Figure 1.
Model 4500A Outline Dimensions
FAIRCHILD MODEL 4500A
PNEUMATIC VOLUME BOOSTER
Installation, Operation and Maintenance Instructions
You can mount the booster in any position without
affecting its operation.
Clean all pipelines to remove dirt and scale before
installation.
Apply a minimum amount of pipe compound to the
male threads of the fitting only.
Do Not use teflon
tape as a sealant.
Start with the third thread back
and work away from the end of the fitting to avoid
contaminating the booster. Install the booster in the
air line.
The Inlet and Outlet ports are labeled “In” and “Out”.
Tighten all connections securely. Avoid undersized
fittings that will limit the flow through the booster. For
more information, see Figure 1.
INSTALLATION
The Model 4500A reproduces a pneumatic signal in
a 1:1 ratio or in multiplying or dividing ratios.
(Po = Ps
x
R); where Po is output pressure, Ps is
signal pressure, R is ratio.
NOTES: Oil free air must be applied to the
booster. Use a filter to remove dirt and en-
trained liquid in the air line ahead of the booster.
If an air line lubricator is used, it MUST be
located downstream of the booster to avoid
interference with performance.
OPERATION
31/64
12.2
5/16
8.1
3/8
9.5
By-pass
Valve Closed
3 19/64
83.8
5 5/64
128.8
3 13/32
86.6
4 1/2
114.3
By-pass Valve
1:1 Ratio Only
(optional)
Exhaust
Vents (8)
(keep clear)
3/8 NPT
Inlet Port
3 1/2
88.9
(typical)
Face Dim.
1/4 NPT
Gage Ports (2)
(typical)
1/4 NPT
Signal Port
3/8 NPT
Outlet Port
(typical)
1/8 NPT
Remote
Feedback
Port
(optional)
2 53/64
71.8
2 19/64
58.5
1 9/16
39.6
5 53/64
148.2
1
25.4
Hex.
1 13/32
35.9
1/2 NPT Tapped
Exhaust Port
(optional)
