1, safety valve should be carried out before the installation of pressure test and air tightness test to test the safety valve strength and sealing performance. Qualified before correction and adjustment. 2, in the gas test stand, by adjusting the load on the valve to correct the safety valve opening pressure. Lever-type safety valve to adjust the hammer position, spring-loaded safety valve to adjust the amount of spring compression. Safety valve opening pressure should be consistent with the boiler, pressure vessel safety technology supervision regulations of the relevant provisions. 3, in the container, by adjusting the safety valve adjustment ring and the valve clearance, to adjust the relief valve discharge pressure and back seat pressure. If the safety valve in the opening pressure only leaks and does not take-off or jump though the pressure drop after a violent vibration and "beep" sound, the gap is too large, should be adjusted to be smaller. If the back seat pressure is too low, the adjustment ring gap is too small, should be properly adjusted. Steam relief valve discharge pressure should be less than or equal to 1.03 times the opening pressure, opening and closing pressure difference should not exceed 10% of the opening pressure. Air or other gas relief valve discharge pressure should be less than or equal to 1.10 times the opening pressure, opening and closing pressure difference is not greater than 15% of the opening pressure. 4, safety valve calibration and pressure adjustment, the unit must be in charge of boiler pressure vessel safety technical staff presence, adjustment and calibration device with a pressure gauge accuracy of not less than 1, online calibration should be Safety precautions. 5, the calibration process, calibration staff should make a timely record. Check the qualified safety valve, the installation of the accessories should be mounted on the lead seal to prevent the well-adjusted to change the state.
Traffic Signal Lighting
We started to manufacture traffic signal pole from 2001 and exported from 2002.
Our firm introduced whole set of good-sized numerical control hydraulic
folding equipment(1280/16000) as well as equipped with a series of
good-sized professional equipments of armor plate-flatted machine,
lengthways cut machine, numerical control cut machine, auto-closed up
machine, auto-arc-weld machine, hydraulic redressing straight machine,
etc. The firm produces all sorts of conical, pyramidal, cylindrical
steel poles with production range of dia 50mm-2250mm, thickness
1mm-25mm, once taking shape 16000mm long, and large-scale steel
components. The firm also is equipped with a multicolor-spayed
pipelining. At the meantime, for better service to the clients, our firm
founded a branch com. The Yixing Jinlei Lighting Installation Com,
which offers clients a succession of service from design to manufacture
and fixing.
Traffic Signal Mast,Traffic Signal Light, Camera Pole,Traffic Signal Lighting
Jiangsu Xinjinlei Steel Industry Co., Ltd. , https://www.jinleisteelpole.com