170-172-173 Series Self-Contained Back Pressure Regulators

The Masoneilan 170-172-173 Series are spring loaded, direct-operated, pressure relieving or back-pressure regulators designed for steam, gas and liquid service.  They are available in ½” through 2” (DN15 through DN50) body sizes. These regulators are designed for continuous, rugged industrial use to provide years of reliable service.

General features:

• Flow to close design
• Available with ISA Face to face dimensions
• From 5 to 9 different CV’s for each size to assure high accuracy in regulation
• Metal or Sot Seat
• Internal pressure sensing (external on request)
• Wide range of actuators according to the requested regulation range
• Elastomeric or metal diaphragms
• Fully sealed construction available (suitable for dangerous medium; ATEX compliant)

Sizes:
¼” through 2” (6 through 50 mm)

Ratings and Connections:
• Flanged: ANSI 150 – 600 UNI-DIN 10 – 100
• Screwed: NPT
• Welded: SW

Body Materials:
• Carbon steel
• Stainless steel
• Chrome-moly

Actuator:
• Sizes 80 through 515 spring opposed diaphragm

Trim:
• Single seat, disc plug
• Hard (metal) and soft (elastomer) seat options

Working Range:
• 0.035 psi to 667 psi (0.0024 to 46 bar)