Pneumatic HVAC Relays

Electric–Pneumatic Relays: Plastic

The EP101 series is a plastic 3-way valve with molded barbed connections for 1/4'' pneumatic tubing. They can be wall or panel mounted. Lighter and more compact than our EP201 series. Ports are marked 1-2-3. Flow is 600 SCIM at 20psi. The Pneuline models are an exact substitute for the brands on this selection chart:

Part # Relay MFG  
265-1001 Siemens Powers Call... Add to Order
265-1002 Siemens Powers Call... Add to Order
265-1003 Siemens Powers Call... Add to Order
265-1004 Siemens Powers Call... Add to Order
265-1005 Siemens Powers Call... Add to Order
265-1006 Siemens Powers Call... Add to Order
265-1007 Siemens Powers Call... Add to Order
265-1008 Siemens Powers Call... Add to Order
AL-170 Barber-Colman Call... Add to Order
AL-171 Barber-Colman Call... Add to Order
AL-180 Barber-Colman Call... Add to Order
AL-181 Barber-Colman Call... Add to Order
AL-182 Barber-Colman Call... Add to Order
AL-183 Barber-Colman Call... Add to Order
AL-185 Barber-Colman Call... Add to Order
EP101-240 Pneuline Call... Add to Order
EP101-277 Pneuline Call... Add to Order
EP101-480 Pneuline Call... Add to Order
EP102-120 Pneuline Call... Add to Order
EP102-24 Pneuline Call... Add to Order
RP417A1009 Honeywell Call... Add to Order
RP417A1082 Honeywell Call... Add to Order
RP418A1065 Honeywell Call... Add to Order
RP418A1073 Honeywell Call... Add to Order
RP418A1081 Honeywell Call... Add to Order
RP418A1099 Honeywell Call... Add to Order
RP418A1107 Honeywell Call... Add to Order
RP418B1071 Honeywell Call... Add to Order
RP818A1012 Honeywell Call... Add to Order
RP818B1010 Honeywell Call... Add to Order

Electric–Pneumatic Relay: Metal

Change branch or main signals from one source or pressure to another with this compact, 3-way diverting solenoid valve. Ideal for occupied– unoccupied, outdoor changeover, summer–winter or many other uses.

The EP201 is a cast metal valve with 1/8'' NPT ports marked N.O., N.C., and common. Includes two barbed fittings for either 1/4'' or 5/32'' pneumatic tube. The Pneuline models are an exact substitute for the devices in this selection chart:

Part # Relay MFR  
AL-150 Barber-Colman Call... Add to Order
AL-151 Barber-Colman Call... Add to Order
AL-155 Barber-Colman Call... Add to Order
EP201-120 Pneuline Call... Add to Order
EP201-208 Pneuline Call... Add to Order
EP201-24 Pneuline Call... Add to Order
EP201-240 Pneuline Call... Add to Order
EP201-277 Pneuline Call... Add to Order
EP201-480 Pneuline Call... Add to Order
V-2410-1 Johnson Controls Call... Add to Order
V-2410-2 Johnson Controls Call... Add to Order
V-2410-3 Johnson Controls Call... Add to Order
V-2410-4 Johnson Controls Call... Add to Order
V-2410-5 Johnson Controls Call... Add to Order
V-2410-6 Johnson Controls Call... Add to Order
V11HAA-100 Johnson Controls Call... Add to Order
V11HBA-100 Johnson Controls Call... Add to Order
V11HCA-100 Johnson Controls Call... Add to Order
V11HDA-100 Johnson Controls Call... Add to Order
V11HFA-100 Johnson Controls Call... Add to Order
V11HGA-100 Johnson Controls Call... Add to Order
V11PNA-105 Johnson Controls Call... Add to Order
EP201-24DC Pneuline Call... Add to Order

