The Graco 800742 Thermal Relief Valve Kit 3/8 in is a safety component designed to protect fluid systems from pressure buildup caused by thermal expansion. It helps prevent damage to pumps, hoses, and fittings.
The Graco 800742 Thermal Relief Valve Kit 3/8 in is designed for fluid handling and lubrication systems that use 3/8-inch outlet lines. It helps protect pumps, hoses, and seals from pressure buildup caused by thermal expansion.
The Graco 800742 Thermal Relief Valve Kit is a genuine pressure protection component designed for fluid pumping and lubrication applications. Installed in a fluid line, this valve automatically releases excess pressure when fluid expands due to heat. This prevents potential damage to pumps, hoses, seals, and other system components.
With a 3/8 inch connection, the valve is commonly used in closed fluid circuits, oil transfer systems, and industrial lubrication setups where pressure can build up during idle or bypass operation. The kit ensures that the system maintains safe operating pressure and helps extend the service life of connected equipment.
| Feature | Description |
|---|---|
| Part Number | 800742 |
| Product Type | Thermal Relief Valve Kit |
| Connection Size | 3/8 inch |
| Function | Releases excess pressure caused by thermal expansion |
| Purpose | Protects pumps, hoses, and seals from over-pressure damage |
| Application | Fluid transfer, oil circulation, and lubrication systems |
In fluid handling systems, pressure can increase when liquid is trapped in a line and exposed to heat. Without a relief mechanism, this pressure buildup may damage hoses, fittings, and pump components. The Graco 800742 Thermal Relief Valve Kit 3/8 in provides an automatic safety solution by opening at a preset pressure and releasing excess fluid to protect the entire system.
This makes it a reliable component for industrial environments where fluid lines may remain pressurized for long periods or experience temperature changes.
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