What are the methods to remove check valve barriers?
Installation and maintenance:
① The exhaust check valve is installed vertically on the horizontal pipe and is generally in full open condition.
② Lift vertical valve shall be installed on vertical pipe, lift horizontal valve and rotary check valve shall be installed on horizontal pipe.
③ Note that the flow direction mark on the valve is consistent with the medium flow direction before installation.
④ The media passing through the pipeline should not have hard particles to avoid damaging the sealing surface.
⑤ Proper packing protection, shock protection and collision prevention in cylinder parts.
⑥ Valve should be placed smoothly, pneumatic drive device up, not mutually extruded.
⑦ In use, attention should be paid to whether the valve has abnormal sound and vibration. In order to prevent the water hammer effect in the pipeline, attention should be paid to the pressure fluctuation of the pipeline medium.
Common faults and troubleshooting methods:
Common faults 1: Disc not open or closed
Causes 1: The rocker is too tight with the pin shaft or foreign body is stuck
Exclusion methods: Checking coordination
Causes 2: Foreign body blocking in valve
Exclusion methods: Elimination of foreign bodies
Common faults 2: Leakage at valve body and bonnet connection
Causes 1: Unfastened connection bolts
Exclusion methods: Uniformly tighten
Causes 2: Flange seal damage
Exclusion methods: Re-repair
Causes 3: Gasket rupture or failure
Exclusion methods: Replacement of new gaskets
Common faults 3: Valves are loud and vibrating
Causes 1: Valve position too close to pump
Exclusion methods: Re-install proper location
Causes 2: Pressure instability of medium flow in pipeline
Exclusion methods: Eliminate pressure fluctuations
