Piston balance design, a single internal design for gas, steam and liquid, to compensate for the impact of varying back pressure on the valve setting pressure. Full nozzle design with O-ring seal as standard.
 
Technical data
Size range:
3/4″×1″ and 1″×1″
Throat diameter area:
0.074 and 0.110in²[0.477 and 0.71cm²]
Connection:
NTP, flange
Temperature range:
-20- +400°F[-28- +204°C]
Setting pressure:
50-1500 psig[3.45-103.44 barg]
Standard:
ASMEVIII