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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

520T1-2MP-100 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 100 psig N/A -100 to 400 ºF
520T1-2MP-125 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 125 psig N/A -100 to 400 ºF
520T1-2MP-140 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 140 psig N/A -100 to 400 ºF
520T1-2MP-150 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 150 psig N/A -100 to 400 ºF
520T1-2MP-20 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 20 psig N/A -100 to 400 ºF
520T1-2MP-25 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 25 psig N/A -100 to 400 ºF
520T1-2MP-3 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 3 psig N/A -100 to 400 ºF
520T1-2MP-5 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 5 psig N/A -100 to 400 ºF
520T1-2MP-50 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 50 psig N/A -100 to 400 ºF
520T1-2MP-60 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 60 psig N/A -100 to 400 ºF
520T1-2MP-75 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/4 in N/A Pipe Thread Male/Female N/A 75 psig N/A -100 to 400 ºF
520T1-4MP-10 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/2 in N/A Pipe Thread Male/Female N/A 10 psig N/A -100 to 400 ºF
520T1-4MP-100 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/2 in N/A Pipe Thread Male/Female N/A 100 psig N/A -100 to 400 ºF
520T1-4MP-50 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/2 in N/A Pipe Thread Male/Female N/A 50 psig N/A -100 to 400 ºF
520T1-4MP-75 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/2 in N/A Pipe Thread Male/Female N/A 75 psig N/A -100 to 400 ºF
520T1-4MP-90 N/A Inline N/A 316 Stainless Steel N/A Teflon®
N/A 1/2 in N/A Pipe Thread Male/Female N/A 90 psig N/A -100 to 400 ºF
520T1-8M-20 N/A Popoff N/A 316 Stainless Steel N/A Teflon®
N/A 1 in N/A Pipe Thread Male N/A 20 psig N/A -100 to 400 ºF
524B-1M-0.6 N/A Popoff N/A Brass N/A Silicone N/A 1/8 in N/A Pipe Thread Male N/A 0.6 psig N/A -70 to 450 ºF
524B-1M-1 N/A Popoff N/A Brass N/A Silicone N/A 1/8 in N/A Pipe Thread Male N/A 1 psig N/A -70 to 450 ºF
524B-1M-31 N/A Popoff N/A Brass N/A Silicone N/A 1/8 in N/A Pipe Thread Male N/A 31 psig N/A -70 to 450 ºF
524B-1M-7 N/A Popoff N/A Brass N/A Silicone N/A 1/8 in N/A Pipe Thread Male N/A 7 psig N/A -70 to 450 ºF
524B-4MP-0.5 N/A Inline N/A Brass N/A Silicone N/A 1/2 in N/A Pipe Thread Male/Female N/A 0.5 psig N/A -70 to 450 ºF
524B-4MP-1 N/A Inline N/A Brass N/A Silicone N/A 1/2 in N/A Pipe Thread Male/Female N/A 1 psig N/A -70 to 450 ºF
524T1-1M-0.5 N/A Popoff N/A 316 Stainless Steel N/A Silicone N/A 1/8 in N/A Pipe Thread Male N/A 0.5 psig N/A -70 to 450 ºF
532B-1M-0.5 N/A Popoff N/A Brass N/A Viton®
N/A 1/8 in N/A Pipe Thread Male N/A 0.5 psig N/A -20 to 400 ºF
Unit of Measure
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