hard seal butterfly valve before installation to the product performance and to confirm whether the medium flow arrow is consistent and exercise conditions, and the Industrial Valves internal scrub clean, do not allow the impurities on the sealing ring and the bat has attached, before cleaning is not allowed to shut off the bat, so as not to damage the sealing ring. Hard seal butterfly valve installation of mating flange should use special flange disc valve, installed in the best position for the vertical loading, but can't flip. Hard seal butterfly valve installation test and adjustment: 1, hard seal butterfly valve, pneumatic, hydraulic, manual, electric, etc. The parts are through strict debugging before they go out, when users in the detection of sealing performance, should be evenly on both sides of the fixed body of imports and exports, first close the disc valve, to import the lateral pressure, hard seal butterfly valve on the export side to observe if there is any leakage phenomenon, before the pipeline strength experiments, should first open the disc plate, to prevent damage to the seal air compressor, valve, relief valve spring safety valve, micro and safety valve, stainless steel relief valve, steam safety valve. 2, hard seal butterfly valve is the strict I ection before they go out and experiment, but also the inevitable existence of individual products in transit automatic screw dislocation, to readjust, pneumatic, hydraulic, etc. , please carefully read the accessory drive specification. 3, hard seal butterfly valve 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 open manually to half open position

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