4 475 RPDA DI BODY N PATTERN GAL MTR BFLY GRV X GRV
Item Number: 4-475DABG
1
/
of
1
Regular price
$18,802.84
Special Order
When Will it Ship:
Contact for Lead Time
Estimated transit time: 2 to 5 Business Days
Brand - Wilkins
Couldn't load pickup availability
- Nominal Size: 4 inch
- Backflow Preventer Type: Reduced Pressure Detector Assembly
- Pattern: N-Pattern for compact installations
- Shut-off Valves: Grooved End Butterfly Valves
- Equipped with integral supervisory switches
- Features a standard gpm meter for bypass flow
- Maximum Working Water Pressure: 175 PSI
- Main Valve Body Material: Ductile Iron
Description
Description
The Zurn 4-inch 475DABG Reduced Pressure Detector Backflow Assembly is engineered for high hazard fire protection systems. This N-Pattern unit prevents backsiphonage and backpressure, safeguarding potable water supplies from contamination. Constructed with a ductile iron body and FDA approved epoxy coating, it offers durability and reliability. Key features include grooved end butterfly valves with integral supervisory switches and a standard gpm meter for detecting leaks and unauthorized water use. It is ASSE 1047, AWWA C550, and NSF/ANSI/CAN 61 compliant, making it a robust solution for maintaining water quality in critical applications.
Help Me Connect
Help Me Connect
Installation & Connections
The Zurn 475DABG Reduced Pressure Detector Backflow Assembly is designed with an N-Pattern configuration, making it suitable for new or retrofit installations in compact spaces. It features grooved end connections, specifically designed for secure attachment to steel piping in accordance with AWWA C606 standards.
- Ensure installation adheres to local codes, manufacturer's instructions, and the latest Uniform Plumbing Code.
- The assembly must be mounted above adequate drains with sufficient side clearance for testing and maintenance.
- It is critical that no part of the unit be submerged during installation or operation.
Collapsible content
Additional Details
The Zurn Model 475DABG is a 4-inch Reduced Pressure Detector Backflow Assembly configured in an N-Pattern for fire protection systems. It provides crucial protection against backsiphonage and backpressure, featuring a metered bypass to identify leaks and unauthorized water usage.
Key Features
- N-Pattern design optimizes installation in compact spaces, suitable for new or retrofit applications.
- Equipped with grooved end butterfly valves that include integral supervisory switches.
- Incorporates a standard gpm meter for flow measurement and leak detection.
- Small footprint facilitates easy integration into fire protection retrofits.
Application
- Designed for installation on water lines within high hazard fire protection systems.
- Protects the potable water supply from contamination by preventing both backsiphonage and backpressure.
- The metered bypass system helps in detecting minor leaks and unauthorized water consumption.
Construction & Materials
- Main Valve Body: Ductile Iron (ASTM A 536 Grade 4)
- Access Covers: Ductile Iron (ASTM A 536 Grade 4)
- Protective Coatings: FDA Approved fusion epoxy finish
- Fasteners: Stainless Steel, 300 Series
- Elastomers: EPDM (FDA approved) and Buna Nitrile (FDA approved)
- Polymers: NORYL™
- Springs: Stainless Steel, 300 series
Performance Specifications
- Maximum Working Water Pressure: 175 PSI
- Maximum Working Water Temperature: 140°F
- Hydrostatic Test Pressure: 350 PSI
Connections
- End Connections: Grooved for steel pipe (AWWA C606)
Specifications
- Nominal Size: 4 inch
- Backflow Preventer Type: Reduced Pressure Detector Assembly
- Pattern: N-Pattern
- Meter Type: gpm meter (standard)
- Shut-off Valves: Grooved End Butterfly Valves with Integral Supervisory Switches
- Main Valve Body Material: Ductile Iron (ASTM A 536 Grade 4)
- Access Cover Material: Ductile Iron (ASTM A 536 Grade 4)
- Coating: FDA Approved Fusion Epoxy Finish
- Fastener Material: Stainless Steel, 300 Series
- Elastomer Material: EPDM (FDA approved), Buna Nitrile (FDA approved)
- Polymer Material: NORYL™
- Spring Material: Stainless Steel, 300 Series
- End Connection Type: Grooved for steel pipe (AWWA C606)
Performance
- Maximum Working Water Pressure: 175 PSI
- Maximum Working Water Temperature: 140°F
- Hydrostatic Test Pressure: 350 PSI
Certificates & Approvals
- ASSE® Listed 1047 (4" thru 8")
- AWWA Compliant C550
- UL® Classified (4" thru 10")
- C-UL® Classified (4" thru 10")
- FM® Approved (4" thru 8")
- NYC MEA 170-02-M VOL 2 (4" thru 8")
- Approved by Foundation for Cross Connection Control and Hydraulic Research (4" thru 8")
- NSF/ANSI/CAN 61 Compliant (0.25% Max. Weighted Average Lead Content)
- Lead Free
FAQs
What is the primary function of the Zurn 475DABG backflow assembly?
The Zurn 475DABG is a Reduced Pressure Detector Backflow Assembly primarily designed to protect potable water supplies in high hazard fire protection systems. It prevents contaminated water from entering the clean supply due to backsiphonage and backpressure.
What type of end connections does this 4-inch model utilize?
This 4-inch model features grooved end connections, specifically designed for secure installation with steel piping in fire protection systems. These connections meet AWWA C606 standards.
How does the metered bypass system work?
The metered bypass system, equipped with a standard gpm meter, continuously monitors small flows through the assembly. This allows for the detection of minor leaks within the system or any unauthorized water usage.
Is this backflow assembly suitable for compact installations?
Yes, the Zurn 475DABG is configured in an N-Pattern design, which provides a compact footprint. This makes it ideal for new installations or retrofits in spaces where room is limited.
What materials are used in the construction of the main body and access covers?
The main valve body and access covers of the Zurn 475DABG are constructed from durable Ductile Iron (ASTM A 536 Grade 4) and are coated with an FDA Approved fusion epoxy finish for enhanced corrosion resistance.
