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
  • D500 Series features cap design
  • MD500 Series features cup design with manual override ring
  • Zero leakage from 0 psi up to 70% of the marked set pressure
Please specify ‘ASME’ when placing your order.
Circle Seal Pressure Relief Valve 500 Series Display Image
Unit of Measure
1 

Item #

O-Ring Material

Body Material

Valve Size

Connections (Inlet)

Operating Temperature

Set Pressure

Shipping Weight

D532N-2M N/A Viton® N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -20 to 350 ºF N/A 15 to 150 psig N/A .08 Pound
D532T1-2M-ASME N/A Viton® N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -20 to 350 ºF N/A 15 to 150 psig N/A .05 Pound
D559N-2M N/A Buna N N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -20 to 250 ºF N/A 15 to 150 psig N/A .08 Pound
D559T1-2M-ASME N/A Buna N N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -20 to 250 ºF N/A 15 to 150 psig N/A .05 Pound
D520N-2M N/A Teflon® N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -100 to 400 ºF N/A 15 to 150 psig N/A .06 Pound
D520T1-2M-ASME N/A Teflon® N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -100 to 400 ºF N/A 15 to 150 psig N/A .05 Pound
D533N-2M N/A Neoprene N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -20 to 240 ºF N/A 15 to 150 psig N/A .08 Pound
D533T1-2M-ASME N/A Neoprene N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -20 to 240 ºF N/A 15 to 150 psig N/A .05 Pound
D524N-2M N/A Silicone N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -65 to 150 ºF N/A 15 to 150 psig N/A .08 Pound
D524T1-2M-ASME N/A Silicone N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -65 to 150 ºF N/A 15 to 150 psig N/A .05 Pound
D562N-2M N/A Ethylene Propylene N/A Naval Brass N/A 1/4 in N/A Male pipe N/A -20 to 250 ºF N/A 15 to 150 psig N/A .08 Pound
D562T1-2M-ASME N/A Ethylene Propylene N/A 316 Stainless Steel N/A 1/4 in N/A Male pipe N/A -20 to 250 ºF N/A 15 to 150 psig N/A .05 Pound
Unit of Measure
1