Marsh Bellofram Subminiature Regulator, Type 91
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Type 91 SubMiniature Regulator

Brand: Marsh Bellofram Group of Companies
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Type 91 Subminiature Regulator from Bellofram PCD is a compact, low-cost unit which operates in pressure ranges up to 100 psi, with a maximum supply pressure of 250 psi.

It provides dependable reliability and accuracy for low flow or dead end applications, but is not designed for critical flow applications. The Type 91 subminiature regulator is available with a corrosion resistant anodized aluminum body and bonnet or with a brass body and bonnet. Both come standard with a fluorocarbon diaphragm.

The Type 91 low bleed version is designed for applications where low air consumption is required.

The Type 91 is ideal for applications where space is limited and for dead ended/low flow service. Such applications include ink control on printing presses, panel loading applications, hand-held analyzers and calibration equipment, small cylinder operations, and all types of instrumentation applications.

It can be through panel mounted or, due to its low weight, pipe mounted. A slotted adjustment screw is available for precision control.
Features
  • Designed for for applications with limited space and for low flow or dead end service.
  • Small package size and lightweight construction.
  • Standard or low bleed versions available.
  • Corrosion resistant anodized aluminum exterior.
  • Excellent stability and repeatability.
  • Self-relieving.
  • Low cost.

Specifications

Brand

Effect of Supply Pressure Variation (25 psig) on Outlet Pressure

  • < 0.25 psig (17.02 mbar) to < 0.5 psig (34.5 mbar)

Exhaust Capacity (5 psig Above 20 psig Set Point)

  • 0.1-0.3 scfm Typical (2.8-8.5 LPM)

Maximum Supply Pressure

  • 250 psig (17.2 bar) to 150 psig (10.3 bar)

Flow Capacity at 100 psig (6.9 bar) Supply and 20 psig (1.4 bar) Outlet

  • 2.5 scfm (71 LPM) to 1.4 scfm (40 LPM)

Output Pressure Ranges

  • 0 to 60 psig (0 to 4.1 bar)
  • 0 to 30 psig (0 to 2.1 bar)
  • 0 to 15 psig (0 to 1.0 bar)
  • 0 to 5 psig (0 to 0.35 bar)
  • 0 to 100 psig (0 to 6.9 bar)

Total Air Consumption at Maximum Output

  • 3 SCFH (1.42 LPM) to 0.3 SCFH (0.14 LPM)

Port Size

  • 1/16” NPT / 5 mm

Materials of Construction

  • Spring: Music Wire
  • Knob: Acetal Resin
  • Diaphragm: Fluorocarbon with Polyester Fabric
  • Trim: Brass, Acetal
  • Adjusting Screw: -Plated Steel
  • Body: Anodized Aluminum

Size & Weight

  • 0.875” x 0.875” x 3.33” (22.2 x 22.2 x 84.6 mm) 2.2 oz. (0.06 kg)

Mounting Options

  • Pipe or Panel

Documentation

Catalogs

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