1
Reduces water hammer noise during operation.
Clear body for easy visibility of water flow.
Includes stainless steel clamps for quick installation.
Compatible with 1-1/2" Schedule 40 pipe.
Prevents water from returning to sump basin.
Extends lifespan of sump pump systems.
Designed for quiet and efficient operation.
Average Rating out of 5:
Price Range: $26.99
Size: 1.5 Inches
Material: ABS
2
1-1/2 inch PVC plastic construction for durability.
Slip x slip unions for easy installation.
Designed to prevent water hammer issues.
Vertical or horizontal installation flexibility.
Flapper design reduces sharp edge flow restrictions.
Handles up to 4.3 PSI pressure.
Operates efficiently at 130°F maximum temperature.
Average Rating out of 5:
Price Range: $24.03
Size: 1.5 Inches,1.5 Inches,1 1/4" or 1 1/2"
Material: Plactic and Metal
3
Fits 1-1/4-inch and 1-1/2-inch NPT threads.
Constructed from durable ABS plastic material.
Includes high-quality Nitril-Bruna N seal.
Universal design for versatile applications.
Comes with check valve and two adapters.
Maximum water pressure limit: 11 psi.
Easy installation and reliable performance.
Average Rating out of 5:
Price Range: $6.79
Size: Pack of 1,1 1/4 - 1 1/2 inches NPT
Material: ABS Plastic
4
Durable PVDF material for longevity and reliability.
Silicon rubber diaphragm for optimal sealing performance.
1/2" barb fits standard 1/2" hose ID.
Operates effectively between 25℃ to 60℃.
Resistant to acid, alkali, and salt corrosion.
Prevents reverse fluid flow in systems.
Ideal for fuel, water, and air applications.
Average Rating out of 5:
Price Range: $5.99
Material: Plastic, Rubber
5
Durable no-lead brass construction for longevity.
IAPMO certified for reliable performance.
1" size fits standard plumbing applications.
Effective backflow prevention for consistent flow.
Abrasion-resistant O-ring for positive sealing.
Usable in vertical and horizontal positions.
Best suited for specific setups, not all conditions.
Average Rating out of 5:
Price Range: $19.99
Size: 1 Inches
Material: Brass
6
Prevents water backflow to the source.
3/4 inch female iron pipe threaded connection.
Compatible with standard hoses for easy installation.
Durable brass construction for long-lasting use.
Working pressure of 200 PSI for reliable performance.
Minimum 5 PSI required to open the spring.
Compliant with the Safe Drinking Water Act.
Average Rating out of 5:
Price Range: $11.35
Color: Brass
Material: Stainless Steel, Brass
7
10 pack for multiple applications and installations.
Durable PVDF material ensures long-lasting performance.
Prevents backflow of liquids and gases effectively.
Compatible with water, oil, petrol, and air.
Compact design facilitates easy installation and maintenance.
One-way barb design for efficient fluid control.
Non-toxic and safe for various applications.
Average Rating out of 5:
Price Range: $8.99
Size: 0.25 Inches,0.25 Inches,1/4 inch
Material: Plastic
8
1/2" diameter for versatile liquid handling.
Durable PVDF plastic for corrosion resistance.
Silicone rubber diaphragm, safe and non-toxic.
Pagoda groove design for excellent air tightness.
Suitable for various applications and industries.
Reliable performance from -25℃ to 135℃.
30-day return policy for customer satisfaction.
Average Rating out of 5:
Price Range: $5.99
Size: 0.5 Inches,0.5 Inches,1/2 inch
Material: PVDF
9
Durable 304 stainless steel construction.
Prevents fluid backflow effectively.
Easy installation and disassembly.
Temperature range: -60 to 450°F.
Maximum pressure: 600 PSI.
Compatible with various fluids and gases.
Ideal for industrial pipeline applications.
Average Rating out of 5:
Price Range: $14.69
Size: 3/8" MNPT x 3/8" FNPT
Material: Stainless Steel
10
Brass construction for enhanced corrosion resistance.
