| Model "PR"
Pressure Relief Valve
Model "PR" pressure relief valves are used in systems to maintain a desired pressure level. Please note that they are proportional relief valves and not "pop" type safety valves. Not preset at the factory, but easily field adjusted with knurled adjustment screw and locked with jam nut.
Three sizes are offered, 1/4" NPT (PR25), 3/8" NPT (PR38), and 3/4" NPT (PR75).
All brass construction, with stainless springs. PR25 uses stainless steel ball as poppet, while PR38 and PR75 poppets are nylon with nitrile seals. Max. temperature 250° F
|
Part Number |
NPT |
Available Cracking Pressure Range |
Flow at 5 PSI past Crack Pressure |
|
PR25 |
1/4" |
0-20psi Standard |
2 SCFM |
|
10-60psi |
2 SCFM |
|
50-125psi |
2 SCFM |
|
100-200psi |
2 SCFM |
|
PR38 |
3/8" |
0-20psi |
5 SCFM |
|
PR75 |
3/4" |
0-20psi |
10 SCFM |
|
PR10 |
1" |
0-20psi |
10 SCFM | |
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