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
1 2 3 4 

Item #

Variation

Body Material

Seal Material

Valve Size

End Connection

Cracking Pressure

Operating Temperature

D532B-2M-17 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 17 psig N/A -20 to 400 ºF
D532B-2M-20 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 20 psig N/A -20 to 400 ºF
D532B-2M-60 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 60 psig N/A -20 to 400 ºF
D532B-3M-150 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/8 in N/A Pipe Thread Male N/A 150 psig N/A -20 to 400 ºF
D532B-3M-2 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/8 in N/A Pipe Thread Male N/A 2 psig N/A -20 to 400 ºF
D532B-3M-4 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/8 in N/A Pipe Thread Male N/A 4 psig N/A -20 to 400 ºF
D532B-4M-150 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1/2 in N/A Pipe Thread Male N/A 150 psig N/A -20 to 400 ºF
D532B-6M-150 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/4 in N/A Pipe Thread Male N/A 150 psig N/A -20 to 400 ºF
D532B-6M-4 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/4 in N/A Pipe Thread Male N/A 4 psig N/A -20 to 400 ºF
D532B-6M-5 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 3/4 in N/A Pipe Thread Male N/A 5 psig N/A -20 to 400 ºF
D532B-8M-2 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1 in N/A Pipe Thread Male N/A 2 psig N/A -20 to 400 ºF
D532B-8M-75 N/A Popoff with deflector cap N/A Brass N/A Viton®
N/A 1 in N/A Pipe Thread Male N/A 75 psig N/A -20 to 400 ºF
D532T1-1M-0.5 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/8 in N/A Pipe Thread Male N/A 0.5 psig N/A -20 to 400 ºF
D532T1-2M-10 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 10 psig N/A -20 to 400 ºF
D532T1-2M-100 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 100 psig N/A -20 to 400 ºF
D532T1-2M-30 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 30 psig N/A -20 to 400 ºF
D532T1-2M-60 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 60 psig N/A -20 to 400 ºF
D532T1-2M-90 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/4 in N/A Pipe Thread Male N/A 90 psig N/A -20 to 400 ºF
D532T1-4M-10 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/2 in N/A Pipe Thread Male N/A 10 psig N/A -20 to 400 ºF
D532T1-4M-12 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/2 in N/A Pipe Thread Male N/A 12 psig N/A -20 to 400 ºF
D532T1-4M-15 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/2 in N/A Pipe Thread Male N/A 15 psig N/A -20 to 400 ºF
D532T1-4M-2 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 1/2 in N/A Pipe Thread Male N/A 2 psig N/A -20 to 400 ºF
D532T1-6M-5 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Viton®
N/A 3/4 in N/A Pipe Thread Male N/A 5 psig N/A -20 to 400 ºF
D533B-8M-2 N/A Popoff with deflector cap N/A Brass N/A Neoprene N/A 1 in N/A Pipe Thread Male N/A 2 psig N/A -40 to 300 ºF
D533T1-1M-2 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Neoprene N/A 1/8 in N/A Pipe Thread Male N/A 2 psig N/A -40 to 300 ºF
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
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
D559B-8M-60 N/A Popoff with deflector cap N/A Brass N/A Buna N N/A 1 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559T1-1M-0.5 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 0.5 psig N/A -65 to 275 ºF
D559T1-1M-15 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 15 psig N/A -65 to 275 ºF
D559T1-1M-30 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 30 psig N/A -65 to 275 ºF
D559T1-1M-5 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 5 psig N/A -65 to 275 ºF
D559T1-1M-50 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 50 psig N/A -65 to 275 ºF
D559T1-1M-60 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559T1-1M-80 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/8 in N/A Pipe Thread Male N/A 80 psig N/A -65 to 275 ºF
D559T1-2M-1 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 1 psig N/A -65 to 275 ºF
D559T1-2M-10 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 10 psig N/A -65 to 275 ºF
D559T1-2M-100 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 100 psig N/A -65 to 275 ºF
D559T1-2M-115 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 115 psig N/A -65 to 275 ºF
D559T1-2M-12 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 12 psig N/A -65 to 275 ºF
D559T1-2M-15 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 15 psig N/A -65 to 275 ºF
D559T1-2M-20 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 20 psig N/A -65 to 275 ºF
D559T1-2M-3 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 3 psig N/A -65 to 275 ºF
D559T1-2M-30 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 30 psig N/A -65 to 275 ºF
D559T1-2M-35 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 35 psig N/A -65 to 275 ºF
D559T1-2M-60 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 60 psig N/A -65 to 275 ºF
D559T1-2M-90 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 1/4 in N/A Pipe Thread Male N/A 90 psig N/A -65 to 275 ºF
D559T1-6M-20 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 20 psig N/A -65 to 275 ºF
D559T1-6M-27 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 27 psig N/A -65 to 275 ºF
D559T1-6M-4 N/A Popoff with deflector cap N/A 316 Stainless Steel N/A Buna N N/A 3/4 in N/A Pipe Thread Male N/A 4 psig N/A -65 to 275 ºF
559B-4M-2.2 N/A Popoff N/A Brass N/A Buna N N/A 1/2 in N/A Pipe Thread Male N/A 2.2 psig N/A -65 to 275 ºF
559B-4M-2.3 N/A Popoff 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
Unit of Measure
1 2 3 4