Komatsu 423-43-37650 safety valve

Product representation

Detailed product information

The safety valve of the Komatsu loader is a key component that provides safe and stable operation of the hydraulic system, usually consisting of a valve body, valve core, spring and other components. Когда давление в системе превышает заданное значение, давление толкает сердечник клапана, преодолевая усилие пружины, в результате чего клапан открывается, а жидкость в системе выпускается через корпус клапана, обеспечивая сброс давления; When the pressure drops below the given value, the elastic force of the spring pushes the valve core for discharge, closing the valve and stopping the discharge of pressure. It has the possibilities of accurate pressure adjustment and can set pressure in a certain range in accordance with various working requirements, ensuring stable operation of the system. At the same time, the safety valve is made of high -strength, high -quality materials resistant to corrosion, can adapt to harsh operating conditions and has a long service life.

Stages of installation

Preliminary preparation: check the technical characteristics and models of the safety valve to make sure that it corresponds to the hydraulic system of the loader; Use cleaning tools for thoroughly cleaning the valve and pipeline system from pollution and oil spots so that they do not affect the normal operation of the valve.

Install the valve: Use special tools to fix the safety valve in the specified place of the system. During the installation, make sure that the valve is in a horizontal position, and the angle of inclination is at least 20 ° to facilitate the discharge of the medium; Set the sealing gaskets to connect the valve to the pipeline, and then tightly connect it with bolts or threads to prevent leakage.

Test and debugging: After installation, perform a test under pressure on the valve to check it for the presence of a leak. If there is a leak, adjust the seal in time; Open the bypass valve to release air out of the duct, then close the bypass valve, start the loader hydraulic system and check if the safety valve can open normally and throw off the pressure.

Common errors

A leak through the valve: dirt and impurities are sticking to the sealing surface, or the material of the sealing surface is poor -quality, or the quality of service does not comply with the standards, which leads to a leak exceeding the permissible range on the sealing surface of the valve disk and the valve saddle at normal working pressure.

The valve disk cannot be returned to its original position: the spring is curved and deformed, the valve disk is incorrectly installed or an extraneous object is stuck in the valve disk, which is why the valve disk cannot return to the original closed position after the pressure is discharged.

The valve opens until a given pressure reaches: this may be due to the inaccurate pressure setting or the aging of the spring, which leads to a premature valve opening before the pressure in the system reaches a given value.

The valve does not open when the given pressure reaches: the causes are improperly given pressure, sticking the valve plane to the valve saddle, the sequel of the lever safety valve lever or the displacement of the position of the cargo.

After -sales service

Warranty service: Komatsu provides a specific warranty period. During the warranty period, if the safety valve fails due to quality problems, you can use free repair or replacement.

Technical support: Users can receive recommendations from professional technical specialists on hot lines of customer service, online platforms and other channels to solve problems that arose during installation, operation and maintenance.

The service network: Komatsu has created an extensive network of after -sales service around the world with many authorized repair stations. Professional service personnel can quickly respond and provide repair services “from door to door” or delivery.

Supplies of accessories: a comprehensive system of supplies of accessories has been created, providing timely supply of accessories for safety valves, reducing the downtime of equipment and ensuring uninterrupted maintenance.

Common malfunctions and methods for their elimination for the safety valve of the loader Komatsu:

The safety valve of the Komatsu loader plays a key role in ensuring safe and stable operation of the hydraulic system. However, during operation, various malfunctions can occur that affect the normal operation of the loader. Below are the common malfunctions of the safety valve of the Komatsu loader and the corresponding solutions.

1.

The phenomenon of the malfunction

With a normal working pressure, a leak, which goes beyond the permissible range, occurs on the sealing surface between the plate of the valve and the valve saddle.

Analysis of the causes

Dirt and pollution stick to the sealing surface, violating its tightness.

The material of the sealing surface is poor -quality and wear out strongly after prolonged use.

