Sanhua has a patented 'Fly-Wing' slide design, which is mainly used in low-temperature heat pump heating system, can effectively prevent the 4-way valve from sufferring liquid hammer during defrosting.

Sanhua's patented "Fly-Wing" slider 4-way reversing valve is mainly used in low temperature heat pump heating, the 4-way reversing valve is often damaged by liquid during or after defrosting, and the slider design equipped with fly-wings can effectively prevent the 4-way reversing valve from sufferring liquid hammer.