The Honeywell SP470A1018 is a manually operated pneumatic selector switch. It can be line or panel mounted. It can be used to switch between devices such as thermostats, dampers, and/or valves.
Johnson Controls T-4002-201 - Pneumatic Thermostat, Single Temp High Volume Output SKU: T-4002-201 Price: $65.36
TAC-Invensys MK-2690 - Pneumatic Valve Actuator SKU: MK-2690 Price: $44.68
Functional Devices RIB2401SB - RIB Relay, Power Control Enclosed 20 amp SPST-N/O Plus Override SKU: RIB2401SB Price: $21.75
Honeywell C7027A1072 Minipeeper Ultraviolet Scanner SKU: C7027A1072 Price: $103.63
Invensys HC-201 - Electric Controller, Two Position SKU: HC-201 Price: $101.18