Safety valve adjustment, maintenance and repair

Valve adjustments and repairs, including changing the set pressure, the safety valve shall be factory, factory authorized representative, or obtain the appropriate qualifications to perform the professional training of personnel.
Repair of critical spare parts used by the original safety valve provided by the manufacturer; if made by an authorized agency, shall meet the technical requirements of the original parts. The so-called "key components" refers to the part of its design have a critical impact on the performance of the situation to ensure that gas valve, comprising at least a nozzle (seat), valve, valve seat, valve core, the guide sleeve, stem or stem assembly, adjustment ring and spring. If you want to change the setting pressure relief valve, the valve design should ask the manufacturer for applicability of the changed working conditions. The manufacturer shall decide whether to replace the spring. Only meet the manufacturer standards spring before use. Changing mechanism responsible for setting the Gas Heater Control Valve should be installed to indicate the set pressure and other relevant parameters nameplate. Original logo has been changed to be crossed, but should remain recognizable.
The safety valve should at least be confirmed by the set pressure and tightness test.