Valves are shared. The cavities above the valves (over piston cavities) of the intake valve and the check valve are interconnected by means of overflow pipes.
Drive type — automatic.
Sealing surface – corrosion-resistant steel.
Tightness class – "С" according to ДСТУ EN 12266-1 (GOST Р 54808-2011).
Connection to pipeline – by welding.
Operating medium: high pressure heater feed water.
Operating medium flow – according to the arrow of the pic.
Installation position: horizontal pipeline areas – with bonnet up.
Ambient class – У3 according to GOST 15150.