TAC Pneumatic Products Catalog

High Pressure Selector Relay and
Low Pressure Selector or Booster Relay
The pressure selector relays are designed for use
in pneumatic control systems where the
application requires the comparison, selection, and
transmission of the higher or lower of two
proportional signals. R432-11 can also be used as
a booster relay.
Features:
• Relays are non-adjustable.
• Precise repeatability characteristics.
• Small size and light weight allow these relays to be
mounted “in-line”, supported by the pneumatic tubing.
• R432-2 HP Selector may be used with “restricted”
pneumatic signals down to 0.5 SCFH airflow.
• R432-11 may be used as Booster Relay or LP Selector.
Model Chart
Model No.
Wholesale
Model No.
R432-2 2372-352
R432-11 2372-351
Functions
Selects the highest of two input
signals.
Selects the lowest of two input
signals. Or may be used as volume
booster.
Dimensions
in. (mm)
1-1/8 dia. x 31/32
(29 x 25)
1-3/16 dia. x 1-3/16
(30 x 30)
Specifications
Action Proportional.
Construction Glass-filled nylon.
Ambient temperature limits 35 to 140�F (2 to 60�C).
Supply air pressure Clean, dry, oil free air required (refer. EN-123).
Nominal 20 psig.
Maximum 30 psig.
Connections Fittings for 1/4 in. O.D. plastic tubing.
Air consumption When used as a volume booster.
Main port 29.4 scim (8 mL/s).
Signal port 0.2 scim (0.1 mL/s).
Mounting In-line.
Dimensions Refer to Model Chart.
R432 Series (2372 Series)
R432-2
High Pressure Selector R432-11
Low Pressure Selector
or Booster Relay
Port Connections
Port Connected to
B Branch output
S1, S2 Input signals
B Branch output
S Input signal
M
Input signal (piped to main air when used
as a volume booster)
F-27383-1 © Copyright 2006 TAC. All Rights Reserved. 79
R432
Series
(2372
Series)