Barksdale D2T-H18SS Vacuum Or Pressure Switch

The Barksdale D2T-H18SS Vacuum or Pressure Switch is a dual-setpoint diaphragm switch designed for precise on/off control in both vacuum and positive-pressure service. It features an adjustable range of 0.4 to 18 psi and a 1/4" NPT female process connection for easy integration into pumps, compressors, blowers, and other process equipment. Constructed with 304 stainless steel wetted parts, it resists corrosion in demanding environments, while offering two SPDT switching circuits for independent control or monitoring of dual thresholds. Electrical ratings support common industrial applications: up to 10 A at 125/250 VAC and up to 3 A at 480 VAC. The H18SS designation denotes the stainless-wetted variant within the D2T family, typically supplied in a housed configuration with a terminal block for convenient wiring. Expect repeatable actuation with about 0.5% of the adjustable range accuracy, enabling stable operation as system pressure changes. This switch is well-suited for use with vacuum pumps, air-handling equipment, filtration systems, and general process automation where robust metal-wetted sensing and reliable dual-threshold control are required.