REGULATORS FOR SPECIFIC APPLICATIONS
Models
VRE, VRS
Ultra High Purity, Corrosive Resistant,
Vaporizing Regulators
Models VRE and VRS spring loaded, pressure–reducing regulators are designed to heat and vaporize media before and after pressure reduction to
keep condensable liquids in their gas phase. The media is heated while passing through coiled tubes within a heating chamber. Media contact materials of
316 Stainless Steel, Elgiloy® and Vespel® minimize the effects of extreme temperature and provide good corrosion resistance.
The Model VRE incorporates a 120 volt /150 watt thermostatically controlled heating unit. The controlling circuit is housed in an explosion–proof,
dust tight junction box compliant with National Electric Code requirements for Class 1 –Groups B, C and D standards. The Model VRS is a steam heat
version of the vaporizing regulator.
These regulators are commonly used in gas chromatography, hydrocarbon sampling, fluid fractionalization, sample conditioning and to preheat heavy process
fluids.
Standard
Features
- Multi–turn Potentiometer Adjustment allows high resolution in temperature control (Model VRE)
- Metal to Metal Diaphragm to Seal(without back–up o–ring) assures maximum diffusion resistance.
- High Purity Regulator Design permits vacuum purging of regulator.
- 1/16" NPT Female Bonnet Vent Port allows bonnet to be connected to a vent line or disposal system as a precaution in the unlikely event of a diaphragm
failure.
- Pressure Rated per criteria of ANSI/ASME B31.3
- Filter in Inlet traps foreign matter, extends regulator life and reduces maintenance.
Optional Features
- Mounting Ring permits regulator to be panel mounted
- 50 Watt version approved by the CSA is available.
Specifications
Maximum Inlet Pressure: 3500 psig
Delivery Pressure Range
Operating Steam Pressure (Model VRS): 250 psig
Operating Temperatures:
Model VRS: maximum at 400°F
Model VRE (150W): up to 450°F
Optional 50W: up to 350°F
Operating Temperature (media): -15°F to 450°F
Ambient Operating Temperature Range:
-40°F to 104°F
Filter: 40 micron
Flow Coefficient: Cv = 0.6
Inlet and Outlet Connections: 1/4" NPT female
Steam Ports (Model VRS): 1/4 NPT female
Approximate Weight: 5 lbs. |
Materials of Construction
Body, Bonnet and Heat Exchanger Tube:
Type 316 Stainless Steel
Other Metal Parts Exposed to Gas:
Type 316 Stainless Steel
Seat: Vespel®
Diaphragm and Spring: Elgiloy®
Optional Equipment
| Equipment |
Part No. |
| Panel Mounting Ring* |
PM3803 |
| 50 Watt version approved by the CSA |
VRE–50W–(PSIG) |
|
Table I
Part No.
Electric Models
|
Part No.
Steam Models |
Delivery Pressure
Range (psig) |
| VRE–25 |
VRS–25 |
1–25 |
| VRE–50 |
VRS–50 |
1–50 |
| VRE–100 |
VRS–100 |
1–100 |
| VRE–250 |
VRS–250 |
2–250 |
| VRE–500 |
VRS–500 |
3–500 |
|