Type 41-2- T41-2 Adjustable Precision Regulator
The Bellofram Precision Controls Type 41-2 is an adjustable precision pressure regulator designed for high-flow, low-droop pneumatic control with fine pressure adjustment. A Bellofram rolling diaphragm, soft-seat valve stem, and aspirator support stable downstream pressure as flow changes, while maximum supply pressure is 250 psig. The Type 41-2 uses 1/4-inch NPT ports and includes a bonnet vent port that can be tapped for 1/4-inch NPT connection, distinguishing it from the Type 41-1. It is suited to panel-mounted systems, constant- or low-flow monitoring, downstream flow control, and corrosive industrial environments.
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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