Non return insert check valve WM

WM insert check valves are compliant with the regulation of NF Antipollution brand.
According to the NF EN 1717, these EB type check valves, are incorporated in a device, and guarantee the protection of drinking water against a risk of pollution from a fluid of category 2.
• Minimum head loss
• Noiseless operation due to a split obturator
• Does not generate hammering
• Meets the requirements of all europeans aprovals
• Axial guidance oburator with return spring
• Excellent water tightness at high or low back pressure ensured by a designed lip-seal

Main application: water meter
Can also be fitted in any application which need a drinking water network protection; suitable with the design of the product.
Ex: sanitary taps...

Approvals: ACS, NF, KIWA, Belgaqua, WRAS, DVGW, NSF, VA
Ask a question about this item

Technical Features

Working pressure: 10 bar
Working condition: -10°C to 65°C. Maxi 85°C 1h/day
Body: POM
Obturator: POM
Seal: EPDM
Spring: Stainless steel

Type DN
PFA (bar)
Part number Weight (kg)
WM015 15 1/2"
4.3 2224138 0,004
WM020 20 3/4"
2224137 0,007
WM025 25 1"
10 4.3 2224139 0,017
WM040 40 1"1/2
10 4.3 2224140 0,035