The quality of the audit did not meet the standards, and the sealing surface was not correctly installed during installation.

Bypass

Understand the safety valve and with the help of a cleaning tool, carefully clean the sealing surface from pollution so that it is clean and even.

Check the wear of the sealing surface. If the wear is strong, replace the node of the sealing surface corresponding to the specifications of the Komatsu loader, and select strong -quality sealing materials.

Install the sealing surface in place, making sure that the installation process is carried out strictly in accordance with the operational specifications in order to ensure a tight fit of the sealing surface. For calibration and testing, you can use professional tools.

2. The valve disk cannot be dropped

The phenomenon of the malfunction

The disk cannot return to the initial closed position after the pressure reset.

Analysis of the causes

The spring bends and deforms, losing its normal elastic restorative power.

The valve disk is set incorrectly, which makes it difficult to move.

An extraneous object stuck in the valve disk, interfering with its normal movement.

Bypass

Check the condition of the spring. If the spring is bent or deformed, replace it with a new one on time to make sure that the elasticity and characteristics of the spring comply with the requirements of the safety valve.

Check the position and method of installing the valve disk again and adjust it in accordance with the correct stages of the installation to guarantee that the valve disk can freely and smoothly move in the valve body.

Disassemble the safety valve, clean the valve body from foreign objects and check the gap between the valve disk and the valve saddle to make sure that there are no foreign objects.

3. The valve opens if the given pressure is not reached.

The phenomenon of the malfunction

The valve opens in advance when the pressure in the system does not reach a given value.

Analysis of the causes

The set pressure is inaccurate, and the initial value of the set pressure is incorrect.

The spring is aging, its elasticity weakens, and it cannot withstand specified pressure.

Bypass

Use professional pressure calibration equipment to repeat the pressure of the safety valve and precisely set the pressure value in accordance with the working requirements of the Komatsu loader and the parameters of the hydraulic system.

Replace the old spring and select a reliable quality spring corresponding to the technical characteristics to guarantee that the spring force will comply with the requirements for the normal operation of the valve.

4. The valve does not open when the given pressure is reached.

The phenomenon of the malfunction

When the pressure in the system reaches a given value, the valve does not open to discharge pressure.

Analysis of the causes

The set pressure was set incorrectly, and the actual set pressure is above the normal working pressure of the system.

The valve plate sticks to the valve saddle, which prevents the normal opening of the valve plate.

The lever valve lever is stuck and cannot normally transfer the pressure.

The position of the cargo changes, affecting the pressure of the opening of the safety valve.

Bypass

Check the pressure setting and use professional tools for re -calibration of the pressure setting value to make sure that it meets the working requirements of the hydraulic system.

Disassemble the safety valve and clean the adhesion between the valve plate and the valve saddle. For processing, you can use the appropriate lubricants, but be careful and choose lubricants that will not affect the normal operation of the hydraulic system.

Check the lever -type safety valve lever, delete all extraneous objects stuck in the lever, and make sure that the lever can rotate freely and transmit pressure normally.

For a safety valve of the cargo type, check the position of the cargo and adjust it in accordance with the standard requirements so that it can accurately control the valve opening pressure.

Analyzing and understanding the common malfunctions of the safety valves of Komatsu loaders and methods for their elimination, operators and maintenance personnel can quickly take effective measures in case of problems to ensure the normal operation of the safety valve and the safe and stable operation of the hydraulic loader system. With daily use, the regular inspection and maintenance of the safety valve should also be strengthened in order to timely identify potential problems and prevent the occurrence of malfunctions.

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The plant operates a team of highly qualified and experienced engineers who continuously introduce technological innovations and improve products. Currently, the company has a number of independent intellectual property rights and patented technologies. The manufactured construction equipment includes a wide range of equipment such as excavators, loaders, taps, bulldozers and other machines. Products are highly productivity, reliability, energy efficiency and environmental friendliness, as well as the ability to adapt to difficult operating conditions in various climatic and working media around the world.

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