Air Conditioning Valve Core M10x075 - 6-25-M10X075
- Valve core for car air conditioner. High pressure. 10mm.
AC Valve Core M10x0.75
10 mm high-pressure valve core | R134a refrigerant | Seal included | Sold per piece
The M10x0.75 valve core is a high-pressure valve used in automotive air conditioning systems running on R134a refrigerant. It's the part that physically holds refrigerant inside the system and allows it to be safely connected to a recovery/recharge station — its condition has a direct bearing on how airtight the whole system stays.
What this valve core is for
The valve core fits into the AC system's service port and is what keeps refrigerant sealed inside the system between service visits. The M10x0.75 designation identifies the thread of the high-pressure port this particular core is built for — getting the thread size right matters, since low- and high-pressure ports use different dimensions specifically to prevent a recovery station from being connected to the wrong side of the system by mistake. The included seal closes off the connection and prevents the slow micro-leaks of refrigerant that are hard to spot by eye but gradually reduce cooling performance over time.
Design and construction
Accurate fit in the service port.
Supports correct installation in the high-pressure port.
Prevents refrigerant micro-leaks.
Materials matched to this refrigerant.
Dimensions and technical data
| Parameter | Value |
|---|---|
| Product code | 6-25-M10X075 |
| Thread | M10x0.75 |
| System side | High pressure |
| Refrigerant | R134a |
| Seal | Included |
| Application | Automotive air conditioning systems |
| Sold as | 1 piece |
Applications
- Workshops servicing and repairing automotive air conditioning
- Replacing a damaged or leaking valve core without disturbing the rest of the system
- AC systems running on R134a refrigerant
- Routine core replacement during AC system servicing
Frequently asked questions
What does the M10x0.75 designation mean?
It identifies the thread of the service port the core is installed into — M10 is the 10 mm nominal diameter, and 0.75 is the thread pitch in millimetres. High- and low-pressure ports use different thread sizes specifically to make it physically impossible to connect a recovery station to the wrong side of the system by mistake.
Does this core fit R1234yf systems?
Don't assume interchangeability without checking — valve cores are selected for a specific refrigerant, since the seal material has to hold up against contact with that refrigerant and the oil used in the system. This core is designed for R134a systems.
Why is replacing just the valve core often enough?
The valve core is the most common source of leaks at a service port, so replacing it clears up the leak without needing to remove the whole port or other system components — provided, of course, that the core itself, rather than the port or its seal, is actually the source of the problem.
Does installation need any special tools?
Yes, a proper valve core removal tool is needed to safely unscrew and install the core, and the whole procedure should be preceded by recovering the refrigerant with a recovery station.