Manufacturer: 	PresAirTrol Switch Type: 	Vacuum Vacuum Switch Amperage: 	21A Plumbing Connection Size: 	1/8" Plumbing Connection Type: 	Male Pipe Thread (mpt), Male National Pipe Thread (mnpt) Pressure Switch Amperage: 	21A Pole/Throw: 	Single Pole Double Throw (spdt) Pan Material: 	Plastic