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 4ANLF62CC9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). Typical applications span oil and gas, fire protection, and marine environments. The 4ANLF62CC9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove) per the manufacturer's specifications. This product serves professionals across plumbing, fire protection, and industrial processing sectors. 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 Apollo 4ANLF62GC3 is a Type 2 Double Check Detector Assembly. Typical applications span oil and gas, fire protection, and industrial processing environments. 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 4ANLF62HC3 is a Type 2 Double Check Detector Assembly. This product serves professionals across industrial processing, plumbing, and HVAC sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC3 is a Type 2 Double Check Detector Assembly. Typical applications span commercial mechanical systems, HVAC, and plumbing environments. The 4ANLF62AC3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC8 is a Type 2 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and marine sectors. The 4ANLF62AC8 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC7 is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, HVAC, and plumbing applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62CC3 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across fire protection, marine, and plumbing 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
Engineered by Apollo, the 4ANLF62CC8 is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62CC7 is a Type 2 Double Check Detector Assembly. This product serves professionals across oil and gas, marine, and plumbing sectors. The 4ANLF62CC7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC3 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, and oil and gas sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC8 from Apollo is a Type 2 Double Check Detector Assembly. Typical applications span oil and gas, industrial processing, and marine environments. The 4ANLF62EC8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC7 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, commercial mechanical systems, and fire protection applications. Backed by Apollo's commitment to quality, the 4ANLF62EC7 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC4 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). This product serves professionals across marine, plumbing, and HVAC sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62CC4 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). It is commonly found in fire protection, industrial processing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF62CC4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC4 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). Typical applications span oil and gas, fire protection, and industrial processing 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 4ANLF62AC6 is a Type 2 Double Check Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. The 4ANLF62AC6 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
Part number 4ANLF62AC10 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, marine, and commercial mechanical systems applications. The 4ANLF62AC10 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62CC6 is a Type 2 Double Check Detector Assembly. It is commonly found in marine, industrial processing, and HVAC applications. 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
Part number 4ANLF62CC10 from Apollo is a Type 2 Double Check Detector Assembly. Typical applications span fire protection, commercial mechanical systems, and plumbing environments. 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 4ANLF62EC6 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across industrial processing, plumbing, and marine 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 4ANLF62EC10 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, industrial processing, and commercial mechanical systems applications. Backed by Apollo's commitment to quality, the 4ANLF62EC10 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
Engineered by Apollo, the 4ANLF62GE9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 10" (2 x Groove). It is commonly found in oil and gas, marine, and plumbing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF629E9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 2-1/2" (2 x Groove). This product serves professionals across fire protection, commercial mechanical systems, and plumbing sectors. The 4ANLF629E9 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo 4ANLF62CC9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (2 x Groove). Typical applications span oil and gas, fire protection, and marine environments. The 4ANLF62CC9 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (2 x Groove) per the manufacturer's specifications. This product serves professionals across plumbing, fire protection, and industrial processing sectors. 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 Apollo 4ANLF62GC3 is a Type 2 Double Check Detector Assembly. Typical applications span oil and gas, fire protection, and industrial processing environments. 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 4ANLF62HC3 is a Type 2 Double Check Detector Assembly. This product serves professionals across industrial processing, plumbing, and HVAC sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC3 is a Type 2 Double Check Detector Assembly. Typical applications span commercial mechanical systems, HVAC, and plumbing environments. The 4ANLF62AC3 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC8 is a Type 2 Double Check Detector Assembly. This product serves professionals across HVAC, oil and gas, and marine sectors. The 4ANLF62AC8 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC7 is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, HVAC, and plumbing applications. Apollo products are trusted by engineers and specifiers worldwide.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62CC3 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across fire protection, marine, and plumbing 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
Engineered by Apollo, the 4ANLF62CC8 is a Type 2 Double Check Detector Assembly. Typical applications span HVAC, commercial mechanical systems, and industrial processing environments. Apollo Valves is recognized globally for engineering products that meet strict performance standards. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62CC7 is a Type 2 Double Check Detector Assembly. This product serves professionals across oil and gas, marine, and plumbing sectors. The 4ANLF62CC7 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant NSF and UL standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC3 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across plumbing, fire protection, and oil and gas sectors. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. It is designed to comply with applicable ASME and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC8 from Apollo is a Type 2 Double Check Detector Assembly. Typical applications span oil and gas, industrial processing, and marine environments. The 4ANLF62EC8 reflects Apollo's long-standing reputation for quality and innovation.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC7 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, commercial mechanical systems, and fire protection applications. Backed by Apollo's commitment to quality, the 4ANLF62EC7 is built to perform under real-world conditions. It is designed to comply with applicable UL and FM requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
The Apollo Valves 4ANLF62AC4 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 4" (Flange x Groove). This product serves professionals across marine, plumbing, and HVAC sectors. Apollo products are trusted by engineers and specifiers worldwide. It is designed to comply with applicable UL and NSF requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Part number 4ANLF62CC4 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 6" (Flange x Groove). It is commonly found in fire protection, industrial processing, and HVAC applications. Backed by Apollo's commitment to quality, the 4ANLF62CC4 is built to perform under real-world conditions.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF62EC4 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 8" (Flange x Groove). Typical applications span oil and gas, fire protection, and industrial processing 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 4ANLF62AC6 is a Type 2 Double Check Detector Assembly. Typical applications span commercial mechanical systems, fire protection, and oil and gas environments. The 4ANLF62AC6 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
Part number 4ANLF62AC10 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in fire protection, marine, and commercial mechanical systems applications. The 4ANLF62AC10 reflects Apollo's long-standing reputation for quality and innovation. It is designed to comply with applicable NSF and UL requirements.
Requires Quote
Available for Purchase
Subject to factory lead times
Engineered by Apollo, the 4ANLF62CC6 is a Type 2 Double Check Detector Assembly. It is commonly found in marine, industrial processing, and HVAC applications. 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
Part number 4ANLF62CC10 from Apollo is a Type 2 Double Check Detector Assembly. Typical applications span fire protection, commercial mechanical systems, and plumbing environments. 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 4ANLF62EC6 from Apollo is a Type 2 Double Check Detector Assembly. This product serves professionals across industrial processing, plumbing, and marine 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 4ANLF62EC10 from Apollo is a Type 2 Double Check Detector Assembly. It is commonly found in plumbing, industrial processing, and commercial mechanical systems applications. Backed by Apollo's commitment to quality, the 4ANLF62EC10 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
Engineered by Apollo, the 4ANLF62GE9 is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 10" (2 x Groove). It is commonly found in oil and gas, marine, and plumbing applications. As a leader in valves and flow control, Apollo manufactures every component to exacting standards. This product meets relevant UL and FM standards.
Requires Quote
Available for Purchase
Subject to factory lead times
The 4ANLF629E9 from Apollo is a Type 2 Double Check Detector Assembly. Butterfly Shut-Off Valves, 2-1/2" (2 x Groove). This product serves professionals across fire protection, commercial mechanical systems, and plumbing sectors. The 4ANLF629E9 reflects Apollo's long-standing reputation for quality and innovation. This product meets relevant UL 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.