Pneumatic Gradual Switches Selector Relay

These switches are designed to be compatible with any brand of pneumatic control system. Replaceable scale plates give you a variety of system functions. Standardizing on these switches will reduce your costs and help you become familiar with a single replacement for all uses.

Universal Pneumatic Gradual Switch

This manual switch is used to provide a variable pneumatic signal to any brand of pneumatic device. Used for remote positioning or as a testing device.

Part # Grad Switch  
HDO-1101 BLANK, Scale plates not included Call... Add to Order
HDO-1102 0 to 100%, Scale plates not included Call... Add to Order
HDO-1103 Increase CW Arrow, Scale plates not included Call... Add to Order
YMC-1001 Pne. Grad. Switch Call... Add to Order

2 Position Pneumatic Selector Switches

This manual selector switch is used to direct one or two signals to either one of two ports. Ten scale plates available to perform a variety of functions. Vented and non-vented models are available.

Part # 2-Pos Selector Switch  
HDO-1201 Occ-Unocc, Scale plates not included Call... Add to Order
HDO-1202 Summer-Winter, Scale plates not included Call... Add to Order
HDO-1203 On-Off, Scale plates not included Call... Add to Order
HDO-1205 Open-Close, Scale plates not included Call... Add to Order
HDO-1206 1-2, Scale plates not included Call... Add to Order
HDO-1207 Day-Night, Scale plates not included Call... Add to Order
HDO-1208 Heat-Cool, Scale plates not included Call... Add to Order
HDO-1209 Manual-Auto, Scale plates not included Call... Add to Order
YMC-2001 DPDT-Non-Vented Call... Add to Order
YMC-2002 DPDT-Vented Call... Add to Order

3 Position Pneumatic Selector Switches

This manual selector switch is used to switch a pneumatic signal to one of three ports. Eight scale plates available to perform a variety of functions. Vented and non-vented models available.

Part # 3-Pos Selector Switch  
HDO-1301 1-2-3, Scale plates not included Call... Add to Order
HDO-1302 On-Auto-Off, Scale plates not included Call... Add to Order
HDO-1303 Day-Auto-Night, Scale plates not included Call... Add to Order
HDO-1305 Heat-Auto-Cool, Scale plates not included Call... Add to Order
HDO-1306 Summ.-Auto-Wint., Scale plates not included Call... Add to Order
HDO-1307 Open-Auto-Close, Scale plates not included Call... Add to Order
YMC-3001 3 Position Non-Vent Call... Add to Order
YMC-3002 3 Position Vented Call... Add to Order

6 Position Pneumatic Selector Switch

This manual selector switch can be used to switch a pneumatic signal to one of six ports. It’s economical cost make it a good choice for any multiple switching function of six or less positions.

Part # 6-Pos Selector Switch  
HDO-1601 1-2-3-4-5-6, Scale plates not included Call... Add to Order
YMC-6001 6-Pos. Non-Vented Call... Add to Order