The Marsh Bellofram Type 70 High-Flow Air Pressure Regulator is meticulously made for applications requiring a considerable flow capacity of up to 80 SCFM (2250 LPM) and accurate pressure controls. Downstream pressure can be set within 0.25 in. (6.3mm) of water column and is precisely sustained under fluctuating conditions by way of an aspirator tube which adjusts air supply in accordance with flow velocity. A balanced supply valve, using a patented Bellofram rolling diaphragm design, makes the regulator essentially immune to alterations in supply pressure, and offers millions of cycles.
The Type 70 features a durable, precision die-cast aluminum housing, and is pressure-tested and chromate-treated for internal corrosion resistance. The regulator housing is finished with vinyl paint which prevents scratching, weathering and other physical wear and tear.
Specifications
Sensitivity
1/4" (6.4 mm) Water Column
Flow Capacity
40 (1113 LPM) 50 (1416 LPM) or 80 SCFM (2266 LPM)
Effect of Supply Pressure variation (25 psig) on Outlet Pressure
< 0.025 PSIG (1.7 BAR)
Exhaust Capacity (5 above psig 20 psig set point)
4 SCFM (113 LPM)
Maximum Supply Pressure
250 PSIG (17.2 BAR)
Effect of Changes in Flow on Regulated Pressure (100 psig/6.9 BAR Supply)
2.5 PSIG (0.2 BAR) over flow 50 SCFM (1416 LPM) (3/8 NPT, 0-30 PSIG / 0-2.1 BAR range, 15 PSIG / 1 BAR set point)
Body: Diecast aluminum with vinyl paint Adjusting Screw: Plated steel Trim: Plated steel, brass, acetal resin Diaphragm: Buna-N with polyester fabric Knob: Phenolic plastic Spring: Music wire
Size
3.0" X 3.0" X 6.0" (76 X 76 X 152 mm)
Weight
1.41 lb. (0.6 kg)
Preset Pressure
No
Tamper Resistant Cover
Yes
Mounting
Pipe, panel, or bracket
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