Method for installing valve in industrial chiller refrigeration system

In the refrigeration system of industrial chillers, the main function of the valve is to control the flow and direction of the refrigerant. In daily use, it is also necessary to use the valve frequently. When the industrial chiller needs to be shut down or opened, A valve is required. Because of its high frequency of daily use, it needs more attention during installation to ensure its normal use without affecting the stable use of industrial chillers. The following small series will take you to understand the installation steps and precautions of the valves in the industrial chiller refrigeration system. (EVR/MSV Refrigeration solenoid valve)

1. The valve should be installed in a place that is easy to disassemble and maintain. When installing various valves, attention must be paid to the flow direction of the refrigerant. (EVR/MSV Refrigeration solenoid valve)

2. When installing flanged valves for industrial chillers, flanges of flanges and valves must be made of high-pressure asbestos sheets. The thickness of high-pressure asbestos sheets should be determined according to the depth of the flanges on the valve. When the valve is large and the groove is deep, a thick asbestos board should be used to avoid the gap between the concave and convex interfaces between them being easy to have a gap and the sealing is not strict. When assembling the flange type valve, all the bolts must be evenly stressed. Otherwise, the concave and convex interface is easy to be biased. (EVR/MSV Refrigeration solenoid valve)

3. Install the shut-off valve so that the working fluid flows from the bottom of the valve to the upper part. When installing on a horizontal pipe, the stem should be vertically up or inclined at an angle to prevent the stem from facing down. If the valve position is difficult to access or the position is high, the stem can be installed horizontally for ease of operation. (EVR/MSV Refrigeration solenoid valve)

4. When installing the check valve for the industrial chiller, ensure that the spool can be automatically opened. For lift check valves, ensure that the centerline of the spool is perpendicular to the horizontal. For swing-type check valves, the rotation of the valve plug plate should be guaranteed and the valve plug plate must be level. (EVR/MSV Refrigeration solenoid valve)

5. The safety valve should be installed directly on the shut-off valve at the exit of the equipment. The arrow on the valve body should be consistent with the flow direction of the working fluid. (EVR/MSV Refrigeration solenoid valve)

6. The refrigeration solenoid valve must be installed horizontally at the exit of the equipment, and must be installed at the position specified in the drawings. If the refrigeration solenoid valve is installed in front of the throttle valve, keep at least 300mm between them. (EVR/MSV Refrigeration solenoid valve)

7. The thermal expansion valve in the industrial chiller must also be installed horizontally. Pay attention to the inlet and outlet connections of the valve. Usually there is a strainer at the inlet end of the valve. If the thermal expansion valve is well controlled, the position of the temperature sensing package is important. The temperature sensor package should be firmly fixed to the clean suction pipe so that the temperature sensor bag has good contact with the suction pipe. The external balance tube of the external balance thermal expansion valve should be installed at the lower part of the heat pipe tying section of the return air pipe, and the distance from the temperature-sensing bag tying place is 150-200mm. The temperature-sensing bag should be tied to the horizontal pipe section, and the external balance pipe should be returned from the back. The top of the tracheal horizontal section is taken out. (EVR/MSV Refrigeration solenoid valve)

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