Xuan Sefa evolved from the ball valve, the valve just rotate 90 brass ball valve degrees to use the operation and a very small rotational torque can be closed tight. Valve intracavity full equality for the medium brass ball valve provides a little resistance, through the channel. Usually considered the most suitable for direct ball valve opening and closing done, but recently has been the development of ball valve designed to make it to cut expenditure and control traffic purposes. The main characteristics of the ball valve itself is compact and easy to operate and maintenance, applies to water, solvents, acids and natural gas and other general working media, also apply to poor working conditions of media, such as oxygen
1. Valve in the cavity of stagnation abnormal pressure over the spring preload, the seat back from the sphere, to the effect of automatic pressure relief, pressure relief valve seat automatically reset after. 2. When the event of a fire or because of the unusual warming or burning to soften the valve seat ring, in the spring and media pressure, the spherical parts and support ring of metal on metal spheres forming contacts, to temporarily seal, to prevent the fire Further expand in line with API 6FA requirements. 3. Gland fill positions adopted PTFR packing and sealing 0 double-ring seals, especially applicable to the medium gas, fill with fill-in, may at any time using a brass ball valve new type of low-friction system of self-lubricating SF sliding bushings to reduce operation Torque.
brass ball valve |
