steel Flanged Rpz Backflow Preventer for Drinking Water Supply Systems

US$148.50-455.00

100 Pieces(MOQ)

H44W-16p 304 Stainless Steel Flanged Swing Check Valve for Water Systems

H44W-16p 304 Stainless Steel Flanged Swing Check Valve for Water Systems

US$24.00-274.00

1/4

Zhejiang Zhitong Pipe Valve Technology Co., Ltd.

Stainless Steel High Flow Casting Full Bore Y Type Swing Backflow Preventer

Stainless Steel High Flow Casting Full Bore Y Type Swing Backflow Preventer

Stainless Steel Customized Large Flow Single/Double Disc Backflow Preventer

Stainless Steel Customized Large Flow Single/Double Disc Backflow Preventer

1/4

Flowflex Enterprise Co., Ltd.

Backflow Preventer 3/4 in Water Pressure Reducing Valve, NPT Thread Union X NPT Female, Max Work 400 Psi, Adjust 25-75 Psi

Backflow Preventer 3/4 in Water Pressure Reducing Valve, NPT Thread Union X NPT Female, Max Work 400 Psi, Adjust 25-75 Psi

US$20.00-30.00

1,000 Pieces(MOQ)

Backflow Preventer Water Technologies Standard Capacity, Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, 3/4 Inch

Backflow Preventer Water Technologies Standard Capacity, Water Pressure Reducing Valve, Double Union Solder Inlet and Outlet, 3/4 Inch

US$20.00-30.00

1,000 Pieces(MOQ)

1/4

Hongxing Manufacturing Group Ltd.

Brass Compression Connection Backflow Preventers Check Non-Return Valve with Drain

Brass Compression Connection Backflow Preventers Check Non-Return Valve with Drain

US$0.50-2.00

1,000 Pieces(MOQ)

Axle in Brass Core Vertical Spring Loaded Backflow Preventers Check Non-Return Valve

Axle in Brass Core Vertical Spring Loaded Backflow Preventers Check Non-Return Valve

US$0.50-2.00

1,000 Pieces(MOQ)

Plastic Core Type Backflow Preventers Brass Non-Return Valve with Filter Mesh

Plastic Core Type Backflow Preventers Brass Non-Return Valve with Filter Mesh

US$0.50-2.00

1,000 Pieces(MOQ)

Brass Water Vertical Spring Loaded Ball Lift Backflow Preventers Check Non-Return Valve

Brass Water Vertical Spring Loaded Ball Lift Backflow Preventers Check Non-Return Valve

US$0.50-2.00

1,000 Pieces(MOQ)

1/4

Ningbo Boro Industries Co., Ltd.

Brass Intermediate Atmos Vent Plumbing Backflow Preventer Check Valves

Brass Intermediate Atmos Vent Plumbing Backflow Preventer Check Valves

US$8.11-8.27

1,000 Pieces(MOQ)

Bsp Thread Forged Brass Chrome Plated 1/2 " Water Angle Valve

Bsp Thread Forged Brass Chrome Plated 1/2 " Water Angle Valve

US$6.05-6.66

1,000 Pieces(MOQ)

Bsp Forged Brass Chrome Plated 3/8 " 1/2 " 5 Way Angle Valve

Bsp Forged Brass Chrome Plated 3/8 " 1/2 " 5 Way Angle Valve

US$6.15-6.77

1,000 Pieces(MOQ)

Bsp Thread Forged Brass Chrome Plated 3/8 " 1/2 " 5 Way Angle Valve

Bsp Thread Forged Brass Chrome Plated 3/8 " 1/2 " 5 Way Angle Valve

US$6.15-6.77

1,000 Pieces(MOQ)

1/4

Keep Promise Global (Xiamen) Holding Limited

Durable 304 Stainless Steel Check Valve for Backflow Prevention

Durable 304 Stainless Steel Check Valve for Backflow Prevention

US$19.83-20.67

100 Pieces(MOQ)

Ductile Iron/Cast Steel/Stainless Steel Double Check Backflow Prevention Valve for Water Systems

Ductile Iron/Cast Steel/Stainless Steel Double Check Backflow Prevention Valve for Water Systems

US$39.00-598.00

Ductile Iron/Cast Steel/Stainless Steel Preventer Flanged Backflow Valve for Water Supply Systems

Ductile Iron/Cast Steel/Stainless Steel Preventer Flanged Backflow Valve for Water Supply Systems

US$39.00-598.00

Low Resistance Backflow Preventer for Water Supply Pipelines with Ductile Iron Valve

Low Resistance Backflow Preventer for Water Supply Pipelines with Ductile Iron Valve

US$39.00-598.00

1/4

ZHEJIANG MENCROWN VALVE CO., LTD.

·Manufacturer/Factory & Trading Company

NPT Thread Screw End Lift Type Non Return Check Valve (H11)

NPT Thread Screw End Lift Type Non Return Check Valve (H11)

US$4.00-100.00

Wcb Non Slam Slow Shut Swing Non Return Check Valve

Wcb Non Slam Slow Shut Swing Non Return Check Valve

US$30.00-300.00

Venturi Nozzle Axial Flow Non Return Check Valve

Venturi Nozzle Axial Flow Non Return Check Valve

US$15.00-300.00

Counter Weight Hammer Swing Type Slow Shut Non Slam Non Return Check Valve

Counter Weight Hammer Swing Type Slow Shut Non Slam Non Return Check Valve

US$100.00-2,000.00

1/4

Wenzhou Chengzheng Valve Co., Ltd

Df41X-16p Stainless Steel Low Resistance Backflow Preventer 304 Stainless Steel Anti Fouling Block Valve DN50 100

