FAIRCHILD 30252 Model 30BP Midget Precision Back Pressure Regülatör

The Model 30 is designed for applications that require high capacity and accurate process control. A supply valve which is balanced by utilizing a rolling diaphragm, insures a constant output pressure even during wide supply pressure variations. Stability of regulated pressure is maintained under varying flow conditions through the use of an aspirator tube which adjusts the supply valve in accordance with the flow velocity.

Features

• Control sensitivity of 1/4” water column variation allows use in precision applications.

• Pressure Balanced Supply Valve lets the regulator remain unaffected by supply pressure changes.

• Flow of up to 40 SCFM with 100 psig supply allows use in applications with high flow requirements.

• An aspirator tube compensates downstream pressure droop under flow conditions.

• A separate Control Chamber isolates the diaphragm from the main flow to eliminate hunting and buzzing.

• Unit construction lets you service the Model 30 without removing it from the line.

• Canadian Registration Number (CRN) Certification for all territories and provinces.

Specifications

Supply Pressure: 250 psig, [17.0 BAR], (1700 kPa) Maximum

Flow Capacity: 40 SCFM (68 m3/HR) @ 100 psig, [7.0 BAR], (700 kPa)

supply and 20 psig, [1.5 BAR], (150 kPa) setpoint

Exhaust Capacity: 2.0 SCFM (3.4 m3/HR) where downstream pressure is

5 psig, [.35 BAR], (35 kPa) above 20 psig, [1.5 BAR],

(150 kPa) setpoint

Supply Pressure Effect:Less than 0.2 psig, [.014 BAR], (.14 kPa) for 100 psig,

[7.0 BAR], (700 kPa) change in supply pressure

Sensitivity: 1/4″ (.63cm) Water Column

Ambient Temperature: -40° F to +200°F, (-40°C to 93.3°C)

Hazardous Locations: Acceptable for use in Zones 1 and 2 for gas atmosphere:

Groups IIA and IIB and Zones 21 and 22 for dust atmospheres.

Materials of Construction:

Body and Housing . . . . . . . . . . . . . . . . . . . . . . . . Aluminum

Diaphragms. . . . . . . . . . . . . . . . . . . . . . . . Nitrile on Dacron

Trim. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Brass