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 4ANLF60EC3 is a Type 1 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and oil and gas sectors. The 4ANLF60EC3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC8 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and marine environments. The 4ANLF60EC8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC7 from Apollo is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, 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 4ANLF60AC4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove) per the manufacturer's specifications. It is commonly found in HVAC, plumbing, and industrial processing applications. Backed by Apollo's commitment to quality, the 4ANLF60AC4 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CC4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove) per the manufacturer's specifications. This product serves professionals across oil and gas, industrial processing, and marine sectors. The 4ANLF60CC4 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EC4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60AC6 is a Type 1 Double Check Detector Assembly. It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AC10 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, HVAC, and oil and gas sectors. Backed by Apollo's commitment to quality, the 4ANLF60AC10 is built to perform under real-world conditions. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CC6 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span commercial mechanical systems, industrial processing, and marine environments. 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 Valves 4ANLF60CC10 is a Type 1 Double Check Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC6 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, industrial processing, and marine applications. 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 4ANLF60EC10 is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, commercial mechanical systems, and fire protection applications. 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 4ANLF609E9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 2-1/2" (2 x Groove). It is commonly found in fire protection, marine, and plumbing applications. The 4ANLF609E9 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 4ANLF600E9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 3" (2 x Groove) per the manufacturer's specifications. Typical applications span commercial mechanical systems, industrial processing, and HVAC environments. Backed by Apollo's commitment to quality, the 4ANLF600E9 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AE9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove) per the manufacturer's specifications. It is commonly found in plumbing, industrial processing, and fire protection applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). This product serves professionals across plumbing, HVAC, and fire protection sectors. The 4ANLF60CE9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EE9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove). It is commonly found in fire protection, marine, and oil and gas applications. 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 4ANLF609E3 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Backed by Apollo's commitment to quality, the 4ANLF609E3 is built to perform under real-world conditions. It is designed to comply with applicable ASME and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF600E3 is a Type 1 Double Check Detector Assembly. It is commonly found in HVAC, commercial mechanical systems, and oil and gas applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE3 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, commercial mechanical systems, and oil and gas sectors. 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
Part number 4ANLF60AE8 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, fire protection, and commercial mechanical systems environments. Backed by Apollo's commitment to quality, the 4ANLF60AE8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE3 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and fire protection applications. 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 Valves 4ANLF60CE8 is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, oil and gas, and marine applications. 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
Part number 4ANLF60EE3 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, HVAC, and fire protection environments. The 4ANLF60EE3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EC3 is a Type 1 Double Check Detector Assembly. This product serves professionals across commercial mechanical systems, industrial processing, and oil and gas sectors. The 4ANLF60EC3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and ASME standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC8 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, industrial processing, and marine environments. The 4ANLF60EC8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC7 from Apollo is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, 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 4ANLF60AC4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove) per the manufacturer's specifications. It is commonly found in HVAC, plumbing, and industrial processing applications. Backed by Apollo's commitment to quality, the 4ANLF60AC4 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CC4 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove) per the manufacturer's specifications. This product serves professionals across oil and gas, industrial processing, and marine sectors. The 4ANLF60CC4 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60EC4 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60AC6 is a Type 1 Double Check Detector Assembly. It is commonly found in HVAC, oil and gas, and industrial processing applications. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AC10 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, HVAC, and oil and gas sectors. Backed by Apollo's commitment to quality, the 4ANLF60AC10 is built to perform under real-world conditions. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF60CC6 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span commercial mechanical systems, industrial processing, and marine environments. 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 Valves 4ANLF60CC10 is a Type 1 Double Check Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60EC6 from Apollo is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, industrial processing, and marine applications. 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 4ANLF60EC10 is a Type 1 Double Check Detector Assembly. It is commonly found in oil and gas, commercial mechanical systems, and fire protection applications. 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 4ANLF609E9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 2-1/2" (2 x Groove). It is commonly found in fire protection, marine, and plumbing applications. The 4ANLF609E9 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 4ANLF600E9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 3" (2 x Groove) per the manufacturer's specifications. Typical applications span commercial mechanical systems, industrial processing, and HVAC environments. Backed by Apollo's commitment to quality, the 4ANLF600E9 is built to perform under real-world conditions. This product meets relevant ASME and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF60AE9 from Apollo is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (2 x Groove) per the manufacturer's specifications. It is commonly found in plumbing, industrial processing, and fire protection applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). This product serves professionals across plumbing, HVAC, and fire protection sectors. The 4ANLF60CE9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF60EE9 is a Type 1 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove). It is commonly found in fire protection, marine, and oil and gas applications. 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 4ANLF609E3 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and marine applications. Backed by Apollo's commitment to quality, the 4ANLF609E3 is built to perform under real-world conditions. It is designed to comply with applicable ASME and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF600E3 is a Type 1 Double Check Detector Assembly. It is commonly found in HVAC, commercial mechanical systems, and oil and gas applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable FM and ASME requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF60AE3 is a Type 1 Double Check Detector Assembly. This product serves professionals across plumbing, commercial mechanical systems, and oil and gas sectors. 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
Part number 4ANLF60AE8 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span HVAC, fire protection, and commercial mechanical systems environments. Backed by Apollo's commitment to quality, the 4ANLF60AE8 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF60CE3 is a Type 1 Double Check Detector Assembly. It is commonly found in plumbing, oil and gas, and fire protection applications. 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 Valves 4ANLF60CE8 is a Type 1 Double Check Detector Assembly. It is commonly found in commercial mechanical systems, oil and gas, and marine applications. 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
Part number 4ANLF60EE3 from Apollo is a Type 1 Double Check Detector Assembly. Typical applications span plumbing, HVAC, and fire protection environments. The 4ANLF60EE3 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF 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.