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.

SKU	DESCRIPTION	MANUFACTURER
B-19434B235	1/2" NPT Set 235 PSIG ASME	Rego
B-19434B250	1/2" NPT Set 250 PSIG ASME	Rego
B-19434B300	1/2" NPT Set 300 PSIG ASME	Rego
B-19434B350	1/2" NPT Set 350 PSIG ASME	Rego
B-19434B375	1/2" NPT Set 375 PSIG ASME	Rego
B9425N050	3/4" NPT Settings to 50 PSIG Fluorosilicone Seat	Rego
B9425N060	3/4" NPT Settings to 60 PSIG Fluorosilicone Seat	Rego
B9425N075	3/4" NPT Settings to 75 PSIG Fluorosilicone Seat	Rego
B9425N100	3/4" NPT Settings to 100 PSIG Fluorosilicone Seat	Rego
B9425N110	3/4" NPT Settings to 110 PSIG Fluorosilicone Seat	Rego
B9425N125	3/4" NPT Settings to 125 PSIG Fluorosilicone Seat	Rego
B9425N150	3/4" NPT Settings to 150 PSIG Fluorosilicone Seat	Rego
B9425N175	3/4" NPT Settings to 175 PSIG Fluorosilicone Seat	Rego
B9425N200	3/4" NPT Settings to 200 PSIG Fluorosilicone Seat	Rego
B9426N075	1" NPT Settings to 75 PSIG Fluorosilicone Seat	Rego
B9426N125	1" NPT Settings to 125 PSIG Fluorosilicone Seat	Rego
B9432N350	1" NPT Settings to 350 PSIG Fluorosilicone Seat	Rego
B9434N450	1" NPT Settings to 450 PSIG Fluorosilicone Seat	Rego
C-19434B235	1/2" NPT Set 235 PSIG CO2 Service ASME	Rego
C-19434B280	1/2" NPT Set 280 PSIG CO2 Service ASME	Rego

Cryogenic Relief Valves

Rego “NR” Series Noise Reduction Relief Valves