Factory Experience: More than 20 years Quality standard:High-end and Medium. MOQ:50PCS Price:$3.00-$12 Hand valveHand valve is a kind of manual stop valve,used for liquid line,suction line and hot gas line of refrigeration units,Suitable for all kinds of fluorinate refrigerants.Teflon valve board, could be fully closed with minimum torque.With three stainless diaphragm, could prevent leakage ...