Model 200 Pneumatic Volume Booster

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Details:

The Fairchild 200 Pneumatic Volume Booster reproduces a pneumatic signal in a 1:1 ratio. It is ideally suited for systems that require input isolation or increased forward flow capacity.

Features

  • Control sensitivity to 1" water column variation.
  • Large Supply and Exhaust Valves provide high forward and exhaust flows.
  • A balanced Supply Valve minimizes the effect of supply pressure variation.
  • An Aspirator Tube minimizes downstream pressure droop under flow conditions.
  • A separate Control Chamber isolates the diaphragm from the main flow to eliminate hunting and buzzing.
  • Optional Increased Sensitivity configuration with larger Control Diaphragm for more precision control at low setpoints.
  • Unit construction lets you service the Model 200 without removing it from the line.
  • Mounting Bracket is available.

Operating Principles

When signal pressure on the top of the Signal Diaphragm creates a downward force on the Diaphragm Assembly, the Supply Valve opens. Output pressure flows through the Outlet Port and the Aspirator Tube to the Control Chamber to create an upward force on the bottom of the Control Diaphragm. When the setpoint is reached, the downward force of the signal pressure that acts on the top of the Signal Diaphragm balances with the upward force of the output pressure that acts on the bottom of the Control Diaphragm.

When the output pressure increases above the signal pressure, the Diaphragm Assembly moves upward to close the Supply Valve and open the Exhaust Valve. Excess output pressure exhausts through the Vents in the side of the unit until it reaches the setpoint.

Specifications:

Maximum Supply Pressure
250 psig, [17.0 BAR], (1700 kPa)
Flow Capacity
1800 SCFM (3058 m³/HR) @ 150 psig, [10.0 BAR], (1000 kPa) supply, 20 psig, [1.5 BAR], (150 kPa) set point
Exhaust Capacity
65 SCFM (110.5 m³/HR) where downstream pressure is 5 psig, [.35 BAR], (35 kPa) above 20 psig, [1.5 BAR], (150 kPa) setpoint
Maximum Signal or Output Pressure
150 psig, [10 BAR], (1000 kPa)
Supply Pressure Effect
Less than 0.5 psig, [.035 BAR], (3.5 kPa) for 100 psig, [7.0 BAR], (700 kPa) change in supply pressure
Sensitivity
1” (2.54 cm) Water Column
Ambient Temperature
-40°F to +200°F, (-40°C to 93.3°C)
Materials of Construction
Body and Housing: Aluminum
Trim: Aluminum, Stainless Steel, Zinc Plated Steel, Brass
Diaphragms: Nitrile on Dacron

Catalogue PDF: application/pdf
Operational PDF: application/pdf
Located in: Volume Boosters

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