The valve is mainly used in air-conditioners, usually matched with capillary tube. For refrigeration, the refrigeration mixture flows through main capillary tube, entering the check valve, and then flows into the evaporator. For heating, it reverses its flow direction. The refrigeration flows through subsidiary capillary tube which is parallel-connected due to the automatic closure of check valve. We mainly manufacture two series of check valve with nylon and steel valve cores, involving varieties of products: &Phi8, &Phi9.52, &Phi12.7, &Phi16, etc. All these check valves have a lower leakage, longer life-span than the same field, and the size of connectors could be decided by our customers.
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