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(14) If the large valve is used for gas, install a reducer to prevent excessive
flow speed. ( The flow speed made in pipings is appropriate, if it is 15m/s
or less.)
(15) Above the center of the pipe line, be sure to reserve enough space larger
than H
(Fig.3). Please see the following table.
2
Nominal Size 15A 20A
H
2
７． Operating Procedure
７．１ Precautions for pressure reducing valve operation
Warning
Do not touch the valve directly with bare hands.
※Doing so may result in burns.
Caution
(１) Close the stop valves before and after the pressure reducing valve, and
remove all foreign matter and scales via the by-pass line before
operation.
※Failure to do so may prevent the valve from functioning correctly.
(２) When the adjust pressure, slowly turn the adjusting screw
※ Incorrect adjustment may cause hunting, water hammer, etc.,
resulting in damage to the valve and other equipment.
(３) Remove condensate completely from the line, and close the stop valves
before and after the valve when not using it for long periods of times.
※Rust generated in the valves and lines may cause malfunction.
25A
32A
500 500
500
650
-10-
Table 7 (mm)
40A
50A
65A
650
650
800
Fig.11
80A 100A 125A 150A
800 1000 1200 1400
■EPDT-096b■
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