Double check valve assembly (Backflow preventer DC type)
- Certificate: UL Listed / FM Approved
- Standard: AWWA C510, UL 1469, Lead free as NSF/ANSI/CAN 61
- Connection: Grooved, flanged ANSI B16.1 Class 125, etc.
- Feature: Double check, horizontal or vertical installation
- Temperature: 1°C to 60°C
- W. pressure: 175 psi
- Surface: FBE coating as AWWA C550
Double check valve assembly (Backflow preventer DC type) is an assembly of two check modules. With fail-safe design, it is used in connections between public water supply and fire protection system to fully prevent backflow.
Available size (Source 1 with UL/FM)
Note:
1. DC + IBG means double check modules and two integral grooved butterfly valves. And it is also available with flanged connection through an extra flange adapter, to match ANSI B16.1 Class 125.
2. DC + OSY means double check modules and two OSY gate valves with flanged connection as ANSI B16.1 Class 125.
Available size (Source 2 with UL)
Note:
1. DC + OSY means double check modules and two OSY gate valves with multiple ends types by FxF, GxG, FxG.
2. The material of check module assembly is ductile iron, not SS304.