Overview
The Ashcroft LPDN4GGV25 is a NEMA 4 industrial pressure switch designed for high-reliability applications requiring precise pressure control. This switch combines dual independent setpoints with Viton sealing for compatibility with challenging media. The L-series architecture supports both safety shutdown and alarm operations across compressor, pump, boiler, and process equipment applications.
Key Features
- Dual independently adjustable setpoints with fixed deadband
- NEMA 4 epoxy-coated aluminum enclosure—watertight protection
- Viton diaphragm—compatible with oils, greases, and hydrocarbons
- 15A contact rating (125/250 Vac); 0.5A auxiliary rating
- Snap-acting SPDT or DPDT micro-switch elements
- Proven 40+ year service record in mills, refineries, and plants
- Straightforward field installation and calibration
Technical Specifications
- Pressure Range: 15–500 PSI
- Setpoint Accuracy: ±1% of span
- Electrical Rating: 15A @ 125/250 Vac; 0.5A auxiliary
- Switch Type: SPDT or DPDT snap-acting
- Enclosure: NEMA 4, epoxy-coated aluminum
- Diaphragm Material: Viton
- Port Connection: 1/4 inch FNPT
- Operating Temperature: −20 to +150°F ambient
- Deadband: Fixed (non-adjustable)
- Series: LP (Low-Profile NEMA 4)
Typical Applications
The Ashcroft LPDN4GGV25 excels in pressure control, safety shutdown, and alarm monitoring across:
- Air and hydraulic compressors
- Centrifugal and reciprocating pumps
- Boiler and burner controls
- Reverse osmosis and water treatment systems
- Industrial filters, presses, and paint spraying equipment
- Turbine and steam system monitoring
- OEM equipment and specialized machinery
Compatibility & Replacements
Compatible With
- Ashcroft LP-Series control systems and networks
- Standard industrial 125 Vac and 250 Vac control circuits
- 24 Vdc auxiliary alarm circuits (0.5A rating)
- Centrifugal pumps, reciprocating pumps, and screw compressors
- Boiler and burner management systems
Replaces / Drop-In Replacement For
The LPDN4GGV25 replaces earlier Ashcroft L-series switches with similar 15 PSI setpoint and Viton construction. Verify exact part numbers and deadband specifications with your system integrator before ordering for legacy equipment.
Works With
- Ashcroft mechanical diaphragm actuator design
- Industrial control standard micro-switch elements
- Standard electrical conduit and junction boxes (NEMA 4 rated)
- Field-adjustable setpoint tools and calibration equipment
