11P64 - ESAB 75 PSI Safety Relief Valve 3/4" NPT

Reliable Over-Pressure Protection for Industrial Gas Systems

The ESAB 11P64 Relief Valve is a precision-engineered safety component designed to protect gas distribution systems, manifolds, and piping networks from dangerous over-pressurization events. In industrial environments where gas pressures must be strictly maintained for both safety and process consistency, a reliable relief valve is the last line of defense. This unit is factory-set to relieve pressure at 75 PSI, making it ideal for low-to-medium pressure delivery systems where downstream equipment is rated for operation below this threshold.

Robust Construction and Compatibility

Manufactured to ESAB's exacting standards, this relief valve features a robust brass body that offers excellent resistance to corrosion and mechanical wear. The choice of material ensures compatibility with a wide range of industrial gases, including inert gases and oxygen (ensure proper cleaning standards are met for specific services). The valve is equipped with a 3/4-inch NPT connection, a standard size for many industrial headers and manifold outlets, allowing for seamless integration into existing infrastructure without the need for complex adapters.

Operational Safety and Compliance

Safety valves like the 11P64 are critical for compliance with industrial safety codes. When system pressure exceeds the 75 PSI set point due to regulator failure or thermal expansion, the valve opens to vent the excess gas, preventing potential ruptures or damage to sensitive flowmeters and welding machines downstream. Once the pressure returns to a safe level, the valve is designed to reseat automatically, minimizing gas loss and allowing operations to resume without manual intervention. Regular inspection and replacement of relief valves are recommended to maintain the highest safety standards in your facility.

Key Applications

• Gas Manifolds: Installed on the low-pressure side of station drops or main headers.
• Pipeline Protection: Protects long runs of piping from thermal expansion over-pressure.
• Regulator Stations: Acts as a safety backup for high-capacity pressure regulators.