Shandong pneumatic precision analysis of butterfly valve pneumatic valve failure problem solution

believe that a lot of friends in the use of pneumatic valve adjustment time how many there will be a failure, so small make up today to tell you about the several common failures and solutions.
a, test and adjust the
and the company whether it is manual, pneumatic, hydraulic, electric parts are strict debugging before they go out, the user when the re-inspection sealing performance, import and export shall be uniformly fixed on both sides, closing butterfly pneumatic valve, pressure on suction side, in the export side to observe any leak phenomenon, before the trial, the strength in the pipeline should open the butterfly plate, to prevent damage to the sealing ring.
, pneumatic valve pneumatic butterfly valve manufacturers are through the strict inspection before they go out and experiment, but there are also individual products in transit automatic screw dislocation, to readjust, pneumatic, hydraulic, etc. , please read the form a complete set of drive operation instruction.
pneumatic valves, electric butterfly factory has will control institutions opening and closing of the trip. To prevent power on is the direction to make wrong, the user after the first switched on, the first to open the manual to half open position, in the direction of electric switch check dial with pneumatic valve can be closed in the same direction.
2,
common faults and eliminate method, before the installation way confirm the butterfly pneumatic valve manufacturers products performance and whether the medium flow arrow is consistent with the movement conditions, and insert pneumatic valve inner cavity clean, do not allow foreign impurities in sealing ring and disc attached, before cleaning must not allow closing butterfly plate, so as not to damage the sealing ring.
the butterfly, butterfly plate mating flange installation recommended special pneumatic valve flange, according to the adjustment of pneumatic valve manufacturer production pneumatic valve selection.
and installation position in the pipeline, the optimal location for the vertical loading, but can't flip. Need to adjust the flow in the
and use of, have to control the worm gear box.
, opening and closing times more the pneumatic butterfly valve, in 2 months time, open the worm gear case cover, check whether the butter is normal, should keep the right amount of butter.
compression, check the connection parts requirements, namely the packing sealing, guaranteeing flexible pneumatic valve rod rotation.
and metal seal butterfly pneumatic valve products are not suitable for installation in the end of the pipe, such as must be installed in the end of the pipe, fittings export flange, should also be taken to prevent the backlog of sealing ring, too.
, pneumatic valve rod installation using regular check pneumatic valve using effect, find fault in a timely manner to eliminate.
use pneumatic valve installation introduction now, let's introduce by our professional pneumatic valve manufacturer could be several reasons and solutions of the problem.
sealing leak:
, butterfly plate, seal face with sundry
, butterfly plate, seal face closed position match not
configuration, export side flange bolt uneven or not according to the requirements of figure a
, not according to the requirements of figure a direction of pressure test, eliminate impurities,
clean pneumatic valve lumen, adjust the adjusting screw of worm gear or electric actuator, pneumatic valve to the closed position right
, check with telescopic flange plane and bolt pressure, should be uniform pressure
, according to direction pointed seal pressure pneumatic valve

, on both sides of the two end face leak sealing gasket failure
, uneven tube flange force or pressure
, sealing ring, sealing gasket failure, replace the sealing gasket
, compression flange bolts ( The uniform stress)
, pneumatic valve pressure ring, replace the sealing ring, failure pad.