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TESCOM™ 44-4700 Series Industrial Backpressure Gas Regulator
44-4700 Series is an extremely sensitive, high purity, backpressure regulator for specialty, flammable and industrial gases for low pressure, and sub-atmospheric pressure control.
Diffusion-resistant metal diaphragm seal ensures gas purity and leak integrity. Ideal for use in analytical systems, sample systems and pilot plants.
TESCOM™ 44-4700 Series Industrial Backpressure Gas Regulator


Maximum Inlet Pressure
50 mm Hg absolute - 15 psig / 1 bar
50 mm Hg absolute - 50 psig / 3.4 bar
50 mm Hg absolute - 100 psig / 6.9 bar
50 mm Hg absolute - 150 psig / 10.3 bar
Body & Diaphragm: 316 Stainless Steel
Bonnet: Electroless Nickel Plated Brass
Seat: Teflon®
Spring Main Valve & Bias: 316 Stainless Steel
Remaining Parts
316 Stainless Steel
Ambient Operating Temperature
-40°F to 165°F / -40°C to 74°C
Port Size & Type
1/4, 3/8
Flow Capacity
Cv = 0.04, 0.30 optional:
Load Type
2.75 lbs / 1.2 kg
Additional Information
For custom modifications or a complete system solution, please contact your local sales office.


  • 316 Stainless Steel diaphragm provides metal-to-metal sealing integrity and good sensitivity
  • Large sensing seat area ratio provides a low crack-to-reseat pressure differential and excellent repeatability
  • Negative spring bias for vacuum systems
  • Adjustable stop limits maximum outlet pressure
  • NACE compliant designs are available