Df41X-16p Stainless Steel Low Resistance Backflow Preventer 304 Stainless Steel Anti Fouling Block Valve DN50 100

304 Stainless Steel Low Resistance Backflow Preventer Lhs743X DC Valve with Drain DN50 100

304 Stainless Steel Low Resistance Backflow Preventer Lhs743X DC Valve with Drain DN50 100

Lhs711X External Thread Stainless Steel Threaded Valve Thread Backflow Preventer Anti Fouling Block Valve Internal Thread DN25

Lhs711X External Thread Stainless Steel Threaded Valve Thread Backflow Preventer Anti Fouling Block Valve Internal Thread DN25

Goldenman Petroleum Equipment Co., Limited

·Trading Company

Durable Blowout Preventer RAM Block with API 16A Standard

Durable Blowout Preventer RAM Block with API 16A Standard

US$1,000.00-8,000.00

High Strength RAM Block for Oilfield Blowout Preventer Systems

High Strength RAM Block for Oilfield Blowout Preventer Systems

US$1,000.00-8,000.00

API Certified Bop RAM Block for Blowout Preventer Safety

API Certified Bop RAM Block for Blowout Preventer Safety

US$1,000.00-8,000.00

Customizable Bop RAM Block for Drilling and Workover Rigs

Customizable Bop RAM Block for Drilling and Workover Rigs

US$1,000.00-8,000.00

1/4

NINGJIN APC INDUSTRIES INCORPORATED COMPANY

·Manufacturer/Factory & Trading Company

Fire Protection Valve with UL/FM Certified

Fire Protection Valve with UL/FM Certified

100 Pieces(MOQ)

Check Valve for Fire Protection System Use

Check Valve for Fire Protection System Use

100 Pieces(MOQ)

300psi Gate Valve Soft Wedge Ductile Iron Body OEM Valve

300psi Gate Valve Soft Wedge Ductile Iron Body OEM Valve

Wet Type Fire Protection Hydrant with UL/FM Certified

Wet Type Fire Protection Hydrant with UL/FM Certified

1/4

Ningbo Doway M & E Co., Ltd.

Forged Brass Dual Check Valve for Water Meter

Forged Brass Dual Check Valve for Water Meter

2,000 Pieces(MOQ)

OEM/ODM Lead Free Brass Dual Check Valve

OEM/ODM Lead Free Brass Dual Check Valve

2,000 Pieces(MOQ)

Female Threaded Body Lead Free Brass Double Check Valve

Female Threaded Body Lead Free Brass Double Check Valve

2,000 Pieces(MOQ)

Lf Bronze Union Female Inlet Dual Check Valve

Lf Bronze Union Female Inlet Dual Check Valve

2,000 Pieces(MOQ)

1/4

Shandong Rosenwell Petroleum Technology Co., Ltd.

Rotary Inside Blowout Preventer Ibop for Oil Rig

Rotary Inside Blowout Preventer Ibop for Oil Rig

US$1,500.00-3,000.00

Nov TDS8SA Top Drive Upper Ibop Blowout Preventer Valve

Nov TDS8SA Top Drive Upper Ibop Blowout Preventer Valve

US$20.00-550.00

API 16c Standard Drill Rig Inside Blowout Preventer Ibop Valve

API 16c Standard Drill Rig Inside Blowout Preventer Ibop Valve

US$30.00-200.00

1/4

Ningbo XHnotion Pneumatic Technology Co., Ltd.

Plastic Non Return Valve Supplier

Plastic Non Return Valve Supplier

US$0.06-0.90

2,000 Pieces(MOQ)

Back Flow Safety Valve Dn13

Back Flow Safety Valve Dn13

US$0.15-0.90

2,000 Pieces(MOQ)

Plastic Non Back Flow Preventer Valve

Plastic Non Back Flow Preventer Valve

US$0.06-0.90

2,000 Pieces(MOQ)

1/4

China Zhengfeng Valve Group

Backflow Preventers (Low Pressure)

Backflow Preventers (Low Pressure)

Backflow Preventers

Backflow Preventers

Zhejiang Ruiher-Ga Machinery Mfg. Co., Ltd.

Backflow Preventer

Backflow Preventer

Backflow Preventer

Backflow Preventer

Huhang Technology Group Co., Ltd.

·Manufacturer/Factory & Trading Company

China Huhang Pressure Differential Check Valve DN40-DN600 Model Hadl41X

China Huhang Pressure Differential Check Valve DN40-DN600 Model Hadl41X

US$29.00-198.00

HS41X-16-a Premium Backflow Preventer Valve for Safe Water Flow

HS41X-16-a Premium Backflow Preventer Valve for Safe Water Flow

US$230.00-1,300.00

1/4

HEBEI XINHUAFA PETROLEUM MACHINERY CO., LTD.

·Manufacturer/Factory & Trading Company

API Varco Top Drive Spare Parts Lower Ibop/Inside Bop/Upper Kelly Cock

API Varco Top Drive Spare Parts Lower Ibop/Inside Bop/Upper Kelly Cock

US$500.00-1,000.00

API Varco Top Drive Spare Parts Lower Ibop, Inside Bop/Kelly Valve

API Varco Top Drive Spare Parts Lower Ibop, Inside Bop/Kelly Valve

US$500.00-1,000.00

1/4

Shandong Seaco Machinery Equipment Co., Ltd.

3000-10000psi Bop Wellhead Blowout Preventer 7 1/16"

3000-10000psi Bop Wellhead Blowout Preventer 7 1/16"

US$1,000.00-8,000.00

1/4

Sinotai Petroleum Equipment Co., Ltd

·Trading Company

API Factory Internal Blowout Preventers Float Valve Core

API Factory Internal Blowout Preventers Float Valve Core

1/4

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