Mcalpine CONVALVE In Line Vertical Non Return Valve 19/23mm

In-Line Vertical Non-Return Valve with inlet and outlet connection for 19/23mm pipe
19/23mm Inlet and Outlet
Prevents waste water from sanitary pipework entering a condensing boiler
Receives the discharge from a condensing boiler
Conforms to BS 6798:2014 and Building Regulations Approved Document H