4 450 DCDA DI BODY GAL MTR, LESS GATE VALVES
Item Number: 4-450DALBrand - Wilkins
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- Nominal Size: 4 inch
- Body Material: Epoxy-Coated Ductile Iron
- Pattern: N-Pattern
- Bypass System: Metered
- Protects against backsiphonage and backpressure
- Ideal for fire protection applications
- ASSE® Listed, CSA® Certified, AWWA Compliant
- Lead-Free construction
Description
Description
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Connection Information
The Zurn Wilkins 450DA Double Check Detector Backflow Assembly in a 4-inch size is designed for connection into existing water lines in fire protection systems. This specific model is supplied without gate valves, meaning appropriate 4-inch gate valves must be sourced and installed separately to complete the assembly's connections and isolation capabilities.

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Additional Details
The 4-inch Zurn Wilkins 450DA Double Check Detector Backflow Assembly is designed to protect water lines from both backsiphonage and backpressure in low health hazard and fire protection applications. Its n-Pattern shape makes it ideal for new installations and retrofits where space is limited.
Key Features
- Incorporates an innovative metered bypass system for efficient detection of leaks and unauthorized water use.
- Equipped with a Zurn Wilkins Compound Check which ensures reliable performance and low headloss.
- The body is constructed from epoxy-coated ductile iron, providing robust protection against corrosion.
- Its compact n-Pattern design facilitates easy installation in tight spaces and enclosures.
Note: This model is supplied without gate valves. Compatible gate valves must be purchased separately for installation.
Specifications
- Nominal Size: 4 inch
- Body Material: Epoxy-Coated Ductile Iron
- Check Type: Zurn Wilkins Compound Check
- Pattern: N-Pattern
- Application: Low Health Hazard, Fire Protection
- Bypass System: Metered
- Gate Valves: Not Included
Certificates & Approvals
- ASSE® Listed
- CSA® Certified
- AWWA Compliant
- Lead-Free