Composition and Function:
The original factory stop valve kit usually includes the valve body, valve core (such as a valve disc or piston structure), spring, seal (O-ring or valve seat), and installation accessories. Its core function is:
To allow only compressed air to flow unidirectionally from the compressor outlet to the storage tank or downstream pipelines;
To automatically close when the machine stops to prevent compressed air in the pipeline from flowing back to the compressor main unit, avoiding reverse rotation of the main unit and causing damage;
To maintain stable system pressure and reduce pressure loss after shutdown.
Advantages of the original kit:
The original stop valve kit is designed for the operation of air compressors and has the following characteristics:
The valve body is made of materials that are resistant to high pressure and corrosion (such as cast iron or high-strength alloy), suitable for the system's working pressure (usually 10-16 bar) and temperature;
The sealing surfaces of the valve core and valve seat are precisely machined to ensure no leakage during closure;
The spring elasticity is matched to the model requirements, ensuring smooth opening under low pressure difference and quick closure when the machine stops;
The overall size is fully compatible with the air compressor pipeline system, and the installation interfaces (threads or flanges) are precisely matched.
Key points for model matching:
For different series (such as GA, G, ZR, etc.) and displacement of air compressors, the diameter, pressure rating, and installation method of the stop valve are different. When purchasing, please provide:
The specific model of the air compressor (such as GA30, GA75VSD+), and the factory serial number;
The installation position of the stop valve (such as the outlet of the oil-gas separator, the inlet of the storage tank);
The part number of the old kit (usually marked on the valve body).
