As of January 9, 2025, Evergreen Midwest website has been switched to a new website platform. If you are logging in for the first time on this new platform, you will need to reset your password using the "Forgot Your Password?" link. If you are not currently a Registered Customer, please enter your details here to create a new customer account to receive order acknowledgment emails, shipping confirmations, and the ability to view your account history.

Search
Advanced Search
Shopping Cart 0
$0.00
X
Welcome!

Cryogenic Relief Valves

RegO’s NR Series is designed especially for indoor applications (i.e. laboratories) where relief valve discharge noise is an issue.  PRVs provide excellent flow characteristics with a 50% reduction in outlet noise related to valve relief.
 
• Packaged and cleaned for oxygen service per CGA G-4.1
• Bubble tight at 95% of set pressure
• 100% factory tested
• Repeatable performance
• Temperature range -320° to +165° F
 
The B-19434B Series relief valves are suitable for use with oxygen and non corrosive gases. The C-19434B series relief valves are designed for use in carbon dioxide service.
 
• Both designs permit the valve to open slightly to relieve moderately excessive pressure.
• When the pressure increases beyond a predetermined point, the valve opens to its full discharge capacity in order to quickly reduce excess pressure.
• Pipe-away adapter for venting gas to the outdoors is available.
• A.S.M.E. rated. NB Certified.
• B-19434-B Series are cleaned for use in oxygen per CGA G-4.1.
 

UA3149A Series

“Pop-type” relief valves are designed for use as secondary relief valves in carbon dioxide transports & stationary storage tanks. The relief valves are designed to protect tanks from excessive pressure in event of fire /other emergencies. Small throttling-type primary relief valves must be provided to control boil-off and maintain tank pressures. Provisions must be made to prevent accumulation and build-up of water and foreign material in valves.

  • “Pop-type” design permits relief valve to open slightly to relieve moderately excessive pressures.
  • Relief valve “pops” open to full discharge capacity when pressure exceeds a predetermined point.
  • 100% Factory Tested

 

PRV 9400 Series

These relief valves are specifically designed for thermal safety relief applications and for use with cryogenic liquid containers.

  • All valves are cleaned and packaged for oxygen service per CGA G-4.1.
  • Bubble tight at 95% of set pressure.
  • Easy to read color coded psig / bar labels.
  • Adapters provide standard pipe thread connections for venting gas to the outdoors.
  • Repeatable performance.
  • 100% factory tested.
  • Temperatures Range -320° to +165° F.

 

PRV 19430/29430 Series

 

These relief valves are designed for oxygen / other industrial gases and for cryogenic service. Apply on piping systems, liquid cylinders, or mini-bulk cryogenic containers where an ASME relief valve is desired.

 

• A.S.M.E. rated, National Board Certified.

 

• Bubble tight at 95% of set pressure.

 

• Full flow at 110% at set pressure.

 

• Repeatable performance.

 

• 100% factory tested.

 

• Temperatures Range -320° F to 165° F.

 

• Cleaned and packaged for oxygen service per CGA G-4.1.

 

 

Login to check prices
Filter

Rego “NR” Series Noise Reduction Relief Valves

Showing 81-100 of 145 items

Set Descending Direction
Product SKU DESCRIPTION MANUFACTURER
1 PRV29433F125 3/8 NPT, 125 PSI, Stainless Steel ASME Relief, Fluorosilicone Rego
1 PRV29433T300 3/8 NPT, 300 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29433T350 3/8 NPT, 350 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T150 1/2 NPT, 150 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T200 1/2 NPT, 200 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T230 1/2 NPT, 230 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T350 1/2 NPT, 350 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T375 1/2 NPT, 375 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T400 1/2 NPT, 400 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T450 1/2 NPT, 450 PSI, Stainless Steel ASME Relief, PTFE Rego
1 PRV29434T550 1/2 NPT, 550 PSI, Stainless Steel ASME Relief, PTFE Rego
PRV PRV9432T350 1/4" NPT Settings to 350 PSIG PTFE Seat - PRV9432T350 Rego
1/4" NPT Settings to 350 PSIG PTFE Seat with Pipe Away - PRV9432T350P PRV9432T350P 1/4" NPT Settings to 350 PSIG PTFE Seat with Pipe Away - PRV9432T350P Rego
PRV9432T380 PRV9432T360 1/4" NPT Settings to 350 PSIG PTFE Seat - PRV9432T360 Rego
PRV PRV9432T375 1/4" NPT Settings to 375 PSIG PTFE Seat - PRV9432T375 Rego
PRV9432T380 PRV9432T380 1/4" NPT Settings to 350 PSIG PTFE Seat - PRV9432T380 Rego
PRV PRV9432T400 1/4" NPT Settings to 400 PSIG PTFE Seat - PRV9432T400 Rego
PTFE Seat PRV9432T450 1/4" NPT Settings to 450 PSIG PTFE Seat - PRV9432T450 Rego
PRV PRV9432T500 1/4" NPT Settings to 500 PSIG PTFE Seat - PRV9432T500 Rego
PRV PRV9432T550 1/4" NPT Settings to 550 PSIG PTFE Seat - PRV9432T550 Rego
Page
per page
↑
Back to Top