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TESCOM™ ACS012 Changeover Pressure Regulator
ACS012 Series is a compact, lightweight high purity changeover system for specialty, corrosive, and pyrophoric gases.
Diffusion-resistant metal diaphragm seal ensures gas purity and integrity. Provides continuous low flow of gas from two pressure sources. Ideal for use in analyzer carrier gas, CO2 for tissue and cell culture incubators and laser resonator gas applications.
TESCOM™ ACS012 Changeover Pressure Regulator


Maximum Inlet Pressure
400 or 3500 psig / 27.6 or 241 bar
Maximum Delivery Pressure
85-115 psig / 5.9-7.9 bar
135-165 psig / 9.3-11.4 bar
185-215 psig / 12.8-16.2 bar
235-265 psig / 16.2-18.3 bar
Body Material
316 Stainless Steel, Brass or Nickel-plated Brass
Bonnet Material
300 Series Stainless Steel or Brass
Valve Seat
Diaphragm & Spring
316 Stainless Steel
Friction Sleeve
Inner: PTFE
Outer: 316 Stainless Steel
Remaining Parts
316 Stainless Steel (& Brass for Brass bodies)
Operating Temperature
-40°F to 165°F / -40°C to 74°C
Port Size & Type
1/4 NPTF
Flow Capacity
Cv = 0.06
5 lbs / 2.2 kg
Additional Information
For custom modifications or a complete system solution, please contact your local sales office.


  • Maximum inlet pressure: 400 or 3500 psig / 27.6 or 241 bar
  • Four delivery pressures from 100 to 250 psig / 6.9 to 17.2 bar
  • Designed to provide a continuous flow of gas for applications requiring stored gas supplies
  • Available in 316 Stainless Steel, Brass, or Nickel-plated Brass
  • Based on the field-proven TESCOM 44-2200 regulator
  • Mounting bracket is standard