RegO PRV19434T300 1/2″ Brass ASME Cryogenic Relief Valve 300 PSI PTFE O2 Clean

Item Specifics

These specifications are confirmed by RegO’s PRV19430-series documentation and a current distributor listing for the exact PRV19434T300.

Key Features

• Factory set at 300 PSIG
• Heavy-duty brass body
• 1/2″ inlet connection
• PTFE softgoods/seat
• Stainless-steel spring trim
• ASME-rated pressure relief valve
• Drain hole included
• No pipe-away adapter
• Cleaned and packaged for oxygen service per CGA G-4.1
• Designed for oxygen and other compatible industrial gases
• Designed for cryogenic vapor-space service
• Bubble-tight at 95% of set pressure
• Reaches full flow at 110% of set pressure
• Repeatable relief performance
• 100% factory tested
• Compact 2.8″ overall height
• Set-point tolerance is ±3% of set pressure or ±2 PSIG, whichever is greater
• Rated for gas/vapor service only, not liquid service.

Flow Capacity

At a 300 PSIG pressure setting, RegO’s published flow table gives an air-flow capacity of approximately 239 SCFM.

eBay Description

RegO PRV19434T300 1/2″ ASME Cryogenic Gas Pressure Relief Valve – 300 PSIG

The RegO PRV19434T300 is a high-quality brass ASME-rated pressure relief valve engineered for oxygen and other compatible industrial gases in cryogenic vapor-space applications.

This model features a 1/2″ inlet connection, durable brass body, stainless-steel spring trim and PTFE softgoods capable of operating across a broad cryogenic temperature range of -320°F to +165°F.

The valve is factory set at 300 PSIG and provides approximately 239 SCFM air-flow capacity at this setting. It is designed to remain bubble-tight at 95% of set pressure and reach full flow at 110%.

The PRV19434T300 includes a drain hole but does not include a pipe-away adapter. RegO notes that drain-hole configurations cannot be used with a pipe-away adapter.

The valve is 100% factory tested and cleaned/packaged for oxygen service per CGA G-4.1.

Typical Applications

Suitable for properly engineered:

• Cryogenic liquid cylinders
• Mini-bulk cryogenic containers
• Cryogenic piping systems
• Oxygen systems
• Nitrogen systems
• Argon systems
• Other compatible industrial gas systems
• Applications requiring an ASME pressure relief valve

RegO specifically identifies the PRV19430 series for oxygen and other industrial gases and for cryogenic vapor-space applications. 

Product details

Part / SKU	PRV19434T300

Package includes

• RegO PRV19434T300 1/2" Brass ASME Cryogenic Relief Valve 300 PSI PTFE O2 Clean

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.