Deringer 30/30G
Lightweight Stainless Steel Double Check Detector Type II Assembly Backflow Preventers with Integral Butterfly or OSY Shutoffs
Ames Deringer™ 30 and 30G Double Check Detector Type II Assemblies are designed to prevent non-health hazard pollutants from entering the potable water supply system caused by backpressure and/or backsiphonage conditions. Deringer 30 features integral Eccentric-seal™ butterfly shutoff valves for a short lay length, and Dual-action™ checks for high performance at low- and high-flow rates. Deringer 30G also features Dual-action checks, but with OS&Y shutoff valves.The Type II bypass is used to monitor unauthorized water usage and is primarily required on fire sprinkler systems.
Either may be installed under continuous pressure service to protect against both backpressure and backsiphonage. Maximum working pressure: 175psi (12 bar).
Features
- Integral shutoffs for shorter lay length and lightweight construction (Deringer 30 only)
- Bow-seal™ full access cover for lower weight and easy access to valve internals
- Dual-action check modules for low- and high-flow performance
- Tamper-resistant test cocks
- Type II bypass for lower weight and simplified testing
Literature
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- Brochure - Ames Flow Control For Fire Protection
- Brochure - Deringer Series For Fire Protection
- Maintenance Manual - Deringer Gear Box Replacement
- Maintenance Manual - Deringer Gear Box Wiring
- Maintenance Manual - Deringer Indicator Flag
- Maintenance Manual - Deringer Models 30/50 Only - Bypass Testing USC - Sizes 2 1/2-4 IN
- Maintenance Manual - Deringer Tamper Switch
- Maintenance Manual - For Deringer Models 20/30 - Sizes 6 and 8 IN, For Models 20X/30X - Sizes 4 and 6 IN
- Maintenance Manual - For Deringer Models 20/30 Only - Sizes 2 1/2-4 IN
- Maintenance Manual - For Deringer Models 20G/30G - Sizes 6 and 8 IN, For Models 20GX/30GX - Sizes 4 and 6 IN
- Maintenance Manual - For Deringer Models 20G/30G Only - Sizes 2 1/2-4 IN
- Specification Sheet - Deringer 30
- Specification Sheet - Deringer 30G
- User Guide - For All Deringer Series Valves
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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. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:
| ASSE | CSA | FM Approvals | NSF |
| UL | ULC | USC | WQA |