P A C K A G I N G -- Items on this page are ALL Cartoned.

AIR PRESSURE DIFFERENTIAL SWITCHES

All Non Adjustable units are PRESET AT .05" W.C. Adjustable units can be set as high as 12" W.C. All have SPDT switches to make on either rise or fall or static pressure. Switches have either quick connect for .250" (QC) or screw terminals. Some electrical connections are enclosed in a conduit box. Connections to air stream are either slip (for 1/4" plastic tubing with matching probe) or nut and ferrule (for 1/4" metal tubing.)

All switches are rated 300VA pilot duty or 10A Non Inductive to 277V. The diaphragm of all units must be mounted in a vertical plane. Units are individually cartoned. Units with slip fittings have probe and 12" of plastic tubing included.

Model Number	Description	RH3
RH-3A	Adjustable, nut and ferrules, conduit box
RH-1505-DO DFS-221	Non Adjustable with slip tubing and probe
RH-1505-DOB DFS-448	Same as RH-1505-DO, but flush mount with slip tubing and probe
Pitot Tube #1729	4" Air flow probe with mounting flange
Tubing	Heavy U.L. Listed plastic tubing for slip-fit Air Switches - price per foot