

NIAGARA Double Check Valve – Model CS2W / CS2CW
Double check valve designed to prevent backflow and contamination in potable water systems. WRAS approved, made from DZR brass, and ideal for domestic, public, and commercial installations.
Technical Data | |
---|---|
End Connections | Compression to BS EN 1252-2, Female taper threaded to BS EN 10226-2 |
Material: | DZR Brass |
Pressure Rating: | PN16 |
Size: | Fig. 250CW: 15mm to 28mm, Fig. 250W: 1/2" to 2" |

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- Description
- Additional information
Description
NIAGARA Double Check Valve – Model CS2W / CS2CW
The CS2W and CS2CW models are double check valves engineered to protect water supplies by preventing backflow and back siphonage contamination.
They are WRAS approved for use with wholesome (potable) water up to 85°C, making them suitable for both residential and commercial buildings.
The compression version is supplied with ends complying with BS EN 1252-2, suitable for use with BS EN 1057 R250 (half-hard) copper tubes or female taper threads manufactured to BS EN 10226-2 standards.
These valves have a shell pressure rating of PN16, with a maximum working pressure of 10 bar, ensuring safe and efficient operation.
They are also compliant with BS EN 13959 standards for anti-pollution check valves (Family E type D).
Technical Specifications:
-
Size:
-
Fig. 250W: 1/2″ to 2″
-
Fig. 250CW: 15mm to 28mm
-
-
Pressure Rating: PN16
-
End Connections:
-
Compression to BS EN 1252-2
-
Female taper threaded to BS EN 10226-2
-
-
Material: DZR Brass
Additional information
Size: | Fig. 250CW: 15mm to 28mm, Fig. 250W: 1/2" to 2" |
---|---|
Pressure Rating: | PN16 |
End Connections | Compression to BS EN 1252-2, Female taper threaded to BS EN 10226-2 |
Material: | DZR Brass |
Overview
NIAGARA Double Check Valve – Model CS2W / CS2CW
The CS2W and CS2CW models are double check valves engineered to protect water supplies by preventing backflow and back siphonage contamination.
They are WRAS approved for use with wholesome (potable) water up to 85°C, making them suitable for both residential and commercial buildings.
The compression version is supplied with ends complying with BS EN 1252-2, suitable for use with BS EN 1057 R250 (half-hard) copper tubes or female taper threads manufactured to BS EN 10226-2 standards.
These valves have a shell pressure rating of PN16, with a maximum working pressure of 10 bar, ensuring safe and efficient operation.
They are also compliant with BS EN 13959 standards for anti-pollution check valves (Family E type D).
Technical Specifications:
-
Size:
-
Fig. 250W: 1/2″ to 2″
-
Fig. 250CW: 15mm to 28mm
-
-
Pressure Rating: PN16
-
End Connections:
-
Compression to BS EN 1252-2
-
Female taper threaded to BS EN 10226-2
-
-
Material: DZR Brass
Details
specifications | |
---|---|
End Connections | Compression to BS EN 1252-2, Female taper threaded to BS EN 10226-2 |
Material: | DZR Brass |
Pressure Rating: | PN16 |
Size: | Fig. 250CW: 15mm to 28mm, Fig. 250W: 1/2" to 2" |
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