KF Type Pressure Gauge Switch

I. Product Introduction

The KF pressure gauge switch is a small integrated shut-off throttle valve, suitable for hydraulic oil circuit pressure gauge applications. Its core function is to isolate the pressure gauge from the oil circuit, and it can also adjust the valve core opening to buffer oil pressure surges, reduce violent pointer oscillation of the pressure gauge, and protect gauge components from impact damage; meanwhile, it can be used independently as a small-flow pipeline shut-off valve and throttle valve, suitable for small hydraulic oil circuit on-off pressure regulation. The valve body oil circuit port adopts an internal threaded connection structure, convenient for pipeline connection and installation, suitable for conventional hydraulic pressure measurement oil circuit installation.

II. Professional Pressure Definitions

1. Absolute pressure: The medium pressure measured based on vacuum value;

2. Relative pressure: The medium pressure measured based on local atmospheric pressure. Most pressure measuring instruments on the market detect relative pressure, which is also called gauge pressure;

3. Vacuum degree: When the internal pressure of a container is lower than standard atmospheric pressure, the pressure difference below atmospheric pressure is the vacuum degree.

III. Pressure Gauge Measurement Principle

The pressure gauge has built-in sensing elastic elements, including three types of sensing components: Bourdon tube, diaphragm capsule, and bellows. Medium oil pressure acts on the elastic element to produce deformation; the deformation force is transmitted through the instrument internal transmission conversion mechanism, driving the instrument pointer to rotate and deflect. The real-time medium pressure of the pipeline is intuitively displayed through the pointer deflection angle, completing visual oil circuit pressure detection.

IV. Core Product Features

1. Integrated dual-purpose structure with both shut-off and throttle functions, can isolate pressure gauge oil circuit and regulate oil circuit opening to buffer oil pressure;

2. Excellent instrument protection, adjusting valve port opening can buffer oil pressure pulsation, avoiding pointer oscillation and gauge pressure damage;

3. Internal threaded port design, compatible with standard oil circuit connectors, convenient disassembly and tightening, suitable for integrated hydraulic oil circuit installation;

4. Compact and lightweight, small installation space, suitable for machine tools, small hydraulic stations, and energy storage auxiliary pressure measurement oil circuits;

5. Suitable for small flow conditions, strong versatility, can be used with pressure gauges or independently control small flow oil circuit media;

6. Adaptable to positive and negative pressure conditions, can work with pressure gauges for conventional pressure and negative vacuum degree value detection.

V. Core Applications

Mainly used with various hydraulic system pressure gauges and vacuum pressure gauges for pressure measurement oil circuit on-off isolation and oil pressure buffering stabilization, protecting pressure detection instruments; also independently used in small hydraulic branch circuits as a small-flow medium shut-off and throttle control valve, suitable for industrial machine tools, construction machinery, and hydraulic energy storage oil circuit pressure measurement control.

VI. Usage Precautions

1. When used with pressure gauges, adjust the opening as needed to avoid direct oil pressure impact on the instrument and reduce high-frequency pointer oscillation;

2. Evenly tighten the internal threaded interface to avoid thread misalignment and prevent oil leakage at high-pressure oil circuit interfaces;

3. For negative pressure vacuum conditions, select compatible vacuum-type pressure gauge switches to ensure accurate vacuum degree detection data;

4. Only suitable for small flow oil circuit throttle pressure regulation, not for long-term throttle operation of large flow main oil circuits;

5. Regularly open and close the valve stem during long-term use to prevent oil circuit impurities from accumulating at the valve port, causing opening adjustment jamming;

6. Readings should be based on instrument relative pressure; for negative pressure conditions, verify vacuum degree scale and distinguish between the two types of pressure values;

7. When closing the valve, gently turn the valve stem to avoid violent closure squeezing the sealing surface and shortening valve body service life.