Features: The ball valve is made of fine brass,durable and has long service life. High pressure endurance.The ball valve can withstand high pressure. Can be used for household air conditioning pressure-preserving after pumping out pressure,automotive air conditioning adding pressure and pressure-preserving,air conditioning vacuum gauge accurate pressure-preserving. Eliminate the danger of leakage of the fluoride tube, and insure more accurate pressure. The valve is stable and has great performance while using. Specification: Material:Brass Internal Thread: G1/4'' Switch Pattern:Knob Package List: 1*Valve Package List 1The ball valve is made of fine brass,durable and has long service life. 2High pressure endurance.The ball valve can withstand high pressure. 3Can be used for household air conditioning pressure-preserving after pumping out pressure,automotive air conditioning adding pressure and pressure-preserving,air conditioning vacuum gauge accurate pressure-preserving. 4Eliminate the danger of leakage of the fluoride tube, and insure more accurate pressure. 5The valve is stable and has great performance while using.