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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Project Check Valves
Unit of Measure
Items Circle Seal Check Valve
P238-180
Circle Seal 1/2" Brass Check Valve 		Circle Seal Pressure Relief Valve 5100 Series
P20-485
Circle Seal 1/4" Brass Relief Valve
Type N/A Check Valve N/A Relief Valve
Series N/A 200 N/A 5100
Body Style N/A In-Line
Body Material N/A Brass
Connection Size 1 N/A 1/2 in N/A 1/4 in
Connection Type 1 N/A Female NPT
Connection Size 2 N/A 1/2 in N/A 1/4 in
Connection Type 2 N/A Female NPT N/A Male NPT
Operating Pressure N/A 0 to 3000 bar N/A 0 to 400 psig
Cracking Pressure N/A 2 to 4 psig N/A 235 psig
Operating Temperature N/A -100 to 400 ºF N/A 0 to 120 ºF
Seat Material N/A Teflon®
N/A Buna N
Seal Material N/A Teflon®
Flow Coefficient (Cv) N/A 6.6 N/A
Max. Operating Pressure N/A 3000 psig N/A 400 psig
Special Characteristics N/A Oxygen Clean N/A
Manufacturer N/A Circle Seal Controls