GD-Series NEMA 4 Differential Pressure Switch

The Ashcroft® GD differential pressure switch is designed for use on tough applications requiring a 316L stainless steel enclosure. The straight forward design allows for easy field installation and access to the microswitches for wiring. Proven technology provides a stable and reliable switch ideal for pressure control, shutdown or alarm operations when two independent set points or adjustable deadbands are required.

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Key Features:
  • Designed for easy field installation and wiring of microswitches
  • Ranges from 30 in. H2O to 400 psid
  • Wide selection of switch elements
  • Stainless steel, Buna, Viton, Teflon and Monel diaphragms available for compatibility
  • Adjustable setpoints from 15%-100% of range
  • Fixed or adjustable deadbands
Applications:

Process Market:
Refineries
Chemical and Petrochemical Plants
Pulp and Paper Mills
Power Plants
Steel Mills
Water and Sewage Treatment Facilities

Industrial Market:
Pumps, Compressors and Turbines
Dairies and Breweries
Boilers and Burners
Reverse Osmosis Systems
Filters and Presses
Paint Spraying Equipment
Specialized OEM Equipment

Medical and Life Sciences Market:
Pharmaceutical Plants

Specifications

Certifications & Approvals

Data Sheets & Instruction Manuals

Drawings & Product/Technical Information

Setpoint Repeatability (Accuracy)
±1% of span (Additional setpoint shift of ±1% of range per 50°F from initial setpoint set at 70°F typical)

Setpoint
Independent setpoint, fixed deadband
Single setpoint, adjustable deadband
Single setpoint, fixed deadband

Deadband
Fixed or adjustable

Enclosure Ratings
NEMA 4X / IP66

Enclosure Material
Cast aluminum

Pressure Connection
¼ NPT Female (STD.)

Electrical Termination
¾ NPT Female (STD.)

Diaphragm/Actuator Material
Buna N, Viton or Teflon

Pressure Ranges
0 - 6 in. H2O to 0 - 150 in. H2O

Ambient Temperature Range
-20°F to 180°F (-29°C to 82°C)

Resources & Tools

Materials Selector

Use the selector to review compatible wetted materials and requirements of your application.

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Unit Converter

Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.

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Product Information

To learn more about the technical details for options available, review our product information (PI) pages.

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