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(1) voltage range: it refers to the valve output pressure P2 of the adjustable range, meet the requirements in this range accuracy. The major areas of voltage regulator and the stiffness of the spring.
(2) the pressure characteristics: it refers to the flow g as the set value, the pressure fluctuations caused by the input output characteristics of pressure fluctuations. Smaller fluctuations in the output pressure, the better the characteristics of pressure reducing valve. Output pressure must be less than the input pressure - basically do not value it with the input pressure change.
(3) the flow characteristics: it refers to the input pressure - from time to time, holding the output pressure of the output flow and change of G. G when the flow changes, the output pressure changes as small as possible. Generally the lower the output pressure, which changes with fluctuations in the output flow smaller.
Standard code name of standard
JIS B3372-1982 pressure relief valves for compressed air
Pressure reducing valve for JIS B8410-1990
GB/T 10868-1989 station temperature and pressure reducing valve knowledge condition
The general condition of GB/T 12244-1989 pressure reducing valve
GB/T 12245-1989 valve West can test method
GT/T 12246-1989 pilot valve
CB/T 3656-1994 water pressure reducing valve
Air pressure reducing valve for CB/T 3656-1994 ship
With the water supply system pressure relief valve ASTM F1370-1992 ship
JB/T 53265-1994 pilot operated pressure reducing valves grading of product quality
AWWA C511-1992 reduced pressure backflow valve assembly