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 Price  
265-1001 Siemens Powers $116.22 Add to Order
265-1002 Siemens Powers [Contact us for a price or a substitute]
265-1003 Siemens Powers [Contact us for a price or a substitute]
265-1004 Siemens Powers [Contact us for a price or a substitute]
265-1005 Siemens Powers [Contact us for a price or a substitute]
265-1006 Siemens Powers [Contact us for a price or a substitute]
265-1007 Siemens Powers [Contact us for a price or a substitute]
265-1008 Siemens Powers [Contact us for a price or a substitute]
AL-170 Barber-Colman $134.00 Add to Order
AL-171 Barber-Colman [Contact us for a price or a substitute]
AL-180 Barber-Colman $144.00 Add to Order
AL-181 Barber-Colman $144.00 Add to Order
AL-182 Barber-Colman [Contact us for a price or a substitute]
AL-183 Barber-Colman [Contact us for a price or a substitute]
AL-185 Barber-Colman [Contact us for a price or a substitute]
EP101-240 Pneuline [Contact us for a price or a substitute]
EP101-277 Pneuline [Contact us for a price or a substitute]
EP101-480 Pneuline [Contact us for a price or a substitute]
EP102-120 Pneuline [Contact us for a price or a substitute]
EP102-24 Pneuline [Contact us for a price or a substitute]
RP417A1009 Honeywell [Contact us for a price or a substitute]
RP417A1082 Honeywell [Contact us for a price or a substitute]
RP418A1065 Honeywell $154.44 Add to Order
RP418A1073 Honeywell $176.21 Add to Order
RP418A1081 Honeywell $139.34 Add to Order
RP418A1099 Honeywell $192.29 Add to Order
RP418A1107 Honeywell $107.22 Add to Order
RP418B1071 Honeywell $100.77 Add to Order
RP818A1012 Honeywell [Contact us for a price or a substitute]
RP818B1010 Honeywell $106.38 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 Price  
AL-150 Barber-Colman $296.00 Add to Order
AL-151 Barber-Colman $296.00 Add to Order
AL-155 Barber-Colman [Contact us for a price or a substitute]
EP201-120 Pneuline $294.89 Add to Order
EP201-208 Pneuline $278.43 Add to Order
EP201-24 Pneuline $313.71 Add to Order
EP201-240 Pneuline $278.43 Add to Order
EP201-277 Pneuline $307.41 Add to Order
EP201-480 Pneuline $278.43 Add to Order
V-2410-1 Johnson Controls $485.66 Add to Order
V-2410-2 Johnson Controls $413.85 Add to Order
V-2410-3 Johnson Controls $405.74 Add to Order
V-2410-4 Johnson Controls $405.74 Add to Order
V-2410-5 Johnson Controls $426.09 Add to Order
V-2410-6 Johnson Controls $278.43 Add to Order
V11HAA-100 Johnson Controls $294.89 Add to Order
V11HBA-100 Johnson Controls $278.43 Add to Order
V11HCA-100 Johnson Controls $278.43 Add to Order
V11HDA-100 Johnson Controls $278.43 Add to Order
V11HFA-100 Johnson Controls $307.41 Add to Order
V11HGA-100 Johnson Controls $313.71 Add to Order
V11PNA-105 Johnson Controls $313.71 Add to Order
EP201-24DC Pneuline $313.71 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 Price  
EP401-120 Miniature EP Relay 1/8" Threaded Connections [Contact us for a price or a substitute]
EP401-24 Miniature EP Relay 1/8" Threaded Connections [Contact us for a price or a substitute]
EP401-240 Miniature EP Relay 1/8" Threaded Connections [Contact us for a price or a substitute]
EP401-24dc Miniature EP Relay 1/8" Threaded Connections [Contact us for a price or a substitute]
HMPS-1200-121-SPL 1/4'' - 5/32'' barb x 1/8'' MPT Adapter $471.05 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 Price  
