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

D533T1-6M-30 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Neoprene N/A 3/4 in N/A Pipe Thread Male N/A 30 psig N/A -40 to 300 ºF
D559B-1M-1 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 1 psig N/A -65 to 275 ºF
D559B-1M-10 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 10 psig N/A -65 to 275 ºF
D559B-1M-100 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 100 psig N/A -65 to 275 ºF
D559B-1M-12 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 12 psig N/A -65 to 275 ºF
D559B-1M-130 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 130 psig N/A -65 to 275 ºF
D559B-1M-15 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 15 psig N/A -65 to 275 ºF
D559B-1M-20 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 20 psig N/A -65 to 275 ºF
D559B-1M-5 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 5 psig N/A -65 to 275 ºF
D559B-1M-50 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 50 psig N/A -65 to 275 ºF
D559B-1M-60 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559B-1M-90 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 90 psig N/A -65 to 275 ºF
D559B-1M-95 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 95 psig N/A -65 to 275 ºF
D559B-2M-0.5 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 0.5 psig N/A -65 to 275 ºF
D559B-2M-10 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 10 psig N/A -65 to 275 ºF
D559B-2M-11 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 11 psig N/A -65 to 275 ºF
D559B-2M-120 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 120 psig N/A -65 to 275 ºF
D559B-2M-14 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 14 psig N/A -65 to 275 ºF
D559B-2M-15 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 15 psig N/A -65 to 275 ºF
D559B-2M-150 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 150 psig N/A -65 to 275 ºF
D559B-2M-2.5 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 2.5 psig N/A -65 to 275 ºF
D559B-2M-20 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 20 psig N/A -65 to 275 ºF
D559B-2M-25 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 25 psig N/A -65 to 275 ºF
D559B-2M-35 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 35 psig N/A -65 to 275 ºF
D559B-2M-5 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 5 psig N/A -65 to 275 ºF
Unit of Measure
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