Type 41-2- T41-2 Adjustable Precision Regulator
Type 41 regulators deliver high flow, low droop, and high accuracy with fine adjustment sensitivity for industrial pressure control. Bellofram’s rolling diaphragm improves sensitivity and repeatable regulation in a compact, interchangeable design with multiple mounting options. Built for harsh environments, they feature a precision-cast aluminum housing, are pressure tested, chromate treated for corrosion resistance, and finished with vinyl paint. A soft-seat valve stem tolerates dirt for stable control, an aspirator helps reduce droop at high flow, and the gauge port supports gauge install or an added full-flow outlet. Type 41-2 includes 1/4 NPT ports, a knob, and a bonnet vent port (tap-able for 1/4 NPT). Panel mounting uses one panel hole via the center nut or shoulder holes on 1.25 in (32.7 mm) centers.
Features:
- Superior regulation characteristics
- Rugged, corrosion-resistant construction
- Excellent stability and repeatability
- Self-relieving of excess downstream pressure
- Low droop at high flow
- Mounting options available
- Panel Mounted Applications
- Constant Flow Monitoring
- Corrosive Environments
- Low or Zero Flow Monitoring
- Downstream Flow
Size
2.5" X 2.5" X 5.75"
Port Sizes
1/4"
Sensitivity
1" Water Column (2.5 cm)
Pressure Ranges
0-2 psig (0-0.14 BAR)
0-10 psig (0-0.69 BAR)
0-30 psig (0-2.1 BAR)
0-60 psig (0-4.1 BAR)
0-100 psig (0-6.9 BAR)
0-10 psig (0-0.69 BAR)
0-30 psig (0-2.1 BAR)
0-60 psig (0-4.1 BAR)
0-100 psig (0-6.9 BAR)
Mounting Options
Pipe, Panel or Bracket
Temperature Range
0-160˚F (-18 to 71˚C)
Forward Flow Capacity
25 SCFM (700 LPM)
Maximum Supply Pressure
250 psig (17.2 BAR)
Materials of Construction
Body: Die cast aluminum with vinyl paint
Adjusting Screw: Plated steel
Trim: Plated steel, brass, acetal resin
Diaphragm: Buna-N polyester fabric
Knob: Phenolic Plastic
Spring: Music wire
Adjusting Screw: Plated steel
Trim: Plated steel, brass, acetal resin
Diaphragm: Buna-N polyester fabric
Knob: Phenolic Plastic
Spring: Music wire
Total Air Consumption @ Maximum Output
6 SCFH (2.8 LPM)
Effect of Changes in Flow on Regulated Pressure
1 psig (0.07 BAR) over flow
of 10 SCFM (0-30 psig / 0-2.1 BAR
range, 1/4 NPT, 20 psig / 1.4 BAR set
point)
of 10 SCFM (0-30 psig / 0-2.1 BAR
range, 1/4 NPT, 20 psig / 1.4 BAR set
point)
Exhaust Capacity @ 5 psig (0.4 BAR) above setpoint
0.1–0.45 SCFM Typical 2.8 - 12.7 LPM
Effect of Supply Pressure Variation on Outlet Pressure
±0.35 psig
(24 mBAR)
(24 mBAR)
Find Your Part Number
Not sure? Call for help. Phone: 304-387-1200
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