Low pressure back pressure valve
■ Controls up to 25 psi. Automatically maintains desired pressure in a line or system by discharging excess pressure to the atmosphere or to a lower pressure system.
■ All bronze, neoprene-nylon diaphragm, composition disc, sensitive adjusting spring.
■ On installation, a “T” is placed in the inlet line and a sensing connection is run from it to the top of the valve.