in-line breather valve

In-Line Breather Valve (PVRV)

Vital in-line safety valves (PVRV) designed to protect tanks, vessels, and pipelines from structural damage. Automatically regulates internal pressure by releasing excess pressure (out-breathing) and allowing inflow (in-breathing) to prevent vacuum collapse. Designed to API 2000 and ISO 28300 standards.

Category:

Description

Precision Pressure Control for Closed Systems

An In-Line Breather Valve, functioning as an in-line Pressure/Vacuum Relief Valve (PVRV), is a vital safety component engineered to protect tanks, vessels, and closed piping systems from severe structural damage caused by internal pressure imbalances.

Automated Pressure Equilibrium: Designed for seamless integration within piping networks, this valve automatically regulates the system’s internal atmosphere. It precisely releases excess internal pressure (out-breathing) and permits controlled air or gas inflow (in-breathing) to prevent vacuum-induced collapse. This dual action ensures continuous pressure equilibrium, whether venting to the atmosphere or into a closed vapor recovery system.

Design & Standards: Manufactured strictly in accordance with API 2000 and ISO 28300 standards, these valves are available in both weight-loaded and spring-loaded configurations to accommodate a wide range of precise operational pressure settings.

Additional information

Nominal Size

NPS 2” ~ 12”
Outlet Pressure (Venting)

2 mbar ~ 69 mbar (Weight Loaded), 26 mbar ~ 1034 mbar (Spring Loaded)
Inlet Pressure (Vacuum)

2 mbar ~ 43 mbar (Weight Loaded), 43 mbar ~ 48 mbar (Spring Loaded)
Design Standard

API 2000 / ISO 28300
Body Material Grade

A216 WCB, A351 CF3/M, A351 CF8/M (Other materials on demand)
Internal Parts Material

A182 F304, A182 F316/L (Other materials on demand)

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