4 310 DCV-DA DI BODY GPM FLG X FLG
Item Number: 4-310DA
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$4,891.02
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Brand - Wilkins
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- Type: Double Check Valve Detector Assembly (DCV-DA)
- Nominal Size: 4 inch
- Body Material: Ductile Iron
- Connection Type: Flanged
- Brand: Zurn Wilkins
- Certified to CSA B64.4
- Certified to ASSE 1015
- Protects against non-health hazard cross-connections
Description
Description
The 4-inch Zurn Wilkins Double Check Valve Detector Assembly (DCV-DA) is designed to protect potable water supplies from non-health hazard cross-connections. Featuring a durable ductile iron body and flanged end connections, this backflow preventer ensures secure installation and long-lasting performance. It includes a bypass detector for leak detection or metering low flows, making it ideal for various commercial and industrial applications requiring protection against backpressure and back-siphonage. This reliable unit is certified to industry standards, including CSA B64.4 and ASSE 1015. Item number 4-310DA.
Help Me Connect
Help Me Connect
Understanding Flanged Connections
- This Zurn Wilkins Double Check Valve Detector Assembly features flanged ends for direct connection to corresponding flanged piping systems.
- Flanged connections typically involve bolting two flanges together with a gasket in between, creating a strong and leak-proof seal.
- Ensure the mating flanges on your piping system match the 4-inch size and bolt pattern of this backflow preventer for proper installation.
- These connections are common in larger diameter commercial and industrial plumbing applications.

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Additional Details
This is a 4-inch Zurn Wilkins Double Check Valve Detector Assembly (DCV-DA) with a ductile iron body and flanged connections, designed for protecting potable water systems from non-health (non-toxic) hazard cross-connections.
Construction
- Features a robust ductile iron body for durability.
- Equipped with two independently operating, spring-loaded check valves for reliable backflow prevention.
- Includes a bypass assembly with a smaller detector check valve, ideal for metering very low flows or detecting leaks.
Connections
- Designed with flanged end connections for secure and straightforward installation into existing pipe systems.
- The flanged design allows for easy removal and maintenance when necessary.
Operation
- Automatically prevents backflow caused by backpressure or back-siphonage.
- Suitable for applications where the potential hazard is classified as non-health hazardous.
Specifications
- Type: Double Check Valve Detector Assembly (DCV-DA)
- Nominal Size: 4 inch
- Body Material: Ductile Iron
- Connection Type: Flanged x Flanged
- Brand: Zurn Wilkins
Certificates & Approvals
- Certified to CSA B64.4
- Certified to ASSE 1015
FAQs
What is a Double Check Valve Detector Assembly (DCV-DA)?
A DCV-DA is a backflow prevention device that features two independently operating check valves in series, along with a bypass line containing a smaller detector check valve. It is designed to protect potable water systems from contamination due to backpressure or back-siphonage from non-health hazard sources.
What does 'DI BODY' signify for this backflow preventer?
The 'DI BODY' specification means the backflow preventer's main casing is constructed from ductile iron. Ductile iron is known for its strength, durability, and resistance to corrosion, making it suitable for long-term use in water system applications.
What type of connections does this 4-inch DCV-DA use?
This device uses 'FLG X FLG', meaning flanged connections on both the inlet and outlet. Flanged connections provide a strong, leak-tight seal and allow for relatively easy installation and removal of the device for maintenance or inspection.
What kind of hazards does a Double Check Valve Detector Assembly protect against?
A DCV-DA is specifically designed to protect against non-health (non-toxic) hazards. This means it prevents the backflow of substances that are objectionable but not toxic, such as those that might affect taste, odor, or color of the potable water.
What certifications does the Zurn Wilkins 4-inch DCV-DA hold?
This 4-inch Zurn Wilkins Double Check Valve Detector Assembly is certified to industry standards including CSA B64.4 and ASSE 1015, ensuring it meets recognized performance and safety requirements for backflow prevention devices.
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