Danfoss KPS 47 High Pressure Switch for Industrial Systems

A. Product Overview

The Danfoss KPS 47 is a heavy-duty mechanical pressure switch from the KPS series, engineered for very high-pressure applications and systems exposed to strong pressure pulsations. It is typically used for alarm, shutdown, and control functions in critical industrial and marine systems where standard pressure switches are not suitable.

The KPS 47 features a robust metal enclosure with a high ingress protection rating, making it suitable for harsh indoor and outdoor environments. Its construction ensures stable switching performance under vibration, shock, and extreme operating pressures.

B. Working Principle

The KPS 47 operates on a diaphragm-based mechanical pressure sensing principle. System pressure acts on a reinforced diaphragm capsule, which transfers force to a snap-action SPDT electrical contact system. When the pressure reaches the preset value, the contacts change state to activate alarms, stop equipment, or trigger control logic.

An adjustable differential allows controlled pressure cycling, which is essential in systems with rapidly fluctuating or pulsating pressures. This prevents contact chatter, reduces wear, and ensures consistent long-term operation.

C. Key Applications

• Very high-pressure air and gas compressors

• Hydraulic systems with strong pressure pulsations

• Power generation and auxiliary systems

• Diesel engine protection and safety circuits

• Marine engines and onboard utility systems

• Industrial safety and alarm monitoring systems

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D. Why Industries Use This Product

Industries choose the KPS 47 for its ability to handle extreme pressure conditions safely and reliably. It plays a critical role in preventing catastrophic equipment failure caused by overpressure, pressure surges, or unstable operating conditions.

In applications where pressure pulsations are severe, conventional pressure switches may fail prematurely or generate false alarms. The KPS 47 is specifically designed to withstand such environments, helping reduce downtime, improve operational safety, and extend the service life of high-value machinery. Its acceptance in marine and industrial standards further supports compliance and standardization.

E. Suitable Buyers

• High-pressure compressor OEMs

• Hydraulic system manufacturers and integrators

• Power plant and utility engineering teams

• Marine system integrators and shipyards

• Maintenance, reliability, and procurement teams

It is commonly used for replacement in existing KPS installations and preferred in retrofit projects where very high-pressure capability is required.

Quick Answers

What is Danfoss KPS 47?
Danfoss KPS 47 is a very high-pressure mechanical pressure switch designed for industrial and marine systems with severe pressure pulsations.

Where is Danfoss KPS 47 used?
It is used in high-pressure compressors, hydraulic systems, power plants, diesel engines, and marine onboard installations.

Why is Danfoss KPS 47 required in industry?
It protects equipment from extreme overpressure conditions, ensures stable alarm and control functions, and reduces failure risk in harsh environments.

Who typically uses Danfoss KPS 47?
OEMs, system integrators, maintenance teams, power utilities, marine engineers, and industrial procurement professionals.

FAQ Section

Is Danfoss KPS 47 suitable for very high-pressure applications?
Yes. The KPS 47 is specifically designed for very high-pressure systems and is suitable for applications with strong pressure pulsations and demanding operating conditions.

Can KPS 47 be used in hydraulic and compressor systems?
The KPS 47 is widely used in hydraulic circuits and high-pressure compressor installations where stable pressure monitoring and protection are critical.

What is the advantage of adjustable differential in KPS 47?
The adjustable differential helps control pressure cycling, prevents contact chatter, and improves system stability in fluctuating pressure conditions.

Is KPS 47 commonly used as a replacement pressure switch?
Yes. It is commonly selected as a replacement in existing KPS series installations, subject to matching application and pressure requirements.

Does KPS 47 help reduce downtime and safety risks?
By enabling timely alarms or shutdowns during abnormal pressure conditions, the KPS 47 helps protect equipment, improve safety, and reduce unplanned downtime.