Circle Valve Technologies Inc.
1533 Gehman Road
Harleysville, PA 19438

Toll Free:800-645-6733
Phone: 267-933-6300
Fax: 267-933-6305
Email: [email protected]
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Features
  • Very accurate cracking pressure
  • Zero leakage up to 95% of cracking pressure
  • 100% seat leakage tested
  • Tamper-proof adjustment
  • PED certifications and CE marking available for most models
HP500 Series Relief Valve
Unit of Measure
Items Circle Seal Pressure Relief Valve HP500 Series
HP532B-2M
High Pressure Popoff Relief Valves 		Circle Seal Pressure Relief Valve HP500 Series
HP532B-2MP
High Pressure Inline Relief Valves 		Circle Seal Pressure Relief Valve HP500 Series
HP532B-4M
High Pressure Popoff Relief Valves 		HP500 Series Relief Valve
HP532B-4MP
High Pressure Inline Relief Valves 		Circle Seal Pressure Relief Valve HP500 Series
HP559B-2M
High Pressure Popoff Relief Valves
Series N/A HP500
Type N/A Relief Valve
Body Material N/A Brass
O-Ring Material N/A Viton® N/A Viton® N/A Viton® N/A Viton® N/A Buna N
Valve Size N/A 1/4 in N/A 1/4 in N/A 1/2 in N/A 1/2 in N/A 1/4 in
End Connections (Inlet/Outlet) N/A Popoff male pipe N/A Inline male pipe by female pipe N/A Popoff male pipe N/A Inline male pipe by female pipe N/A Popoff male pipe
Operating Pressure N/A 150 to 575 psig10 to 40 bar N/A 150 to 575 psig10 to 40 bar N/A 150 to 450 psig10 to 31 bar N/A 150 to 450 psig10 to 31 bar N/A 150 to 575 psig10 to 40 bar
Cracking Pressure Tolerance N/A ±5%
Operating Temperature N/A -20 to 400 ºF N/A -20 to 400 ºF N/A -20 to 400 ºF N/A -20 to 400 ºF N/A -65 to 275 ºF
Spring Material N/A 17-7 PH Stainless Steel
Dim. A N/A 1.17 in N/A 1.92 in N/A 1.91 in N/A 2.63 in N/A 1.17 in
Hex N/A 5/8 in N/A 3/4 in N/A 1 in N/A 1.125 in N/A 5/8 in
Weight N/A .06 lbs N/A .16 lbs N/A .27 lbs N/A .6 lbs N/A .06 lbs
Optional Body Material N/A 316 Stainless Steel Brass
Optional End Connections N/A 1/4" Male BSPT x 1/4" Female BSPT M - Male NPT