1/4" NPT Female to NPT Male connection options.
Ideal for small compressor tank check applications.
Fluorocarbon O-rings ensure chemical resistance.
Operates efficiently up to 250 psi pressure.
Designed for maximum temperature of 250°F.
Low magnetic permeability for sensitive applications.
Average Rating out of 5:
Price Range: $7.89
Material: Brass
11
Durable brass construction for long-lasting performance.
Ideal for small compressors and pneumatic circuits.
Corrosion-resistant material for reliable operation.
Fluorocarbon O-rings for enhanced chemical resistance.
Female and male NPT threads for easy connections.
Maximum pressure rating of 250 psi.
Operates up to 250 degrees Fahrenheit safely.
Average Rating out of 5:
Price Range: $8.77
Material: Brass
12
Leak-free solvent connections for secure installation.
Stainless steel spring prevents backflow effectively.
Not recommended for potable water applications.
Cracking pressure at 0.5 PSI for efficiency.
Temperature range from 41° to 140° Fahrenheit.
ISO 9002 approved for quality assurance.
Versatile installation: vertical or horizontal options.
Average Rating out of 5:
Price Range: $9.99
Size: 1.5 Inches,1-1/2 in.
Color: White
Material: Stainless Steel
13
Durable brass construction ensures long-lasting performance.
100% lead-free for safe freshwater use.
Effective backflow prevention for plumbing systems.
Compact 1/2" size for easy installation.
MPT x MPT connection style for versatile fittings.
Reliable operation in various freshwater applications.
Quality assurance backed by Valterra brand.
Average Rating out of 5:
Price Range: $9.99
Size: 1 Count (Pack of 1),1/2 inches
Material: Brass
14
Durable ABS resin construction for longevity.
Effective silicone rubber diaphragm for reliability.
Prevents reverse flow in fluid systems.
Suitable for air, liquid, and gas applications.
Operates efficiently between 25℃ to 60℃.
Resistant to acid, alkali, and salt corrosion.
Available in 1, 2, or 5 pieces options.
Average Rating out of 5:
Price Range: $10.99
Material: Acrylonitrile Butadiene Styrene (ABS)
15
Made from durable PVDF material.
Silicon rubber diaphragm for effective sealing.
Prevents backflow in fluid systems.
Suitable for air and water applications.
Compact size fits standard 1/4" hoses.
Corrosion resistant against acids and alkalis.
Ideal for various industrial applications.
Average Rating out of 5:
Price Range: $5.99
Color: 1PCS
Material: Rubber
16
Durable brass construction for long-lasting performance.
Corrosion-resistant for reliable use in harsh conditions.
3/4" size suitable for various applications.
Rated for maximum pressure of 200PSI.
Prevents backflow for efficient fluid management.
Easy to install and maintain.
Versatile for fuel, air, liquid, and gas systems.
Average Rating out of 5:
Price Range: $8.39
Size: 0.75 Inches,0.75 Inches,3/4" Female x 3/4" Male
Material: Brass
17
1 inch NPT for secure fluid flow.
Durable 304 stainless steel construction.
Prevents backflow efficiently and reliably.
Works in vertical and horizontal positions.
Max pressure rating of 14 bar (200 psi).
Temperature range: -10℃ to +120℃.
Ideal for various industrial applications.
Average Rating out of 5:
Price Range: $15.99
Size: 1 Inches,1'' NPT
Material: Stainless Steel
18
High-quality stainless steel SS316 construction.
1" NPT female ports for easy installation.
Low cracking pressure of 4.5 psi.
Max pressure rating of 1000 psi.
Suitable for water, oil, and gas applications.
Corrosion-resistant for various fluid types.
Spring-loaded design prevents backflow effectively.
Average Rating out of 5:
Price Range: $12.99
Size: 1 Inches,1 Inches,1 Inch
Material: Stainless Steel, Zinc
19
One-way flow control prevents backflow effectively.
