The product is suitable for liquid, air intake, and hot-gas Pipelines of refrigerators and air-conditioners as well as moisture removing instruments with the following functions:
1. To guarantee refrigerant's right flow direction.
2. To avoid refrigerant's return-concretion from high-temperature evaporators to low-temperature ones.

Product Structure:
The product is composed of valve body, valve seat, valve core And backing seat. The material of valve core is Nylon 66 made by US Dupont or stainless steel.