switching relays
Pneumatic HVAC switching relays. For controlling HVAC actuators, dampers, and valves in a pneumatic control system, using an electric control signal. Shop now!
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243-0001 | Switching Relay, Pneumatic 3-Way, Adj Changeover, 1 / 8" NPT Thread Ports, 9PSI | Siemens
Brand: Siemens
SKU: 243-0001
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243-0018 | Signal Selector, Highest Pressure, Pneumatic, DA, Dual Input, Single Output | Siemens
Brand: Siemens
SKU: 243-0018
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243-0024 | Reverse Acting Relay, Pneumatic, Field Adjustable Spring Range | Siemens
Brand: Siemens
SKU: 243-0024
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141-0575 | Airflow Switch, Differential Static Pressure, SPST, Manual Reset, 1" to 12" WC | Siemens
Brand: Siemens
SKU: 141-0575
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141-0574 | Airflow Switch, Differential Static Pressure, SPDT, Auto Reset, 0.05-1.0 in. WC | Siemens
Brand: Siemens
SKU: 141-0574
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134-1460 | Pressure Electric Switch, Heavy-Duty, SPDT, Snap-Acting, NC, Fixed Diff 2.0 psi | Siemens
Brand: Siemens
SKU: 134-1460
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243-0020 | Signal Selector, Lowest Pressure, Pneumatic, DA, Dual Input, Single Output | Siemens
Brand: Siemens
SKU: 243-0020
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243-0009 | Multi-Purpose Relay, Pneumatic, Heavy Duty, Two-Valve Design, DA and RA | Siemens
Brand: Siemens
SKU: 243-0009
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141-0518 | Airflow Switch, Differential Static Pressure, SPDT, Auto Reset, 1 to 12" WC | Siemens
Brand: Siemens
SKU: 141-0518
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786-0610 | Selector Switch, Commercial, 3-Position | Siemens
Brand: Siemens
SKU: 786-0610
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786-0600 | Selector Switch, Commercial, 2-Position, Click stop for positive positioning | Siemens
Brand: Siemens
SKU: 786-0600
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243-0019 | Signal Selector, Lowest / Highest, Pneumatic, DA, Six-Input, Dual Output | Siemens
Brand: Siemens
SKU: 243-0019
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134-1451 | Pressure Electric Switch, Heavy-Duty, DPST, Snap-Acting, 1.5 to 10 psi | Siemens
Brand: Siemens
SKU: 134-1451
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134-1450 | Pressure Electric Switch, DPST (NO) Switch Action | Siemens
Brand: Siemens
SKU: 134-1450
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243-0011 | Analog Relay, Pneumatic, Heavy Duty, Multi-Function, 1 / 8" NPT Ports | Siemens
Brand: Siemens
SKU: 243-0011
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243-0010 | Balance-Retard Relay, Pneumatic, Heavy Duty, Gradual-Acting, DA and RA | Siemens
Brand: Siemens
SKU: 243-0010
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