Compressor Pressure Relief Valve for 3-8 | Auto Air Conditioning Compressor Safety Part

"**What this part does**

Vents excess pressure from the compressor if the discharge pressure becomes dangerously high, protecting the compressor, hoses and the rest of the system from bursting.

**Where it is installed**

The Compressor Pressure Relief Valve (fine thread) is located screwed into the compressor housing or cylinder head, connecting the discharge (high-pressure) side to the outside.

**Symptoms of a failed relief valve**

A worn or damaged relief valve shows up as one or more of these symptoms:

- A sudden loss of refrigerant through the valve, often with an oil mist thrown out
- System pressure never builds up again and there is no cooling after a pressure spike
- Valve stuck open — the system leaks continuously and loses refrigerant
- Valve stuck closed — no safety protection left, risking hose or compressor rupture
- Oil weeping around the valve thread

**When to replace**

Replace the valve if it has vented, if it is leaking, or after any severe over-pressure event. Always find and fix the cause of the over-pressure first (overcharge, fan fault, blocked condenser).

**Why choose this part**

Supplied as a direct replacement for the original part. Always compare the dimensions, hole layout and finish with your original part before ordering.

**Ordering note**

Relief valves are matched by thread size, opening pressure and body style. Confirm the thread and the opening pressure match the original valve.
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