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
  • Popoff or inline valves
  • Adjustable crack pressure
  • Zero leakage
  • Accurate set pressure
  • Tamper-proof adjustment
  • 100% seat leakage tested
  • PED certifications and CE marking available for most models
Circle Seal Relief Valve 500 Series Popoff
Unit of Measure
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Item #

Variation

Body Material

Seal Material

Valve Size

End Connection

Cracking Pressure

Operating Temperature

D559B-2M-50 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 50 psig N/A -65 to 275 ºF
D559B-2M-6 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 6 psig N/A -65 to 275 ºF
D559B-2M-60 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559B-2M-75 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 75 psig N/A -65 to 275 ºF
D559B-4M-0.5 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 0.5 psig N/A -65 to 275 ºF
D559B-4M-1 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 1 psig N/A -65 to 275 ºF
D559B-4M-100 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 100 psig N/A -65 to 275 ºF
D559B-4M-116 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 116 psig N/A -65 to 275 ºF
D559B-4M-15 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 15 psig N/A -65 to 275 ºF
D559B-4M-150 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 150 psig N/A -65 to 275 ºF
D559B-4M-2.3 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 2.3 psig N/A -65 to 275 ºF
D559B-4M-25 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 25 psig N/A -65 to 275 ºF
D559B-4M-35 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 35 psig N/A -65 to 275 ºF
D559B-4M-40 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 40 psig N/A -65 to 275 ºF
D559B-4M-45 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 45 psig N/A -65 to 275 ºF
D559B-4M-50 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 50 psig N/A -65 to 275 ºF
D559B-4M-6 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 6 psig N/A -65 to 275 ºF
D559B-4M-60 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559B-4M-65 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 65 psig N/A -65 to 275 ºF
D559B-6M-10 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 10 psig N/A -65 to 275 ºF
D559B-6M-3.8 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 3.8 psig N/A -65 to 275 ºF
D559B-6M-4.25 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 4.25 psig N/A -65 to 275 ºF
D559B-8M-10 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1 in N/A Pipe Thread Male N/A 10 psig N/A -65 to 275 ºF
D559B-8M-15 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1 in N/A Pipe Thread Male N/A 15 psig N/A -65 to 275 ºF
D559B-8M-20 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1 in N/A Pipe Thread Male N/A 20 psig N/A -65 to 275 ºF
Unit of Measure
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