Food Grade Sanitary Quick-release Ball Valves Should Also Be Cleaned Regularly To Prevent Internal Residues.
Sanitary Ball Valve Also pay attention to regular cleaning of internal residues
Since ball valves usually use rubber, nylon and polytetrafluoroethylene as valve seat sealing ring materials, their operating temperature is limited by the valve seat sealing ring materials. The cut-off function of the ball valve is completed by the metal ball being pressed against the plastic valve seat under the action of the medium (floating ball valve). Under a certain contact pressure, the valve seat sealing ring undergoes elastic-plastic deformation in local areas. This deformation can compensate for the manufacturing accuracy and surface roughness of the ball and ensure the sealing performance of the ball valve.
Since the valve seat sealing ring of the ball valve is usually made of plastic, the fire resistance and fire prevention of the ball valve should be considered when selecting the structure and performance of the ball valve, especially in the petroleum, chemical, metallurgical and other departments, when using ball valves in equipment and pipeline systems with flammable and explosive media, more attention should be paid to fire resistance and fire prevention.
Generally, ball valves are recommended for piping systems with two-position adjustment, strict sealing performance, mud, wear, constricted passages, rapid opening and closing (1/4 turn opening and closing), high-pressure cutoff (large pressure difference), low noise, cavitation and gasification, small leakage to the atmosphere, small operating torque, and small fluid resistance.
Ball valves are also suitable for piping systems with light structures, low-pressure cutoff (small pressure difference), and corrosive media. Ball valves can also be used in low-temperature (deep-cold) devices and piping systems. In the oxygen piping system of the metallurgical industry, ball valves that have been strictly degreased must be used. When the main pipeline in the oil pipeline and gas pipeline needs to be buried underground, a full-bore welded ball valve must be used. When the adjustment performance is required, a ball valve with a V-shaped opening structure must be selected. In petroleum, petrochemical, chemical, electric power, and urban construction, metal-to-metal sealed ball valves can be selected for piping systems with working temperatures above 200 degrees.
2) Before installation, the whole machine should be tested according to the specified signal (electricity or gas) (to prevent vibration caused by transportation from affecting performance), and it can be installed online only after passing the test (wiring should be based on the circuit diagram of the electric actuator).
3) Before connecting to the pipeline, the remaining impurities in the pipeline must be flushed and cleaned (these substances may damage the valve seat and ball).
4) During installation, please do not use the actuator part of the valve as a lifting point to avoid damage to the actuator and accessories.
5) This type of valve should be installed in the horizontal or vertical direction of the pipeline.
6) The pipeline near the installation point should not be drooping or subjected to external forces. Pipe brackets or supports can be used to eliminate pipeline deviation.
7) After connecting to the pipeline, cross-tighten the flange connection bolts with the specified torque.