Matters needing attention when the ball valve assembly

Note: low ball valve in the closed state, the body still exist inside low pressure fluid before repair, remove line pressure and make the valve is in open position before the low maintenance, disconnect the power supply or air low maintenance, the executing agency with support from low must first find out on the ball valve, the downstream piping have indeed after unloading the pressure, dismantling operations to low decomposition and repackaging must be careful to prevent damage the sealing surface of the parts, especially the nonmetallic parts, remove the o-rings of inappropriate use of special tools where assembly flange bolts must be symmetrical, step by step, tight low detergent should be evenly with the ball valve of rubber parts, plastic parts, metal parts and working medium ( For example, gas) Are incompatible. Working medium is gas, can use gasoline ( GB484 - 89). Clean the metal parts. Non-metallic parts clean with clean water or alcohol in the 90 s of the regulator key in what aspects of foreign enterprises in China valve market occupy ten percent