KIWA REG4 Certified
Designed in accordance with BS EN 1717:2000 ‘Protection against pollution of potable water in water installations and the general requirements of devices to prevent pollution by backflow.’
Body and Cover: Dezincification Resistant Alloy
½” and ¾” – DZR CW724R Brass to EN 12165
1” and 1 ¼” – DZR CB752S Brass to EN 1982
1½”& 2” – CB499K Bronze to EN 1982
DN50 – DN100 – CB499K Bronze to EN 1982
Check Valve Spindle: Stainless Steel EN 10088-3 (AISI 303)
Discharge Valve Seat: Dezincification Resistant Alloy
½” – 1 ¼” – DZR CW724R Brass to EN 12165
1½”& 2” – Stainless Steel to EN 10088-3 (AISI 303)
DN50 – DN100 – Stainless Steel to EN 10088-3 (AISI 303)
Springs: Stainless Steel EN 10270-3 (AISI 302)
Diaphragm NBR
Hydraulic Seals: NBR
