10 800.727.5646 • www.marshbellofram.com Air Regulators Features • Superior regulation characteristics • Rugged, corrosion-resistant construction • Excellent stability and repeatability • Self-relieving of excess down stream pressure • Low droop at high flow • Mounting options available Description The Type 41 regulators are designed for applications requiring high flow capacity, low droop, high accuracy, and fine adjustment sensitivity. The use of Bellofram’s rolling diaphragm provides greater sensitivity and improved accuracy. In addition, Type 41 regulators offer reduced over-all size and several mounting options, providing direct interchangeability with more expensive competitors’ units. Ruggedly designed and constructed, the Type 41 regulators have housings of precision-cast aluminum. They are pressure tested, and are chromate treated for internal corrosion resistance. Every regulator is finished with vinyl paint which resists scratching, weathering and other physical abuse. Careful design and quality materials throughout assure long, trouble-free operation in the most difficult industrial environments. A rubberized, soft-seat valve stem provides stability and “forgives” dirt and other foreign matter. An aspirator maintains downstream pressure and compensates for droop when high flow occurs. The gauge port is convenient for gauge installation and can also be used as an additional full flow outlet. The design of these regulators is especially well suited for panel applications due to ease of mounting (only one panel hole required), small size, adjustment sensitivity (32 threads per inch on the adjusting screw), and knob. Type 41-1 & Type 41-2 Pressure Regulator Series Models The Type 41 comes in two versions, Type 41-1 and Type 41-2. These two regulators offer the same performance in two slightly different packages. Type 41-1 This unit comes standard with 14 NPT ports and a knob, and can be panel mounted using either the center nut or the threaded shoulder holes, spaced 1.5 in. (38.1 mm) center-to-center. Type 41-2 This unit comes standard with 14 NPT ports, a knob and a bonnet vent port which can be tapped for a 14 NPT fitting if desired. It can be panel mounted using either the center nut or the threaded shoulder holes, spaced 1.25 in. (32.7 mm) center-to-center. Type 41-1 Pressure Regulator Series Type 41-2 Pressure Regulator Series Type 41: Regulated Pressure VS. Flow 25 1.7 20 1.4 15 1.0 10 0.7 5 0.3 0 0 Regulated PRessuRe SCFM 0 5 10 15 20 25 30 LPM 0 142 283 425 566 708 850 FoRwaRd Flow PSIG BAR

www.marshbellofram.com • 800.727.5646 11 Air Regulators T41 Regulator Specifications Sensitivity 1" Water Column (2.5 cm) Flow Capacity @ 100 psig (6.9 BAR) Supply and 20 psig (1.4 BAR) outlet 25 SCFM (700 LPM) Effect of Supply Pressure Variation (25 psig/1.7 BAR) on Outlet Pressure ±0.35 PSIG (24 mBAR) Exhaust Capacity 5 psig (0.35 BAR) above 20 psig set point 0.1–0.45 SCFM Typical 2.8 - 12.7 LPM Max Supply Pressure 250 PSIG (17.2 BAR) Effect of Changes in Flow on Regulated Pressure (100 psig / 6.9 BAR Supply) 1 psig (0.07 BAR) over flow of 10 SCFM (0-30 psig / 0-2.1 BAR range, 1/4 NPT, 20 psig...

12 800.727.5646 • www.marshbellofram.com Air Regulators Type 41 Ordering Information Part Number Port Size (NPT) Set Point Range BAR psig T41-1 960-113-000 1/4 0-0.14 0-2 960-114-000 0-0.69 0-10 960-170-000 0-2.1 0-30 960-171-000 0-4.1 0-60 960-172-000 0-6.9 0-100 T41-2 960-115-000 1/4 0-0.14 0-2 960-116-000 0-0.69 0-10 960-181-000 0-2.1 0-30 960-182-000 0-4.1 0-60 960-183-000 0-6.9 0-100 Type 41 Option Ordering Matrix Replace last three digits of part number with digits from table below. Option 1 2 5 6 7 8 1 Fluorocarbon Pintle 001 021 051 061 071 081 2 Non-Relieving 002 052 062 072 082 5 Epoxy...