Explosion-proof and wear-resistant stainless steel construction.
Smooth inner wall for clog-free operation.
Durable design ensures long service life.
Wide range of applications in various industries.
Maximum pressure: 1.6 MPa / 232.06 psi.
Operates in temperatures from -196℃ to +800℃.
Average Rating out of 5:
Price Range: $14.99
Size: 1"-NPT
Material: Stainless Steel
20
Quiet operation reduces water hammer noise.
Transparent body for easy water movement visibility.
Precision fit for hassle-free installation.
Prevents water backflow efficiently.
Leak-free with corrosion-resistant materials.
Includes durable stainless steel clamps.
Prolongs sump pump lifespan significantly.
Average Rating out of 5:
Price Range: $20.99
21
Durable Schedule 40 PVC construction for longevity.
Corrosion-resistant for reliable outdoor use.
EPDM seal ensures resistance to water and oils.
Maximum pressure rating of 150 psi.
Secure closure with 1/2 lb spring tension.
Easy installation with 2" slip connections.
Ideal for various plumbing applications.
Average Rating out of 5:
Price Range: $26.90
Material: PVC
22
Prevents backflow of liquids and gases.
Durable brass construction for long-lasting performance.
Smooth inner surface reduces clogging and scaling.
Wide application in various industrial systems.
Maximum pressure rating of 1.6 MPa.
Operating temperature range: -20℃ to +150℃.
Horizontal design for easy installation.
Average Rating out of 5:
Price Range: $8.99
Size: 0.5 Inch
Material: Brass
23
Easy installation with flush tool saves time.
Removable pressure vessel reduces repair costs.
Corrosion-resistant stainless steel construction.
Durable, UV-resistant reinforced nylon design.
Reduces labor costs by 75% or more.
ASSE Listed 1015 and CSA Certified.
Compliant with AWWA standards for quality assurance.
Average Rating out of 5:
Price Range: $196.41
Material: Bronze
24
Durable Schedule 40 PVC construction for longevity.
Resistant to corrosion and mild chemicals.
EPDM seal for superior water and oil resistance.
Maximum pressure rating of 150 psi.
Full flow design minimizes flow loss.
2" female slip connections for easy installation.
Rust-proof and reliable for various applications.
Average Rating out of 5:
Price Range: $15.29
Material: PVC
25
Durable 3/4 inch non-return check valve.
Ideal for marine bilge pump applications.
Prevents backflow in hoses effectively.
Constructed from high-quality materials.
Easy installation for quick setup.
Includes two check valves in pack.
Compact design for space-saving use.
Average Rating out of 5:
Price Range: $15.99
26
3/4" NPT female thread for easy installation.
Prevents backflow of fluids effectively.
Maximum pressure rating of 200 psi.
Durable brass body construction.
Stainless steel spring for long-lasting performance.
Corrosion-resistant for extended use.
Suitable for water, oil, and gas applications.
Average Rating out of 5:
Price Range: $15.99
Size: 0.75 Inches,0.75 Inches,3/4" Female
Material: Brass
27
1" NPT brass foot valve for easy installation.
Heavy-duty construction ensures long-lasting performance.
Filters large impurities with round hole design.
Prevents backflow in water systems effectively.
Wide application for pumps and pipe systems.
Spring and gasket materials ensure leak prevention.
Quality inspection guarantees reliable product performance.
Average Rating out of 5:
Price Range: $16.99
Size: 1 Inches,1 Inches,1'' NPT
Material: Brass
28
1/4" (6mm) size for versatile applications.
Prevents backward flow of liquid or air.
Durable PA66 shell for long-lasting use.
VITON diaphragm for high temperature resistance.
SUS316L spring withstands harsh environments.
Ideal for fuel pumps and automotive use.
Pack of 2 for added value and convenience.
Average Rating out of 5:
Price Range: $6.59
Material: Viton
