Check Valves
Check valves are mechanical devices designed to allow fluid—whether liquid or gas—to flow in only one direction, preventing backflow that can damage equipment or disrupt system performance. Commonly used in industrial, plumbing, and MRO (maintenance, repair, and operations) systems, they automatically open with forward flow and close when flow reverses. Available in various types like swing, ball, and inline designs, check valves are essential for ensuring system integrity, protecting pumps and compressors, and maintaining operational safety.
Types of Check Valves We Offer:
- Swing Check Valves – Ideal for irrigation and low-pressure systems
- Ball Check Valves – Reliable for wastewater and slurry applications
- Piston Check Valves – Designed for precise flow control in hydraulic systems
Centro partners with leading manufacturers to provide top-quality materials and engineering in every check valve we supply. Browse our extensive selection and find the perfect check valve for your needs. Order online today or contact our experts for assistance!
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Engineered by Apollo, the 4ANLF60EG7 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and industrial processing applications. The 4ANLF60EG7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AG4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). This product serves professionals across commercial mechanical systems, fire protection, and industrial processing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). This product serves professionals across fire protection, industrial processing, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EG4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). Typical applications span industrial processing, marine, and HVAC environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG6 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG10 is a Type 1 Double Check Detector Assembly. Typical applications span oil and gas, HVAC, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG6 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, commercial mechanical systems, and industrial processing applications. The 4ANLF60CG6 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG10 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in fire protection, marine, and plumbing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF60EG6 is built to perform under real-world conditions. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60EG10 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, HVAC, and fire protection sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62GBPC is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF62GBPC is built to perform under real-world conditions. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPC is a Type 2 Double Check Detector Assembly. Typical applications span plumbing, oil and gas, and fire protection environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF620BPC from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62ABPC from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62GBPE is a Type 2 Double Check Detector Assembly. This product serves professionals across fire protection, industrial processing, and HVAC sectors. The 4ANLF62GBPE reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPE is a Type 2 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, fire protection, and marine applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF620BPE is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, HVAC, and plumbing applications. The 4ANLF620BPE reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62ABPE is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, oil and gas, and industrial processing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62GBPG is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, oil and gas, and commercial mechanical systems environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPG is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, fire protection, and oil and gas applications. Backed by Apollo's commitment to quality, the 4ANLF62HBPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF620BPG is a Type 2 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, oil and gas, and fire protection sectors. Backed by Apollo's commitment to quality, the 4ANLF620BPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62ABPG is a Type 2 Double Check Detector Assembly. This product serves professionals across HVAC, commercial mechanical systems, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4ANLF62ABPG is built to perform under real-world conditions. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62GC9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 10" (2 x Groove) per the manufacturer's specifications. This product serves professionals across fire protection, HVAC, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove). Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF62AC9 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG7 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and industrial processing applications. The 4ANLF60EG7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AG4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). This product serves professionals across commercial mechanical systems, fire protection, and industrial processing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). This product serves professionals across fire protection, industrial processing, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EG4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). Typical applications span industrial processing, marine, and HVAC environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG6 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG10 is a Type 1 Double Check Detector Assembly. Typical applications span oil and gas, HVAC, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG6 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, commercial mechanical systems, and industrial processing applications. The 4ANLF60CG6 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG10 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in fire protection, marine, and plumbing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and marine sectors. Backed by Apollo's commitment to quality, the 4ANLF60EG6 is built to perform under real-world conditions. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60EG10 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, HVAC, and fire protection sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62GBPC is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF62GBPC is built to perform under real-world conditions. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPC is a Type 2 Double Check Detector Assembly. Typical applications span plumbing, oil and gas, and fire protection environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF620BPC from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, fire protection, and industrial processing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62ABPC from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and marine sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62GBPE is a Type 2 Double Check Detector Assembly. This product serves professionals across fire protection, industrial processing, and HVAC sectors. The 4ANLF62GBPE reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPE is a Type 2 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, fire protection, and marine applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF620BPE is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, HVAC, and plumbing applications. The 4ANLF620BPE reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62ABPE is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, oil and gas, and industrial processing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62GBPG is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, oil and gas, and commercial mechanical systems environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62HBPG is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, fire protection, and oil and gas applications. Backed by Apollo's commitment to quality, the 4ANLF62HBPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF620BPG is a Type 2 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, oil and gas, and fire protection sectors. Backed by Apollo's commitment to quality, the 4ANLF620BPG is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62ABPG is a Type 2 Double Check Detector Assembly. This product serves professionals across HVAC, commercial mechanical systems, and industrial processing sectors. Backed by Apollo's commitment to quality, the 4ANLF62ABPG is built to perform under real-world conditions. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62GC9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 10" (2 x Groove) per the manufacturer's specifications. This product serves professionals across fire protection, HVAC, and plumbing sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove). Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF62AC9 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
FAQS
- A check valve is a one way valve that allows fluid to flow in one direction only and automatically prevents backflow in a piping system.
- A check valve opens when fluid flows in the correct direction and closes when flow stops or reverses. The closing mechanism may use a disc, ball, flap, or spring depending on the valve design.
- Check valves are used to protect pumps, compressors, piping, and equipment from damage caused by reverse flow. They are commonly installed on pump discharge lines.
- Swing check valves rely on gravity and flow to open and close, while spring loaded check valves use a spring to close quickly and reduce water hammer.
- Check valves are made from materials such as cast iron, ductile iron, stainless steel, brass, bronze, PVC, CPVC, and other plastics depending on application needs.