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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The Apollo 4ANLF60EE8 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and industrial processing sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). It is commonly found in HVAC, commercial mechanical systems, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). Typical applications span HVAC, fire protection, and oil and gas environments. The 4ANLF60CE4 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove) per the manufacturer's specifications. It is commonly found in marine, industrial processing, and HVAC applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and oil and gas sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE7 is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, HVAC, and plumbing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60AE10 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, industrial processing, and fire protection environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and commercial mechanical systems sectors. The 4ANLF60CE6 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE7 is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, fire protection, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF60CE7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60CE10 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, commercial mechanical systems, and marine environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE7 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE6 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, plumbing, and commercial mechanical systems environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EE10 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, industrial processing, and fire protection applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60AG9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove). It is commonly found in fire protection, commercial mechanical systems, and oil and gas applications. 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 4ANLF60CG9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). Typical applications span fire protection, marine, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove) per the manufacturer's specifications. This product serves professionals across oil and gas, HVAC, and plumbing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AG3 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, industrial processing, and fire protection environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG8 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4ANLF60AG8 is built to perform under real-world conditions. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG7 is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, oil and gas, and industrial processing applications. The 4ANLF60AG7 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 4ANLF60CG3 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and fire protection applications. The 4ANLF60CG3 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG8 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, plumbing, and industrial processing applications. The 4ANLF60CG8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG7 from Apollo is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, and oil and gas sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EG3 is a Type 1 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and fire protection sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG8 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EE8 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and industrial processing sectors. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). It is commonly found in HVAC, commercial mechanical systems, and marine applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). Typical applications span HVAC, fire protection, and oil and gas environments. The 4ANLF60CE4 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove) per the manufacturer's specifications. It is commonly found in marine, industrial processing, and HVAC applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and oil and gas sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE7 is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, HVAC, and plumbing applications. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant FM and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60AE10 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, industrial processing, and fire protection environments. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE6 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and commercial mechanical systems sectors. The 4ANLF60CE6 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE7 is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, fire protection, and oil and gas environments. Backed by Apollo's commitment to quality, the 4ANLF60CE7 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60CE10 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, commercial mechanical systems, and marine environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE7 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EE6 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, plumbing, and commercial mechanical systems environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EE10 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, industrial processing, and fire protection applications. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60AG9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove). It is commonly found in fire protection, commercial mechanical systems, and oil and gas applications. 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 4ANLF60CG9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). Typical applications span fire protection, marine, and plumbing environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove) per the manufacturer's specifications. This product serves professionals across oil and gas, HVAC, and plumbing sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable ASME and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AG3 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, industrial processing, and fire protection environments. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG8 is a Type 1 Double Check Detector Assembly. This product serves professionals across HVAC, industrial processing, and commercial mechanical systems sectors. Backed by Apollo's commitment to quality, the 4ANLF60AG8 is built to perform under real-world conditions. This product meets relevant ASME and NSF standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AG7 is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, oil and gas, and industrial processing applications. The 4ANLF60AG7 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 4ANLF60CG3 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and fire protection applications. The 4ANLF60CG3 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG8 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, plumbing, and industrial processing applications. The 4ANLF60CG8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CG7 from Apollo is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, and oil and gas sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EG3 is a Type 1 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and fire protection sectors. Apollo Valves is recognized globally for engineering products that meet strict performance standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EG8 is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide. This product meets relevant ASME and FM standards.
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.