Electric–Pneumatic Relay: Miniature

  • High capacity miniature EP relay
  • Metal body at a popular price
  • Compact size is convenient for panel mounting
  • For up to 120psi
  • 3-way, 1/8'' FPT connection
Part # Miniature EP Relay  
EP401-120 Miniature EP Relay 1/8" Threaded Connections Call... Add to Order
EP401-24 Miniature EP Relay 1/8" Threaded Connections Call... Add to Order
EP401-240 Miniature EP Relay 1/8" Threaded Connections Call... Add to Order
EP401-24dc Miniature EP Relay 1/8" Threaded Connections Call... Add to Order
HMPS-1200-121-SPL 1/4'' - 5/32'' barb x 1/8'' MPT Adapter Call... Add to Order

Pneumatic–Electric Relay: DPST

The PE201 closes or opens an electrical circuit using a predetermined air pressure signal. Typical applications includes the control of air conditioners, fans, electrical heating

Connection: 1/4'' barb elements, ducts furnaces and more.
Switch: 12A
Signal: 3 to 30 psi adjustable

Part # Switches  
PE201 Opens on drop Call... Add to Order
PE202 Opens on rise Call... Add to Order

Pneumatic–Electric Relay: SPDT

The PE301 series switches are SPDT snap switch activated by an adjustable pneumatic signal. Typical uses are to activate fans, heaters, pumps, chillers, alarms and more.

Connection: 1/4'' barb
Switch:
16A
Signal: 3 to 30 psi adjustable

Part # Stages Differential  
PE301-1 1 2 psi Call... Add to Order
PE301-2 2 2 psi Call... Add to Order
PE301-3 1 0.25 psi Call... Add to Order

Pneumatic–Electric Relay: Two-stage

The P10FC-4 provides two-stage pressure electric control for self-contained heating-cooling unit ventilators with mechanical refrigeration.

Connection: 1/4'' barb

  • Features two enclosed snap-acting SPDT switches with color-coded terminals
  • Includes a calibrated indicator scale for the high trip point
Part # 2-Stage EP Switch  
P10FC-4 Two-stage P/E switch Call... Add to Order

Pneumatic–Electric Relay: Duplex

The P10PA provides continuous fan operation and damper control during day cycle and intermittent fan operation during night cycle. It has Two of the switches are mechanically joined and operate together.

  • Three enclosed normally closed SPST switches
  • Factory calibration of the mechanically joined switches
  • Two calibrated indicator scales to display high trip points

3-SPST 6A Switches: 1 opens high 6#, 2 & 3 open high 18# three normally closed SPST switches.
Connection:
1/4'' barb
Signal: 3 to 30 psi adjustable

Part # Duplex EP Switch  
P10PA-11 Duplex P/E switch Call... Add to Order

Pneumatic Relays

Pneumatic relays perform very useful functions in control systems. All brands work in the same pneumatic signals and can be easily interchanged. Don’t be stuck on a single brand. Pneuline Controls perform the same function just as reliably as brands costing more than double. Standardize and stock one model and use it as your universal replacement. This chart will show you the Pneuline model you need.

