Tescom Wega-SP

TESCOM WEGA-SP (single stage) with integrated purge function includes shut-off function and check valve and is specially designed for use with corrosive or toxic gases and gas mixtures. The integrated purging device effectively removes residual moisture, aerial oxygen and remaining process gas.


• Pressure reduction of corrosive or toxic gas from pressure cylinders by inducting the purge gas. The process gas will be effectively eliminated from the regulator and the cylinder connection.
• Ideal for use in laboratories.

Features and Benefits

• Compact design without externally mounted purging device. Reduces weight, internal volume and installation length.
• Effective purging due to integrated purge valve and check-valve, low purge gas consumption, minimized risk of corrosion.
• Reduces consumption of expensive calibration gases and test gases because residual moisture and external gases are eliminated before starting-up the process.
• Optional tied diaphragm “positive seal” design provides additional shut-off assistance for corrosive gases.
• Valve trim and diaphragm made of Hastelloy® are available for extended life by reducing corrosion.
• Minimized helium leak rate due to reduced number of connections


Maximum Inlet Pressure

2900 psig / 200 bar


Outlet Pressure Ranges

7.25—21.75, 7.25—58, 14.5—101.5, 14.5—145 psig
0.5-1.5, 0.5-4.0, 1.0-7.0, 1.0-10.0 bar


Leakage Rate Against Atmosphere

2 x 10-8 atm cc/sec He


Nominal Flow Capacity

10 m3/h (according to pressure and used gas)
Cv = 0.06
Cv = 0.15
Cv = 0.24 optional


Temperature Range

Seat PCTFE: -25°C to +60°C [-13°F to 140°F]
Seat TEFLON® PFA 350/PTFE: -25°C to +74°C [-13°F to 165°F]



Higher outlet pressure up to 500 psig / 35 bar
Relief valve with captured venting
Shut-off and metering valve at outlet
Absolute pressure version



316 Stainless Steel



316 Stainless Steel, Hastelloy®





Purging Seat



Inlet Connection

According to national standards like DIN477-1, CGA V-1 and BS341


Outlet Connection

1/4″ NPTF female or compression fitting