Circle Valve Technologies Inc.
307 Derstine Ave, Suite 204
Lansdale, PA 19446

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

559B-1M-150 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 150 psig N/A -65 to 275 ºF
559B-1M-2 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 2 psig N/A -65 to 275 ºF
559B-1M-2.5 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 2.5 psig N/A -65 to 275 ºF
559B-1M-20 N/A Popoff 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
559B-1M-25 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 25 psig N/A -65 to 275 ºF
559B-1M-30 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 30 psig N/A -65 to 275 ºF
559B-1M-5 N/A Popoff 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
559B-1M-60 N/A Popoff 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
559B-1M-8 N/A Popoff N/A Brass N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 8 psig N/A -65 to 275 ºF
559B-2M-0.5 N/A Popoff 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
559B-2M-1 N/A Popoff N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 1 psig N/A -65 to 275 ºF
559B-2M-10 N/A Popoff 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
559B-2M-13 N/A Popoff N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 13 psig N/A -65 to 275 ºF
559B-2M-15 N/A Popoff 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
559B-2M-150 N/A Popoff 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
559B-2M-20 N/A Popoff 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
559B-2M-4 N/A Popoff N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 4 psig N/A -65 to 275 ºF
559B-2M-5 N/A Popoff 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
559B-2M-6 N/A Popoff 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
559B-2M-75 N/A Popoff 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
559B-2M-80 N/A Popoff N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 80 psig N/A -65 to 275 ºF
559B-2M-90 N/A Popoff N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 90 psig N/A -65 to 275 ºF
559B-2MP-1 N/A Inline N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male/Female N/A 1 psig N/A -65 to 275 ºF
559B-2MP-1.2 N/A Inline N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male/Female N/A 1.2 psig N/A -65 to 275 ºF
559B-2MP-100 N/A Inline N/A Brass N/A Buna N N/A 1/4 in N/A Pipe Thread Male/Female N/A 100 psig N/A -65 to 275 ºF
Unit of Measure
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