General Diaphragm Regulators
RDGC Series
Introduction
RDGC Series General Diaphragm Regulators feature a single stage pressure reduction design with a combination of metal diaphragm and free poppet. This configuration ensures excellent sensitivity and stable outlet pressure, making these valves ideal for a variety of applications ranging from low to medium flow.
Features General Diaphragm Regulators RDGC Series
◎ Compact design and lightweight
◎ Hastelloy lift poppet offers excellent corrosion resistance
◎ Metal-to-metal seal between valve body and diaphragm provides ensured sealing performance
◎ Reinforced diaphragm improves sealing performance and extends service life
| DESCRIPTION | SPECIFICATION |
|---|---|
|
Port Size |
1/4″, 3/8″ or 1/2″
|
|
Max. Working Pressure |
4500 psig (310 bar)
|
|
Outlet Pressure Range |
25 : 0 ~ 25 psig (0 ~ 1.7 bar)
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|
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50 : 0 ~ 50 psig (0 ~ 3.4 bar) |
|
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1H : 0 ~ 100 psig (0 ~ 6.9 bar)
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150 : 0 ~ 150 psig (0 ~ 10.3 bar)
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|
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250 : 0 ~ 250 psig (0 ~ 17.2 bar)
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5H : 0 ~ 500 psig (0 ~ 34.5 bar)
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Flow Coefficient (Cv) |
500, 1500 psig Inlet: 0.2 |
|
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3500, 4500 psig Inlet: 0.09 |
|
Working Temperature |
PCTFE：-40 ~ 165 °F (-40 ~ 74 °C) |
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Polyimide：14 ~ 194 °F (-10 ~ 90 °C)
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SPE (Supply Pressure Effect) |
Outlet Pressure: 250, 500 psig :
1.3 psig per 100 psig source pressure change |
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Outlet Pressure: 750, 1000 psig : 1.9 psig per 100 psig source pressure change |
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Outlet Pressure: 1500, 2000 psig : 4.5 psig per 100 psig source pressure change
|
Flow Data
Process Specification General Diaphragm Regulators
| Material | 316L SS, 316L VAR Brass (Nickel Plated), Hastelloy C-276 | 316L SS, 316L VAR |
|---|---|---|
|
Process Specification |
Special Cleaning and Packaging (FC-02) |
Ultra High Purity (FC-03) |
|
Wetted Surface Roughness |
Ra 20 μin (0.5 μm) |
Ra 10 μin (0.25 μmm) |
|
|
Ra 32 μin. (0.8 μm) |
|
|
Polishing Process |
Machine Finished |
Electropolished |
① For valves with FR connections and butt weld connections, the internal surface finish is 20 μin. (0.5 μm) Ra.
② For NPT connections or tube fitting and other options adapted from male NPT, the internal surface finish is 32 μin. (0.8 μm) Ra.
③ For standard ultra high purity products, the surface finish is 10 in. (0.25 μm) by default. For products with higher surface finish, please contact FITOK.
Major Materials of Construction Diaphragm Regulators
| Item | Component | Material/Specification |
|---|---|---|
|
1 |
Body
|
316L SS or 316L VAR
|
|
2 |
Friction Sleeve |
316L SS or 316L VAR |
|
3 |
Poppet Damper
|
PTFE/ASTM D1710
|
|
4 |
Poppet Spring |
Alloy
|
|
5 |
Lift Poppet
|
Alloy C-276/ASTM B574
|
|
6 |
Seat
|
PCTFE/ASTM D1430 or Polyimide
|
|
7 |
Seat Retainer
|
316L SS or 316L VAR
|
|
8 |
Diaphragm
|
316L SS/ASTM A240
|
|
9 |
Panel Nut
|
304 SS/ASTM A479 |
|
10 |
Bonnet
|
304 SS/ASTM A479
|
|
11 |
Handle |
ABS
|
Porting Configuration Symbol
Notes:
1. IN and OUT are the inlet and outlet ports for connecting the valve to the system. so that other Port should not be used for system connections.
2. Porting configuration is viewed from the top.
