Danfoss KP 38 Pressure Switch for High Pressure Industrial Systems

A. Product Overview

The Danfoss KP 38 is a single pressure switch engineered for high-pressure industrial applications. It is part of the Danfoss KP series, known for robust mechanical design and long-term operational reliability in harsh environments.
KP 38 is primarily used where elevated system pressures must be monitored accurately to protect compressors, pipelines, and pressure equipment from unsafe operating conditions.

In industrial refrigeration, HVAC, and utility systems, uncontrolled high pressure can lead to equipment damage, safety hazards, and unplanned shutdowns. KP 38 provides a proven, standardized pressure monitoring solution widely accepted in industrial designs.

B. Working Principle

The KP 38 operates using a mechanical bellows-based pressure sensing element. When system pressure reaches the preset cut-out point, the internal snap-action contact mechanism changes state, triggering shutdown, alarm, or control logic.
The snap-action design ensures precise switching with minimal contact wear, even under vibration-prone industrial conditions. Pressure settings and differential are adjustable, allowing maintenance teams to configure the switch according to system safety requirements.

C. Key Applications

• High-pressure industrial refrigeration systems

• HVAC chillers and condenser units

• Compressor discharge pressure monitoring

• Process cooling and utility systems

• Industrial gas and air pressure systems

• Chemical and food processing plants

D. Why Industries Use This Product

Industries use the Danfoss KP 38 to prevent overpressure-related failures and ensure safe operation of critical equipment. It plays a vital role in protecting compressors, pressure vessels, and piping networks from mechanical stress and overheating.
Without a reliable high-pressure switch, systems are exposed to risks such as compressor damage, refrigerant leaks, safety valve activation, and production downtime. KP 38 helps maintain operational continuity, supports compliance with standard industrial safety practices, and reduces maintenance costs through preventive protection.

E. Suitable Buyers

• Industrial refrigeration and HVAC OEMs

• EPC contractors executing cooling and utility projects

• Plant maintenance and utilities teams

• Process industries with high-pressure systems

• Procurement teams sourcing standardized pressure switch replacements

KP 38 is commonly used for replacement in existing KP series installations and is preferred in retrofit projects requiring proven, field-tested pressure control devices.

Quick Answers

What is Danfoss KP 38?
Danfoss KP 38 is a high-pressure industrial pressure switch used for monitoring and safety control in refrigeration and HVAC systems.

Where is Danfoss KP 38 used?
It is used in industrial refrigeration plants, HVAC chillers, compressor systems, and high-pressure utility applications.

Why is Danfoss KP 38 required in industry?
It prevents equipment damage and safety risks by providing reliable high-pressure cut-out and system protection.

Who typically uses Danfoss KP 38?
OEMs, EPC contractors, plant maintenance teams, and industrial procurement departments commonly use KP 38.

FAQ Section

Is Danfoss KP 38 suitable for high-pressure industrial systems?
Yes, KP 38 is designed specifically for industrial applications where higher pressure monitoring and protection are required to maintain system safety and reliability.

Can KP 38 be used as a replacement for other KP series pressure switches?
KP 38 can be used as a replacement where the system operating pressure range matches KP 38 requirements, subject to engineering verification.

What type of systems typically require KP 38?
KP 38 is commonly installed in refrigeration compressors, HVAC condensers, and industrial utility systems operating under higher pressure conditions.

Does KP 38 support continuous industrial operation?
Yes, it is designed for continuous-duty industrial environments with mechanical reliability suitable for round-the-clock operation.

Is KP 38 suitable for retrofit and modernization projects?
KP 38 is widely accepted in retrofit projects due to its standardized design and compatibility with existing KP series installations.