backflow preventer (EA 1)

Function of the safety valve at normal rate of flow and shutoff when inlet pressure is too low.

description

ordernumber 305

see also:

instant water heater with water volume control

instant water heater with water volume control
Power test

Power test
Pythagoras’ Theorem of

Pythagoras’ Theorem of
thermostatic unit with bimetal control system

thermostatic unit with bimetal control system