PE201 Opens on drop $276.44 Add to Order
PE202 Opens on rise $290.70 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 Price  
PE301-1 1 2 psi $159.17 Add to Order
PE301-2 2 2 psi $256.80 Add to Order
PE301-3 1 0.25 psi $175.77 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 Price  
P10FC-4 Two-stage P/E switch $256.80 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 Price  
P10PA-11 Duplex P/E switch $334.86 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 Price  
243-0001 Powers Diverting-Switching $331.24 Add to Order
243-0009 Powers Booster-Repeater Ratio-1:1 $470.41 Add to Order
243-0011 Powers Averaging $464.92 Add to Order
243-0018 Powers HI-Pressure Selector $152.83 Add to Order
243-0019 Powers Hi & Lo Pressure Selector $430.50 Add to Order
243-0020 Powers Low-Pressure Selector $99.02 Add to Order
C-2040-1 Johnson Averaging $416.37 Add to Order
C-5226-3 Johnson Low-Pressure Selector $97.28 Add to Order
C-5230-2 Johnson Min. Position $255.41 Add to Order
R-2080-1 Johnson Booster-Repeater Ratio-1:1 $261.46 Add to Order
R-3030-1 Johnson Reversing $380.77 Add to Order
RCC-1006 Kreuter Low-Pressure Selector $27.77 Add to Order
RCC-1008 Kreuter HI-Pressure Selector $26.47 Add to Order
RCC-1009 Kreuter Diverting-Switching $83.06 Add to Order
RCC-1111 Kreuter Hi & Lo Pressure Selector $114.65 Add to Order
RCC-1504 Kreuter Reversing $145.94 Add to Order
RCC-1514 Kreuter Averaging [Contact us for a price or a substitute]
RCC-1516 Kreuter Booster-Repeater Ratio-1:1 [Contact us for a price or a substitute]
RP470A1003 Honeywell HI-Pressure Selector $76.03 Add to Order
RP670A1001 Honeywell Diverting-Switching $125.26 Add to Order
RP913A1008 Honeywell Hi & Lo Pressure Selector $338.19 Add to Order
RP970A1008 Honeywell Booster-Repeater Ratio-1:1 $120.58 Add to Order
RP972A1006 Honeywell Reversing $123.65 Add to Order
RP973A1013 Honeywell Averaging [Contact us for a price or a substitute]
RPP100 Pneuline Diverting-Switching $83.06 Add to Order
RPP300 Pneuline Reversing $145.94 Add to Order
RPP400 Pneuline HI-Pressure Selector $26.47 Add to Order
RPP500 Pneuline Low-Pressure Selector $27.77 Add to Order
RPP630 Pneuline Adjustable Ratio 0.1 - 1.0: 1 Ratio [Contact us for a price or a substitute]
RPP650 Pneuline 2:1 Ratio [Contact us for a price or a substitute]
RPP700 Pneuline Booster-Repeater Ratio-1:1 [Contact us for a price or a substitute]
RPP800 Pneuline Averaging [Contact us for a price or a substitute]
RPP900 Pneuline Hi & Lo Pressure Selector $114.65 Add to Order
SP970A1005 Honeywell Min. Position $112.87 Add to Order
V-6135-1 Johnson Diverting-Switching $425.70 Add to Order
HMPS-100-23-SCS Johnson Hi & Lo Pressure Selector $200.44 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
265-1002
[Contact us for a price or a substitute]
265-1003
[Contact us for a price or a substitute]
265-1004
[Contact us for a price or a substitute]
265-1005
[Contact us for a price or a substitute]
265-1006
[Contact us for a price or a substitute]
265-1007
[Contact us for a price or a substitute]
265-1008
[Contact us for a price or a substitute]
AL-155
[Contact us for a price or a substitute]
AL-171
[Contact us for a price or a substitute]
AL-182
[Contact us for a price or a substitute]
AL-183
[Contact us for a price or a substitute]
AL-185
[Contact us for a price or a substitute]
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