Taiwan DTL Plug Valve

In modern hydraulic systems, cartridge valves, as core control components, are widely used in injection molding machines, hydraulic stamping equipment, construction machinery and industrial automation systems. Taiwan's DTL gate valves are widely adopted by many industries due to their compact structure, sensitive operation and integration advantages. However, in actual use, improper operation and maintenance may lead to performance degradation or even malfunctions. This article, drawing on the professional experience of Kunshan Lianlai Hydraulic Machinery Co., LTD., comprehensively analyzes common problems and solutions of DTL gate valves in Taiwan, providing a reference for the optimization of hydraulic systems.

I. Overview of Taiwan DTL Gate Valves

1.1 Definition of Plug Valve

A plug valve is a modular hydraulic component that achieves hydraulic control functions by embedding a hydraulic valve plate. It can achieve pressure regulation, direction control and flow distribution in hydraulic systems, and is widely used in various hydraulic systems.

1.2 Characteristics of DTL Gate Valves

Modular design: Hydraulic valve plates can be inserted, saving space and enhancing system integration

Compact structure: Small size and flexible installation

Sensitive action: The valve core is precisely processed, with a fast response

Strong pressure resistance: Adaptable to high-pressure hydraulic systems

Easy to maintain: The detachable valve core and seals reduce the difficulty of maintenance

Ii. Common Problems and Cause Analysis of DTL Gate Valves in Taiwan

2.1 Oil leakage from the valve Body

Phenomenon: Hydraulic oil leakage occurs at the connection of the valve body or the sealing of the valve core.

Cause analysis

The sealing parts are aged or worn

The valve body is not installed flat or the threaded fastening is improper

Hydraulic oil contamination, with impurities getting stuck in the sealing ring

The system pressure exceeds the design pressure of the valve block

Solution

Regularly inspect the seals and replace them

When installing, make sure the valve body is flat and securely fastened

Keep the hydraulic oil clean and replace the filter regularly

Confirm that the working pressure of the hydraulic system is within the design range

2.2 The valve core operates sluggishly

Phenomenon: The valve core does not respond in a timely manner, and the hydraulic actuator operates with delay or instability.

Cause analysis

The oil resistance between the valve core and the valve body is too large

There are impurities on the surface of the valve core or in the oil passage

The viscosity of the hydraulic oil is either too high or too low

The spring preload is set improperly

Solution

Clean the valve core and oil passage to keep them unobstructed

Adjust the viscosity of the hydraulic oil to meet the requirements of the valve block

Adjust or replace the spring to ensure the correct preload

2.3 Unstable system pressure

Phenomenon: The pressure in the hydraulic system fluctuates greatly, and the actuating elements operate unsmoothly.

Cause analysis

The pressure relief function of the DTL plug valve has failed

The valve core is worn or the spring is fatigued

Insufficient hydraulic oil or excessively high oil temperature

The pipeline design of the hydraulic system is unreasonable

Solution

Check and replace the pressure relief valve or the plug valve module

Regularly maintain the valve core and spring

Keep the hydraulic oil level sufficient and control the oil temperature

Optimize the pipeline design to reduce pressure fluctuations

2.4 The valve block makes a lot of noise

Phenomenon: When the hydraulic system is in operation, the DTL plug valve emits a distinct noise.

Cause analysis

The fit clearance between the valve core and the valve body is not appropriate

The hydraulic oil contains gas or foam

There are impurities or particles in the oil circuit

The valve body is not firmly fixed, causing vibration

Solution

Adjust the valve core clearance or replace the precision valve core

Carry out degassing treatment of the hydraulic oil

Clean the oil circuit to ensure the oil is clean

Check the valve body for fixation to reduce vibration

2.5 The temperature of the valve block is too high

Phenomenon: The DTL plug valve generates severe heat during operation, with the temperature exceeding the normal range.

Cause analysis

The system pressure is too high, and the valve block keeps releasing pressure

The viscosity of the hydraulic oil is inappropriate, resulting in high flow resistance

The friction between the valve core and the valve body increases

Insufficient lubrication or aged oil

Solution

Adjust the system pressure to avoid long-term overpressure

Select hydraulic oil that meets the requirements

Regularly maintain the valve core and valve body to reduce friction

Replace the aged hydraulic oil to ensure lubrication performance

2.6 The valve block has a short service life

Phenomenon: The service life of the DTL gate valve is lower than expected, and it frequently malfunctions.

Cause analysis

The hydraulic oil is contaminated and impurities enter the valve core

The system's working pressure or load exceeds the standard

The material of the valve block or the sealing part does not meet the requirements

Improper installation or operation

Solution

Ensure the hydraulic oil is clean and replace the filter regularly

Ensure that the system pressure and load are within the design range

Select high-quality materials and seals

Strictly follow the manufacturer's installation and operation specifications

Iii. Maintenance and Care of Taiwan DTL Gate Valves

Regularly inspect the valve body: observe for any oil leakage, looseness or corrosion

Valve core cleaning: Regularly disassemble the valve core to clean the oil passage and keep it unobstructed

Seal replacement: Replace aged or worn sealing rings in a timely manner

Hydraulic oil management: Use clean oil to prevent impurities from entering

Spring and pre-pressure adjustment: Ensure the valve core operates sensitively

System monitoring: Regularly measure pressure fluctuations and valve block temperature

Regular maintenance can significantly extend the service life of DTL gate valves and enhance the stability and safety of the hydraulic system.

Iv. Professional Advantages of Kunshan Lianlai Hydraulic Machinery Co., LTD

Rich industry experience: Years of experience in hydraulic system design and valve block application

Professional product supply: We offer customized services for Taiwan DTL gate valves and various types of hydraulic valves

Precision machining technology: CNC machining ensures the precise fit between the valve core and the valve body

Improve after-sales service: Provide installation guidance, commissioning plans and technical support

Quality Assurance: A strict quality management system is implemented to ensure the long-term stable operation of the valve block

Taiwan DTL gate valves are widely used in hydraulic systems due to their modularization, compact structure and high-precision control. However, problems such as oil leakage, sluggish operation, unstable pressure, high noise, high temperature and short service life are still relatively common. These problems can be effectively solved by cleaning the oil circuit, regular maintenance, replacing seals and reasonable system design. Choosing a professional manufacturer, such as Kunshan Lianlai Hydraulic Machinery Co., LTD., not only ensures product quality but also provides customized solutions and long-term technical support, offering reliable guarantees for the stable and safe operation of the hydraulic system.