Campbell rv3tss Pressure Relief Valve 75 Psi 3/4 Inch

Product Description

The CAMPBELL rv3tss is a 3/4-inch stainless steel pressure relief valve rated at 75 psi, designed to protect plumbing and hydronic heating systems from overpressure conditions. When system pressure exceeds the 75 psi set point, the valve opens automatically to release excess pressure, then reseats when pressure drops back to safe operating range. The stainless steel body resists corrosion in wet and chemically treated water systems, making it suitable for demanding residential and light commercial installations. Licensed plumbers and mechanical contractors are the primary installers of this type of valve.

This relief valve is suited for residential and light commercial plumbing systems, water heaters, and closed-loop hydronic heating applications where automatic overpressure protection is required. It is a direct-acting valve that requires no external power source to operate. The 3/4-inch nominal port size accommodates standard residential supply line sizing, and the stainless steel construction handles the temperature and chemical exposure typical of potable water and hydronic fluid systems.

Key Features

• 75 psi pressure relief set point protects against overpressure damage
• Stainless steel body for corrosion resistance in wet and treated-water environments
• 3/4-inch nominal connection fits standard residential plumbing supply lines
• Automatic operation requires no external power or manual actuation
• Compact envelope: 1.9 inches long, 3.05 inches wide, 1.55 inches tall

Compatibility

Designed as an OEM-style replacement for 3/4-inch pressure relief valves in residential and light commercial plumbing and hydronic heating systems rated at 75 psi.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and IAPMO or IPC requirements. Shut off the water supply and relieve system pressure fully before removing the existing valve or installing this unit. The discharge port must be piped to a safe drain location per code — never capped or plugged. Verify that the 75 psi rating is appropriate for the system before installation.