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ASCO™ 342A Stainless Steel Pressure Regulator Filter
The ASCO Series 342A stainless steel pressure filter/regulators are designed to meet the demands of harsh process environments.
The series provides high flow rates with precise pressure regulation to actuators and ensures clean, dry media to eliminate contamination to downstream devices.
ASCO™ 342A Stainless Steel Pressure Regulator Filter


Body and Bowl Material
316L Stainless Steel
Filtering Element Material
316 Stainless Steel
Compressed air, sour gas
Pipe/Port Size
1/4 "; 1/2 "; 3/4 "; 1 "
Pressure Relief Port Size
1/8" NPT, M5
Maximum Flow
From 49 to 335 SCFM (1400 to 9500 l/m)
Adjustable Pressure Range
From 7 to 145 psi (0.5 to 10 bar)
Filtering Capacity
5μm, 25μm, 40μm
Operating Temperature
-40°F to 194°F (-40°C to 90°C) with options for -76°F (-60°C)
Operating Environment
Outdoor, Indoor


  • Heavy duty stainless steel internal and external parts for long service life in corrosive environments
  • Molded reinforced diaphragm allows for optimized flow paths and superior flow rates over competition
  • Comprehensive Certifications including: NACE compliant option for sour gas applications, Ingress Protection: IP65, ATEX (94/9/EC): non-electrical, and IEC 61508 Functional Safety SIL certified
  • Precise tuning and regulation accuracy
  • Dual pressure gauge ports for flexible installation
  • Auto Drain option for automatic dispensing of condensate
  • Quick Relief option prevents trapped pressure from locking actuator in last position
  • Laser etched nameplate will not fade or peel-off