Barksdale D1T-H18Â Stainless Diaphragm Pressure Switch 0.4-18 psi 028 – 1.24 BAR
- BRAND: BARKSDALE
- MODEL: DIT-H18
- MPN: DIT-H18
- SWITCH NO: 0.4-18 PSI
- PRESSURE RANGE: 0.28-1.24 BAR
- ADJUSTABLE RANGE: 60 PSI, 4.14 BAR
The Barksdale D1T-H18 is a robust and reliable diaphragm pressure switch designed for precise pressure monitoring and control in demanding industrial environments. Engineered with a durable stainless steel sensing element, this switch is ideal for applications requiring high resistance to corrosion, vibration, and shock.
Its adjustable set point range of 0.4 to 18 PSI (0.28 to 1.24 BAR) makes it perfectly suited for low-pressure applications such as air compressors, pump control, HVAC systems, and hydraulic power units. The D1T-H18 is a versatile solution for ensuring system safety and automation by providing a reliable electrical response to fluid or gas pressure changes.
Key Features & Benefits
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Stainless Steel Diaphragm:Â Provides excellent corrosion resistance and long service life, making it suitable for use with a wide variety of media, including water, oil, air, and inert gases.
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Wide Adjustable Range: Easily field-adjustable from 0.4 to 18 PSI (0.28 to 1.24 BAR), offering flexibility for various low-pressure set points.
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High-Capacity Switching: Rated for 125 / 480VAC, allowing it to directly control motors, solenoids, and alarms without the need for an intermediate relay in many applications.
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Rugged Construction:Â Built to withstand harsh conditions, including significant vibration and shock, ensuring dependable operation in industrial settings.
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Single-Setting Design (SPDT):Â Features a Single-Pole, Double-Throw (SPDT) switch contact configuration, providing both normally open (NO) and normally closed (NC) operation for maximum wiring flexibility.
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Compact and Serviceable Design:Â The compact form factor allows for easy installation in tight spaces, and its serviceable design facilitates maintenance and inspection.
Technical Specifications
| Feature | Specification |
|---|---|
| Model | Barksdale D1T-H18 |
| Product Type | Diaphragm Pressure Switch |
| Pressure Range | 0.4 – 18 PSI |
| Pressure Range (Metric) | 0.028 – 1.24 BAR |
| Electrical Rating | 125 / 480VAC |
| Switch Action | Single-Pole, Double-Throw (SPDT) |
| Wetted Material | Stainless Steel |
| Process Connection | 1/8″ NPT Female (Standard) |
| Diaphragm Material | Stainless Steel |
| Housing Material | Die-Cast Aluminum |
| Approvals | UL Listed, CSA Certified (Confirm with latest datasheet) |
Common Applications
The Barksdale D1T-H18 is used across numerous industries for critical control and safety functions:
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Industrial Air Compressors:Â Start/stop control and high-pressure cut-off.
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Pump Control:Â Low-pressure cut-off to prevent dry running and high-pressure alarm.
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HVAC/R Systems:Â Fan control, filter monitoring, and pressure safety interlocks.
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Hydraulic & Lubrication Systems:Â Low-pressure alarm and pump sequencing.
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Machine Tooling:Â Coolant flow monitoring and pneumatic system control.
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Water Treatment:Â Pump control and tank level monitoring via pressure













