Mainly use the seat adjustment: the circle because smaller proportion valve, open phase and adjust the discharge pressure, at the same time also on the back pressure effect. (2) to use in the relief valve installation to be trying to take care of facilities before or before installing, be sure to present the new installation debugging, to determine the guard of the valve set pressure value is required. (3) in the metal sign indicate the office of the spring pressure level range, after turning adjustment screw change amount of spring compression, can the opening pressure adjustment. (5) to ensure right opening pressure value, should make debugging when media conditions, such as media category, such as temperature as possible close to the actual operating conditions. Often fixed screws should be turned on after debugging, make its department is located in the adjusting ring grooves between the two teeth, can not only avoid adjustment ring rotation, and error adjustment ring initiation radial pressure. For safety to achieve a goal, before the adjustment ring upon, should make the relief valve inlet pressure reducing (right General should be below the opening pressure of 90. One hundred percent) In order to avoid valve suddenly open when debugging, lead to accidents. Every time when debugging, adjust: the amplitude of the circle of appropriate is too large, Regular rotation number of teeth) 。 (3) to have the upper and lower adjusting ring ( Each have a adjustment in the guide sleeve and valve seat ring) The structure of the debugging is a little complex. The new should seal again after debugging. Change in media category, especially when media accumulation state is not the same ( For example, from a liquid into a gas phase) , the opening pressure often change. 。 Seat adjustment ring is used to change the disc and adjust the volume of circle between channels, so the first time change valve opening pressure between the disc and the adjusting ring cavity interior accumulation degree of volume. When the adjusting ring has a counterclockwise to the left, the higher position, discharge pressure and back pressure will be reduced somewhat. So debugging and when used in high temperature, at room temperature under normal temperature setting pressure value should be slightly higher than the requirement of the opening pressure values. That way, the tightly closed surface of leak could cause valve prematurely suddenly open, but as the medium pressure is still not fully can keep the disc in the open position, the disc and then shut down, so the valve occurred frequency. High to what degree and the valve structure and material selection are all related, should be based on the interpretation of the manufactory understand. If spring office stress level by the user, the ordinary pressure should be according to the lower limit of the debugging of the factory. When elevated seat adjustment ring, the degree of stress accumulation increases, thus make rapidly with the decrease of the proportion valve opening stage to suddenly open very fast. (4) turn adjusting screw in screw before, should make the valve inlet pressure to reduce to 90 opening pressure to less than one hundred percent, in order to avoid spin turn adjustment screw when the disc is help and rotate, causing damage to tightly closed surface. Because of this, increases the seat adjustment ring can make reduce the discharge pressure. It should be noted that the seat adjustment ring also can rise to not for himself is very close to the disc. Speckle pipe Industrial Valves debugging security technology operating rules 1) Before opening pressure of the debugging (1) relief valve factory, should by testing its opening pressure to the user requirements of setting value. The debugging method in accordance with the valve structure is not the same and different. (2) for the recoil disc and seat belt to adjust the structure of ring, seat adjustment ring is used to adjust. Marine valve ( 2) Discharge pressure and back pressure of the debugging to debug the valve discharge pressure and back pressure, be sure to rev. The height of the movement of the valve to the whole paper try, because of this, only in the large volume try device or on the relief valve installation to be trying to take care of facilities after this is possible. 6 common fixed attached with back pressure relief valve used in occasions, when after inspection experience debugging opening pressure ( The back pressure to atmospheric pressure) , the setting value shall be the requirements of opening pressure value minus the supplementary with back pressure. When the relief valve in the renovation, should write down the debugging before remove valve screw and adjust the position of circle, with easy to debug office after finishing. In contrast, when the adjusting ring to the right to make clockwise, reduce its position, discharge pressure and back pressure will be increased. Office at higher temperatures, the opening pressure of ordinary corner. ( 3) End seal valve commissioning, shall be sealed up, in order to avoid easily change has debugging good state. Unscrewed the adjusting ring fixed screw, from revealing the screw hole and a thin iron what tools, can be a dial to adjust the ring gear, the adjusting ring turn right or left.
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