Description Specifications Literature Description The Marsh Bellofram Type 70 High-Flow Air Pressure Regulator is expressly designed for applications requiring substantial 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 accurately maintained under varying conditions via an aspirator tube which adjusts air supply in accordance with flow velocity. A balanced supply valve, utilizing a patented Bellofram rolling diaphragm design, makes the regulator virtually immune to changes in supply pressure, and offers millions of cycles.The Type 70 features a rugged, 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 resists scratching, weathering and other physical abuse.Features:High Flow Capacity - Up to 80 SCFM (2266 LPM)Responds Quickly to Minute Changes in Downstream PressureDampening Action of Aspirator Tube Maintains Downstream PressureHonking & Buzzing Eliminated By Action of Integral Baffle and Aspirator TubeStack-up Construction Can Be Disassembled & Serviced without Removal from Air LineOptional Versions Include: Non-Relieving, Corrosive Resistant Epoxy Finish, Tapped Vent, Mounting Brackets, Pressure Gauge, Low Bleed, Check ValveApplications:Large Flow ActuationHigh-flow LouversRollers and WindersHigh-flow Control LoopsCalibration LoopsAny OEM or Industrial Pressure Regulator Application Where a High Degree of Accuracy is Required State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Product Specifications General SpecificationsSensitivity:1/4" (6.4 mm) Water ColumnFlow 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)Output Pressure Range: 2-150 PSIG ( 0.1-10.3 BAR)Total Air Consumption @ Maximum Output:from 1.0 to 12.5 SCFH (0.5-6 LPM)Temperature Range:-40° to 200° F (-40° to 93° C)Port Size:1/2 NPTMaterials of Construction:Body: Diecast aluminum w/ vinyl paintAdjusting Screw: Plated steelTrim: Plated steel, brass, acetal resinDiaphragm: Buna-N w/ polyester fabricKnob: Phenolic plasticSpring: Music wireSize:3.0" X 3.0" X 6.0" (76 X 76 X 152 mm)Preset Pressure:NoTamper Resistant Cover:YesMounting:Pipe, panel, or bracket Literature & Docs Product Specifications Accessories