T70 BP High Flow Back Pressure Regulator Valve
Brand: Marsh Bellofram Group of CompaniesThe Type 70 Back Pressure Regulator functions as a high flow, high precision pneumatic relief valve with an adjustable setpoint.
The Type 70BP back pressure regulator can be used in place of a standard relief valve to improve pressure control while maintaining protection against over pressurization, as in supply pressure lines to instruments and other control devices. It is most often used in conjunction with a diaphragm-operated valve and bleed orifice as a compressor controller.
Excess compressor pressure is relieved through the back pressure regulator to actuate the intake restricting valve. When the back pressure regulator is shut off, downstream air escapes through the bleed orifice, allowing the restricting valve to open.
Features
- High Flow Capacity – Up to 50 SCFM (1400 LPM)
- Accurate Pressure Controls
- May Be Used in Place of a Standard Relief Valve
- Units Respond Quickly to Minute Upstream Pressure Changes
- Stack-up Construction May Be Disassembled and Service Without Removal from Air Line
Specifications
Body Material
- Die Cast Aluminum with Vinyl Paint
Sensitivity
- 1/8 inH₂O (3.2 mm)
Supply Pressure Effect
- < 0.025 psig (1.7 bar)
Relief
- Low Bleed
- Non-Relieving
Mounting
- Bracket
- Pipe or Panel
Flow Capacity
- 40 scfm (1,113 LPM)
- 50 scfm (1,416 LPM)
- 80 scfm (2,266 LPM)
Port Size
- 1/2"
- 1/4"
- 3/8"
Supply Pressure - Maximum
- bar: 17.2
- kPa: 1,723
- psig: 250
Temperature Range
- -40° to 93° C (-40° to 200° F)
Exhaust Capacity
- T70: 4 scfm (113 LPM)
Adjusting Screw
- Plated Steel
Trim Material
- Plated Steel
- Acetal Resin
- Brass
Diaphragm Material
- Buna-N with Polyester Fabric
Knob
- Phenolic Plastic
Spring Material
- Music Wire
Output Pressure Range
- bar: 0 to 13.7
- kPa: 0 to 1,379
- psig: 0 to 200
Actuator Type
- Knob Adjust (Plastic)
- Screwdriver Adjust
- Tamper-Proof
Size
- 3.0" x 3.0" x 6.0" (76 x 76 x 152 mm)
- Precision High-Flow Back Pressure Relief
- Precise Control of Paper Machinery Felt Guides
- Pneumatic Clutch Regulation
- Pressure Cylinder Control
- Protection of Instrument and Control Device Supply Pressure Line