Hard seal ball valve maintenance should pay attention to the place

Hard seal ball valve maintenance should pay attention to the place

Overview
Having a long service life and maintenance-free period will depend on the following factors: () normal operating conditions, maintaining a harmonious temperature / pressure ratio, and reasonable corrosion data
note
　　
When the hard seal ball valve is closed, there is still pressurized fluid inside the valve body. 　　

⊙ before servicing, and relieve line pressure valve in the open position 　　

☉ before servicing, or disconnect the power source of the gas 　　

Remove the actuator from the bracket before servicing the hard seal ball valve 　　

☉ Must first find out that the pressure on the upper and lower pipes of the ball valve has been removed before demolition and decomposition operations 　　

When disassembling and reassembling, care must be taken to prevent damage to the sealing surfaces of parts, especially non-metallic parts. Special tools are recommended for removing O -rings. 　　

☉ assembly bolts on the flanges must be symmetrical, gradually, evenly tighten 　　

The cleaning agent shall be compatible with the rubber parts, plastic parts, metal parts and working media (eg gas) in the ball valve. The working medium for the gas, the available gasoline (GB484-89) clear
Wash metal parts. Non-metallic parts cleaned with pure water or alcohol 　　

☉ down decomposition of individual parts can be cleaned by immersion method. Metal parts that still have undecomposed non-metallic parts can be cleaned with a clean, finely-cleaned silk cloth impregnated with detergent (to prevent the fibers from sticking to the parts). Remove any grease, dirt, glue, dust, etc. that adhere to the wall when cleaning. 　　

After ⊙ non-metallic parts should be cleaned immediately removed from the cleaning agent, not a long soak 　　

☉After cleaning, the wall surface cleaning agent should be volatilized (can be wiped with a silk cloth not immersed in cleaning agent), but it must not be left for a long time, otherwise it will rust and be contaminated by dust. 　　

⊙ the new parts in the assembly also need to clean 　　

☉ Lubricate with grease. Grease should be compatible with ball valve metal materials, rubber parts, plastic parts and working media. When the working medium is gas, for example, special grease 221 can be used. Apply a thin layer of grease to the surface of the seal mounting groove. Apply a thin layer of grease to the rubber seal. Apply a thin layer of grease to the sealing and friction surfaces of the stem. 　　

⊙ When hard-seal ball valves are assembled, metal debris, fibers, grease (except for the specified use), dust and other impurities, foreign matter, etc. shall not be allowed to adhere, adhere or stay on the surface of the parts or enter the cavity.

Recommend hard seal ball valve for you

Knife gate valve

Butterfly valve

Single screw pump

Pipeline centrifugal pump

Self-priming pump

Electric pump

Centrifugal pump

Naughty Castle

Naughty Castle

Limiter

Metal hard seal ball valve

Hydraulic control valve

A pressure regulating valve

V type ball valve

Yongjia Xingzhou Valve Co., Ltd. () Professional manufacturer of hard-sealed ball valve manufacturer base: No. 3, Mercedes-Benz Road, Maji, Yongjia, Yongjia, Zhejiang, China