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< Marsh Bellofram Group of Companies < Bellofram Precision Controls < Air Regulators < Miniature Regulators < T-91
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Type 91 (100 KB)
Type 91 Miniature Regulators
  • Designed 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
Product Detail:
Type 91
The Type 91 Subminiature Regulator 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.

Type 91 Low Bleed
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 lightweight, pipe mounted. A slotted adjustment screw is available for precision control.
Part Numbers:
 
Part Number
Port Size (NPT)
Set Point Range
BAR
psig
T91
960-240-000
1/16 NPT
0-0.3
0-5
960-236-000
0-1.0
0-15
960-237-000
0-2.1
0-30
960-238-000
0-4.1
0-60
960-239-000
0-6.9
0-100
T91
962-036-000
5mm
0-0.3
0-5
962-083-000
0-1.0
0-15
962-033-000
0-2.1
0-30
962-034-000
0-4.1
0-60
962-035-000
0-6.9
0-100
Options:
Replace the last three digits of the part number with digits from the table below. If more than 2 combination needed, Consult Factory.
OPTION
2
3
10
2
Non-Relieving
002
032
-
3
 Slotted Adj. Screw
003
103
10
Low Bleed
010
Barbed Fittings
Port
Size
Part Number
In/Out Port
1/16-27 NPT
622-000-007
Gauge Port
10-32 UNF
622-000-031
   
Product Contact:
Sales Contact
Technical Contact
Specifications:
TYPE 91 Regulator
Type 91
Low Bleed
Effect of Supply Pressure variation (25 psig) on Outlet Pressure
< 0.25 psig (17.02 mBAR)
< 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)
0.1–0.3 SCFM Typical (2.8-8.5 LPM)
Max. Supply Pressure
250 psig (17.2 BAR)
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)
1.4 SCFM (40 LPM)
Output Pressure Ranges
0-5 psig (0-0.35 BAR) 0-15 psig (0-1.0 BAR) 0-30 psig (0-2.1 BAR)  0-60 psig (0-4.1 BAR)
0-5 psig (0-0.35 BAR) 0-15 psig (0-1.0 BAR) 0-30 psig (0-2.1 BAR)  0-60 psig (0-4.1 BAR)
Total Air Consumption @ Maximum Output
3 SCFH (1.42 LPM)
0.3 SCFH (0.14 LPM)
Port Size
1/16–27 NPT / 5mm
1/16–27 NPT / 5mm
Materials of Construction
Body: Anodized Aluminum Adjusting Screw: Plated Steel Trim: Brass, Acetal Diaphragm:  Fluorocarbon  with Polyester Fabric Knob: Acetal Resin Spring: Music Wire
Body: Anodized Aluminum Adjusting Screw: Plated Steel Trim: Brass, Acetal Diaphragm:  Fluorocarbon  with Polyester Fabric Knob: Acetal Resin Spring: Music Wire
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)
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
Pipe or panel
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