Reducing valve basic performance and design standards
Basic performance
1) Pressure regulating range: it refers to the adjustable range of reducing valve output pressure P2, the required accuracy need to be reached in this context. The pressure regulating range mainly relates to the stiffness of the pressure regulating spring.
(2) Pressure characteristics: it refers to when the flow g is the fixed value, due to input pressure fluctuation to cause output pressure fluctuation characteristics. The smaller output pressure fluctuation the better reducing valve characteristics. The output pressure must be less than the input pressure certain value- it basically does not change with the input pressure
(3) Flow characteristics: it refers to when the input pressure is fixed, the output pressure changes with the change of output flow g. When the flow g changes, the smaller output pressure changes is better. Generally the lower the output pressure, it changes litter with output flow change fluctuations.
design standard
| standard code | standarad name |
| JIS B3372-1982 | compressed air reducing valve |
| JIS B8410-1990 | watercourse reducing valve |
| GB/T 10868-1989 | power plant tenperature and pressure reducing techinical condition |
| GB/T 12244-1989 | general conditions of reducing valve |
| GB/T 12245-1989 | reducing valve performance test method |
| GT/T 12246-1989 | pilot reducing valve |
| CB/T 3656-1994 | water reducing valve |
| CB/T 3656-1994 | marine air reducing valve |
| ASTM F1370-1992 | marine water supply system reducing valve |
| JB/T 53265-1994 | pilot reducing product quality grading |
| AWWA C511-1992 | decompression and anti-reflux valve components |
