Diaphragm Regulators Medium Flow
RDGH Series
Introduction
RDGH Series Medium Flow 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 various gas media with medium to high flow.
Features Diaphragm Regulators Medium Flow RDGH Series
◎ Large diameter diaphragm offers enhanced pressure sensitivity
◎ Metal-to-metal seal between valve body and diaphragm provides ensured sealing performance
◎ Reinforced diaphragm design extends diaphragm service life
◎ The bonnet includes a captured vent port, allowing media to be vented to a designated location in the event of accidental diaphragm rupture
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Port Size |
3/8″ to 3/4″, 10 mm or 12 mm |
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Max. Working Pressure |
500 psig (34.5 bar) |
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|
3000 psig (207 bar) |
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Outlet Pressure Range |
0 ~ 25 psig (0 ~ 1.7 bar) |
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0 ~ 50 psig (0 ~ 3.4 bar) |
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0 ~ 100 psig (0 ~ 6.9 bar) |
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0 ~ 150 psig (0 ~ 10.3 bar) |
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0 ~ 200 psig (0 ~ 13.8 bar) |
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Flow Coefficient (Cv) |
1.0 |
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Working Temperature |
PTFE, PCTFE: -40 ~ 165 °F (-40 ~ 74 °C) |
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PEEK: -40 ~ 400 °F (-40 ~ 204 °C) |
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SPE (Supply Pressure Effect) |
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Max. Inlet Pressure: 500 psig |
2 psig per 100 psig source pressure change |
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Max. 3000 psig Inlet Pressure: |
0.5 psig per 100 psig source pressure change |
Flow Data
Process Specification Diaphragm Regulators Medium Flow
| Process Specification | Special Cleaning and Packaging Process (FC-02) | Ultra High Purity Process (FC-03) |
|---|---|---|
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Material
|
316L SS, 316L SS VAR, Brass |
316L SS, 316L VAR SS |
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Wetted Surface Roughness |
Face Seal Connection or Butt Weld Connection:
Ra 20 in. (0.5 m)
Threaded Connection or Tube Fitting Connection:
Ra 32 μin. (0.8 μm) |
Face Seal Connection or Butt Weld Connection: Ra 10 μin. (0.25 μm) |
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Polishing Process |
Machine Finished |
Electropolished |
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Assembly Environment |
In specially cleaned areas |
ISO Class 4 (FS 209E Class 10 equivalent) cleanroom |
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Packaging |
Double bagged |
Double bagged in cleanroom |
Major Materials of Construction Pressure Piston Regulators RPGX Series
| Item | Component | Material/Specification |
|---|---|---|
|
1 |
Body
|
316L SS or 316L SS VAR or Brass |
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2 |
Guide Ring or Metal Spring Energized Seal
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PTFE/ASTM D1710 or PTFE/ASTM D1710 and 316 SS /ASTM A479 or Elgiloy Alloy or PEEK
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|
3 |
Spring Seat
|
316L SS or 316L SS VAR |
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4 |
Poppet Spring |
316 /ASTM A313 or Alloy X-750 |
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5 |
Lift Poppet |
316L SS or 316L SS VAR
|
|
6 |
Seat |
PCTFE/ASTM D1430 or PTFE/ASTM D1710 or PEEK |
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7 |
Seat Retainer
|
316L SS or 316L SS VAR |
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8 |
Diaphragm
|
316L SS/ASTM A240 |
|
9 |
Bonnet
|
304 SS/ASTM A479 or Brass |
|
10 |
Panel Nut |
304 SS/ASTM A479 |
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11 |
Handle |
ABS or Aluminium alloy |
Porting Configuration Symbol
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.