Part # MFG Relay Type  
243-0001 Powers Diverting-Switching Call... Add to Order
243-0009 Powers Booster-Repeater Ratio-1:1 Call... Add to Order
243-0011 Powers Averaging Call... Add to Order
243-0018 Powers HI-Pressure Selector Call... Add to Order
243-0019 Powers Hi & Lo Pressure Selector Call... Add to Order
243-0020 Powers Low-Pressure Selector Call... Add to Order
C-2040-1 Johnson Averaging Call... Add to Order
C-5226-3 Johnson Low-Pressure Selector Call... Add to Order
C-5230-2 Johnson Min. Position Call... Add to Order
R-2080-1 Johnson Booster-Repeater Ratio-1:1 Call... Add to Order
R-3030-1 Johnson Reversing Call... Add to Order
RCC-1006 Kreuter Low-Pressure Selector Call... Add to Order
RCC-1008 Kreuter HI-Pressure Selector Call... Add to Order
RCC-1009 Kreuter Diverting-Switching Call... Add to Order
RCC-1111 Kreuter Hi & Lo Pressure Selector Call... Add to Order
RCC-1504 Kreuter Reversing Call... Add to Order
RCC-1514 Kreuter Averaging Call... Add to Order
RCC-1516 Kreuter Booster-Repeater Ratio-1:1 Call... Add to Order
RP470A1003 Honeywell HI-Pressure Selector Call... Add to Order
RP670A1001 Honeywell Diverting-Switching Call... Add to Order
RP913A1008 Honeywell Hi & Lo Pressure Selector Call... Add to Order
RP970A1008 Honeywell Booster-Repeater Ratio-1:1 Call... Add to Order
RP972A1006 Honeywell Reversing Call... Add to Order
RP973A1013 Honeywell Averaging Call... Add to Order
RPP100 Pneuline Diverting-Switching Call... Add to Order
RPP300 Pneuline Reversing Call... Add to Order
RPP400 Pneuline HI-Pressure Selector Call... Add to Order
RPP500 Pneuline Low-Pressure Selector Call... Add to Order
RPP630 Pneuline Adjustable Ratio 0.1 - 1.0: 1 Ratio Call... Add to Order
RPP650 Pneuline 2:1 Ratio Call... Add to Order
RPP700 Pneuline Booster-Repeater Ratio-1:1 Call... Add to Order
RPP800 Pneuline Averaging Call... Add to Order
RPP900 Pneuline Hi & Lo Pressure Selector Call... Add to Order
SP970A1005 Honeywell Min. Position Call... Add to Order
V-6135-1 Johnson Diverting-Switching Call... Add to Order
HMPS-100-23-SCS Johnson Hi & Lo Pressure Selector Call... Add to Order

Low Pressure Selector

Low Pressure Selectors pass the lowest of two separate signals. A common use for these relays is to select the coldest of two zones to control a heating valve.

ORDER # Replaces
RPP500 Honeywell #RP970A
Johnson #C-5226
L&G Powers #243-0200
Robertshaw #2372-351
Barber-Colman #AK-51642

Hi Pressure Selector

A High Pressure Selector will pass the highest of two different pressure signals. It is often used to select the hottest of two thermostat signals to control a cooling valve.

ORDER # Replaces
RPP400 Honeywell #RP470A
Johnson #C-5226
L&G Powers #243-0020
Robertshaw #2372-351
Barber-Colman #AK-50301

Diverting Relay (Switching)

A Diverting Relay (or Switching Relay) acts similarly to an electric SPDT relay, but it is switched (energized) by a pneumatic signal. Adjustable set point 3-23#psi, 5psi differential

ORDER # Replaces
RPP100 Honeywell #RP670A
Johnson #V-6133
L&G Powers #243-0001
Robertshaw #2353-503
Barber-Colman #AK-50301

Reversing Relay

A Reversing Relay reverses the action of the signal coming into the relay. For example, a direct acting signal is converted into a reverse acting signal. As the input signal increases in pressure, the output is lowered.

ORDER # Replaces
RPP300 Honeywell #RP972A
Johnson #R-3030
Robertshaw #2360-501
Barber-Colman #AK-40613

Ratio Relay

A Ratio Relay is a relay that increases the output at a preset ratio to the change at the input. The adjustable ratio relay is used to slow down the rate of change. The other relay is used for speeding up the rate of pressure change at a fixed ratio.

ORDER # Replaces
RPP650 2:1 Ratio Honeywell #RP971A
Johnson #C-202-1
Robertshaw #238-501
Barber-Colman #AK-50703
RPP630 Adjustable Ratio 0.1 - 1.0: 1 Ratio

Booster Relay or (Amplifying Relay)

Booster Relays (or Amplifying Relays) increase the volume or capacity of a pressure signal without increasing the pressure. They are used to refresh a low volume signal or a signal being sent over a long distance.

ORDER # Replaces
RPP700 Honeywell #RP970A
Johnson #R-2080
Robertshaw #2372-501
Barber-Colman #AK-40603