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Diaphragm Pressure Switches - D1S, D2S, D1H, D2H Series

Stripped & Housed Diaphram

D1S, D2S Series Stripped

Suitable for control box installations with adjustments up to 150 psi.

D1H, D2H, D3H Series

NEMA 4 Housing, tamper-proof external adjustment, up to 150 psi.


Barksdale's Diaphragm Pressure Switches offer superior accuracy in a robust package, making them the ideal solution to your industrial pressure control needs. Diaphragm switches are ideal for applications demanding instrument- class accuracy and where pressure pulsations are less than 25 cycles per minute. Available in various pressure ranges up to 150 psi, diaphragm switches are suitable for use in either positive pressure or vacuum applications. Single, dual, and triple circuit models are available. Housed models (D1H & D2H) feature a durable, anodized aluminum enclosure with an integrated 1/2" NPT conduit connector, a tamper-resistant cover for the set point adjustment screws, and are rated to NEMA 4 as a standard. For applications requiring a highly accurate switch in a durable package, Barksdale's Diaphragm Pressure Switches are the ideal choice.

  • Stripped and housed versions available
  • High accuracy
  • Ideal for pressure or vacuum
  • Easy set point adjustment
  • NEMA 4 (Housed Models)
  • Up to 2 set points available in one switch
  • Diaphragm Seal Option Available
  • Pump & compressor monitoring
  • Engine monitoring
  • Machine tools
  • Hydraulic power units
  • Medical equipment
  • Waste management
  • Food & beverage
  • Factory automation
  • Metal working