The 6 inch Ames Deringer 30G Double Check Detector Valve Assembly (DCDA-II) is engineered to safeguard potable water systems from non-health hazard pollutants caused by backpressure or backsiphonage. This assembly is ideal for fire sprinkler systems requiring monitoring of unauthorized water use, featuring an integrated GPM meter. Constructed with a durable 304 stainless steel housing and dual-action checks for reliable performance across varying flow rates, it includes inline serviceable OS&Y gate valves and tamper-resistant test cocks. Approved for both horizontal and vertical installations, it offers robust protection up to 175 psi.
Help Me Connect
Connections
The 6 inch Deringer 30G DCDA-II features Flanged ANSI B16.1 Class 125 end connections, designed for robust and secure installation into a pipeline system.
It includes inline serviceable AWWA C509 OS&Y (Outside Stem & Yoke) gate valves, which are resiliently seated for reliable shutoff.
The assembly also incorporates flexible groove couplings UL/FM between the body and the gate valves, allowing for easier installation and maintenance.
The 6 inch Ames Deringer™ 30G Double Check Detector Valve Assembly (DCDA-II) prevents non-health hazard pollutants from entering a potable water supply system due to backpressure and backsiphonage conditions. This assembly is primarily used on fire sprinkler systems where monitoring of unauthorized water usage is required, featuring a GPM meter for bypass monitoring.
Key Features
Designed to protect potable water supply from non-health hazard pollutants
Includes inline serviceable OS&Y gate valves for shutoff
Equipped with Dual-Action™ check modules for efficient performance at both low and high flow rates
Constructed with a stainless steel housing for durability
Features a GPM meter for monitoring bypass water usage
Stem includes a tamper switch groove for supervisory switch installation
Utilizes tamper-resistant test cocks for easy maintenance
Approved for both horizontal and vertical applications
Lead Free* bronze bypass components ensure compliance
Specifications
Size: 6 inch
Model: 30G
Valve Housing Material: 304 Stainless Steel
Valve Cover Material: 304 Stainless Steel
SOV Disks Material: EPDM/304SS
SOV Shafts Material: 304 Stainless Steel
Bypass Spring Material: 302 Stainless Steel
SOV Bearings Material: PTFE/Bronze
Non-wetted Bolts Material: Grade 8 Zinc Plated
Check Disks Material: Silicone (NSF)
Wetted Fasteners Material: 18-8 Stainless Steel
Bypass Components Material: Lead Free Bronze
Check Springs Material: 17-7 Stainless Steel
Check Pins Material: 17-7/18-8 Stainless Steel
Check Seats Material: Noryl® Polymer (NSF)
O-rings Material: Buna-N (NSF)
Bypass Internals Material: ABS Polymer (NSF)
Performance & Operation
Maximum Working Pressure: 175 psi (12 bar)
Temperature Range: 33°F - 140°F
Check Module Type: Patented Dual-action™ (poppet at low flow, swing at high flow)
