4

Model¡GREF(Flange Type)¡BRET(Thread Type)
 

 Product accent¡G
  • Valve Body is made by Stainless Steel #316, suitable for fluid, air and vapor.
  • The gate is balanced-pressure designed, which will not influence the outlet pressure caused by unstable inlet pressure.
  • When the outlet pressure responds directly to the pressure control chamber and adjusts the setting pressure, it responds quickly and adjusts the pressure accurately.
  • Design of piston and diaphragm improves the inability of sustaining pressure and leakage.
  • Pressure Adjusting Range¡G
    (1 kgf/cm2 = 14.2 psi)
    1kgf / cm2¡ã6kgf / cm2
    4kgf / cm2¡ã10kgf / cm2
    8kgf / cm2¡ã13kgf / cm2
  • Applied Temperature¡G
    -15¢J¡ã100¢J
    100¢J¡ã180¢J (For steam)
  • Valve Body Testing Pressure ¡G35 kgf/cm2
  • Please cover steam pipelines with thermal materials
  • Special order can be arranged for higher pressure adjustment range

Thread Type-illustration
  1. Pressure Gauge¡G(Depend on the medium)
  2. Upper Cover¡GStainless Steel 316
  3. U-ring¡GNBR / Viton
  4. Piston¡GStainless Steel 316
  5. Sealing Spacer¡GNBR / Viton/Teflon
  6. Shaft¡GStainless Steel 316
  7. Main Body¡GStainless Steel 316
  8. Diaphragm¡GNBR / Viton
  9. HU-ring¡GNBR / Viton
  10. Spring¡GSpring Steel
  11. Lower Cover¡GStainless Steel 316
  12. Washer ¡GBrass
  13. Adjusting Stem¡GStainless Steeel 304
Item No Thread Type H L CV
RET-15S 1/2" 75 71 2.4
RET-20S 3/4" 75 86 9.0
RET-25S 1" 81 90 11.0
RET-40S 1 1/2" 115 115 21.0
RET-50S 2" 115 120 25.0

¤Ø¤o³æ¦ì¡Gmm


Flange Type-illustration

  1. Pressure Gauge¡G(Depend on the medium)
  2. Upper Cover¡GStainless Steel
  3. O-ring¡GNBR / Viton
  4. U-ring¡GNBR / Viton
  5. Piston¡GStainless Steel 316
  6. Sealing Spacer¡GNBR / Viton
  7. Shaft¡GStainless Steel 316
  8. Diaphragm¡GNBR / Viton
  9. Main Body¡GStainless Steel 316
  10. UH-ring¡GNBR / VIiton
  11. Fixed Bolt¡GStainless Steel 304
  12. Spring¡GSpring Steel
  13. Lower Cover¡GStainless Steel 316
  14. Washer¡GBrass
  15. Adjusting Stem¡GStainless Steel 304
Item No Flange Type H L CV
REF-15-S 1/2" 75 150 2.4
REF-20-S 3/4" 82 150 9
REF-25-S 1" 82 150 11
REF-40-S 1 1/2" 115 190 21
REF-50-S 2" 115 192 25
REF-65-S 2 1/2" 185 210 75
REF-80-S 3" 185 225 80
REF-100-S 4" 230 250 120
REF-150-S 6" 290 310 250

 Measuring Unit¡Gmm


Applied Condition of Direct-activated Pressure Reducing Valve

  • Installing pressure reducing valve directly in the sub-pipe can reduce fluid pressure inside the pipe.
  • Installing a filter in the inlet of pressure reducing valve can prevent block of valve gate caused by impurities and limescale.
  • Installing pressure relief valve downstream pressure reducing valve can protect the system.
  • While using screws to connect pressure reducing valve, joints should be installed in the inlet and outlet to make maintenance easy.

Pressure Setting and Flow Rate of Direct-activated Pressure Reducing Valve

Direct-activated pressure reducing valve directly opens and closes the valve gate by the outlet pressure. When outlet pressure is under setting pressure, valve gate automatically opens. To make valve gate fully open, adjustable pressure range and setting pressure are relative points.

A: Pressure drop needed for fully-opened valve gate = , B=Adjustable Pressure Range Maximum – Minimum
B¡GAdjustable Pressure Range (=Maximum Minimum Adjustable Pressure Range)
C¡GSetting Pressure of Outlet
D¡GPressure of fully-opened outlet valve gate, P=C-A

Example¡G
Pressure drop needed for fully-opened valve gate for adjusting pressure range 3~9 kgf/cm2 of direct-activated pressure reducing valve.

If the setting pressure of outlet is 6kgf / cm2, pressure of fully-opened valve gate will be P=6-1.5=4.5 kgf/ cm2(Outlet pressure should go down under 4.5kgf/ cm2 to make valve gate fully open)


Flow Chart of Direct-activated Pressure Reducing Valve


Z-Tide Valves Industrial Co.,Ltd TEL: +886-7-331-1060 FAX: +886-7-331-0100 E-mail: sales@z-tide.com
Official Exporting Department: Elite Line Industrial Corporation
Z-TIDE Group Elite Line Industrial Corp
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