Deringer 40/40G
Lightweight Stainless Steel Reduced Pressure Zone Assembly Backflow Preventers with Integral Butterfly or OSY Shutoffs
Deringer 40/40G
Lightweight Stainless Steel Reduced Pressure Zone Assembly Backflow Preventers with Integral Butterfly or OSY Shutoffs
Features
- Integral shutoffs for shorter lay length and lightweight construction (Deringer 40 only)
- Bow-seal™ full access cover for lower weight and easy access to valve internals
- Dual-action check module for low- and high-flow performance
- Optional flood sensor connection kit to detect flowing discharge from the relief valve; provides dry contact output for BMS integration
- Tamper-resistant test cocks
- Prewired supervisory switches (Deringer 40 only)
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Learn more about Nexa
Ames Deringer™ 40 and 40G Reduced Pressure Zone Assemblies are designed to prevent hazardous contaminants and non-health hazard pollutants from entering the potable water supply system caused by backpressure and/or backsiphonage conditions.
Deringer 40 features integral Eccentric-seal™ butterfly shutoff valves for a short lay length, and True-Seal™ and Dual-action™ checks for high performance at low- and high-flow rates. Deringer 40G also features Dual-action checks, but with OS&Y shutoff valves. Either may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum working pressure: 175 psi (12 bar).
An optional flood sensor connection kit is available to detect flowing discharge from the relief valve. The sensor and activation module install externally and do not affect assembly performance for certifications. When a qualifying discharge occurs, the sensor energizes a relay that signals a flood condition to the building management system.
Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. Some certification agencies allow you to search by product name and brand.
Literature
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Select options below to identify the UPC, Order Code, and Repair Kit for a specific Deringer 40/40G