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Hydraulic solenoid valve does not seal tightly mainly has the following several aspects:

1.Elastic sealing material. The elastic sealing material according to the different media for supporting the design, this is not a problem, such as PTFE, EPDM, FKM, but the price gap is large, of course, here refers to the purity of the monomer which material proportion of more than 95%, most of them are refurbished material, the purity is not enough, and there is no guarantee that the chemical and physical properties will change, which is easy to lead to long-term dissolution of the medium with the media leakage. 2.Flexible sealing processing accuracy. The machining accuracy for miniature solenoid valve control precision and the elastic component of it, but if it is large diameter solenoid valve elastic shape of the component is not small, water, etc. will shrink, gate product flatness, roughness directly affects the current, abroad are integral forming, laser cutting, so that forming. Of course, this set of processing equipment investment is huge, the general factory can not do this. Since it is not smooth, it is easy to leak.

3.Machining precision of metal sealing contact surface and structural design. Of course, we can not say which design is best, can only be used in conjunction with the use of their elastic components, but the accuracy must be required, how much is the roughness, and what kind of material processing on such small contact end face? If the design of the end face is too large, will impact the flow rate, and it is easy to stuck crystal, dust and other fine particles on the elastic components, so it is easy to cause leakage, and will be more after a long time. But the cone seal design will not be such a problem, the contact surface is small, the flow rate is quick, but the flow will be very big in this kind of structure.

4.Plunger assembly welding. The general shape of the plunger assembly is small, the requirements of argon arc welding and laser welding are relatively high, one is to ensure the production capacity, but also to ensure the quality, this material is also relatively high demand, corrosion and oxidation medium will lead to weld point corrosion, has great influence on the air tightness.

BSTIND 4WE10 Rexroth Hydraulic Valves

Standard flow of 4WE10 bosch rexroth hydraulic Valves is 120l/m,and working pressure of hydraulic direction valve is 32Mpa,the same as NG5 valve and Cetop5 valve. 4WE10 rexroth type directional valve usually used on hydraulic power,hydraulic work system and industrial hydraulic equipment.

4/3, 4/2 directional valve with wet-pin DC or AC voltage solenoids Size 4WE10 has Hydraulic Solenoid Valve Component series has 3X (30~39),4X (40~49) The maximum operating pressure is 315 bar The maximum flow is 120 l/min

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Low temperature solenoid directional valve is widely used in natural gas, liquefied gas pipeline, and its role as same to other varieties of solenoid operated hydraulic control valve are as for the normal transport of the gas medium in the pipeline, necessary to cut off and the role of regulation on the flow. The low temperature solenoid operated hydraulic control valve is used in a number of highly flammable gas pipeline, so in the connection of the pipeline, need to ensure that the gas will not leak. The main reason of low temperature solenoid valve leakage is:

There are two reasons for the leakage of low temperature solenoid operated hydraulic control valve, firstly the main reasons is the seal deformation in the low temperature state. When the temperature of the medium is decreased, the volume change is caused by the phase change of the material, and the sealing surface with high grinding precision is produced to cause warpage, leading to the bad sealing. Two is the external leakage. It is mainly due to the flange connection between low temperature solenoid valve and pipe, due to the connection pad, connecting bolts, and the connection between the material at low temperature shrinkage caused by the relaxation of the gap and lead to leakage. Therefore, the connection mode between the valve body and the pipeline can be changed to the welding structure, then the low temperature leakage can be avoided. Another is the stem and packing leakage. These are the main reasons for the leakage of low temperature solenoid operated hydraulic control valve.

BSTIND 4WE6 Directional Valves

Working pressure of rexroth 4WE6 Directional Valves is 32Mpa,the same as NG3 valve and Cetop3 valve. 4WE6 directional valve are usually used for changing the oil flow direction of hydraulic power,hydraulic working system and industrial hydraulic system. 4/3, 4/2 4we rexroth Type WE directional valves take use of wet-pin DC or AC voltage solenoids. Size 6 Hydraulic Solenoid Valve Component series is 6X (60~69) The maximum operating pressure is 350 bar The maximum flow is 80 l/min-DC Voltage Solenoids. 60 l/min using AC Voltage solenoids.

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1.Tile pressure machine must use high pulse input function, high input of excellent performance, strong anti-interference ability of AB phase. And the use of fixed value interrupt function to ensure accuracy. 2.The detection part of the tile press machine: pulse encoder for detecting color steel tile length, the up and down switch of tile pressing, the up and down switch of cutter, the up and down operation button of tile pressing, the up and down button of cutter, emergency stop switch, hydraulic on-off switch etc.. 3.The machine is equipped with a frequency converter drive motor, a hydraulic station motor, two solenoid directional valves for tile pressing, and two hydraulic solenoid valves for cutter. 4.PLC with 14 input /10 relay output, just to meet the input and output requirements. With KDN text screen, you can complete the parameter settings, alarm display, production data display, etc..

DSG-01 / DSG-02 yuken solenoid valve

1/8 solenoid operated directional Yuken DSG-01 hydraulic valves, the power is 6 W,about 1/5 of Yuken DSG-01 series (29 W),and can reduce a lot of running costs.Maximum operating pressure is 32 MPa and maximum flow is 63 L/min, identical to Yuken DSG-01 series yuken type hydraulic valves,the valves can provide high pressure and high flow with low pressure drop,features can be materialized by taking use of powerful wet solenoid and rational flow channel.

Max.Operating Pressure: approx.10% increased 31.5^35 MPa. Max. T-Line Back Pressure: approx. 30% increased 16^21 MPa. Max.Flow Rate:approx.60% increased 63.4~100L/min. Low Pressure Drop: Pressure drop of these valves can be reduced by 10 % from 1.0 to 0.9 MPa (145 to 131 PSI), by comparing to existing lines*; the valves can effectively reduce energy consumption .

{* At Flow Rate: 60 L/min (15.9 U.S.GPM), Spool Type: 3C2)

With characteristics compact and light weight, even with high pressure, high flow and low pressure drop, these valve bodies with DC double solenoids are compact and weight is light; overall length and weight can be reduced from 210 to 205 mm (8.26 to 8.07 inch) and from 2.2 to 1.94 kg,respectively.

In addition to the standard valves,shockless type are available in high pressure and high flow, and can eliminating noise and vibration in piping when spool changeover is available.

Due to the powerful magnetic and spring force of the solenoids,shockless type can operate stable,and these valves are antipollution,especially in stable operation.

IP65-is equivalent to high dust-proof and water-proof. With characteristics of dust-proof and water-proof. Products can be used on various situation and had passed CE standard. In addition highly reputable solenoid operated directional yuken standard hydraulic valve series,we had put production of “energy-saving solenoid operated directional Yuken valve DSG-01” with high pressure and flow,which can reduce holding power.

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Hydraulic transmission is to use liquid as working medium to transmit energy and control the transmission mode. The hydraulic transmission technology has the advantages of large power to weight ratio, small volume, high frequency response, high pressure and good flow control, flexible transmission of power, easy to achieve linear motion, stepless speed regulation, etc..

The complete hydraulic system is composed of five parts: power unit, actuator, control and adjustment device, auxiliary equipment and working medium. Hydraulic components are composed of hydraulic pumps, hydraulic cylinders, hydraulic motors, hydraulic directional valves, supercharger and other hydraulic system components.

In the hydraulic system, hydraulic pumps and motors, hydraulic system valves and cylinders are the most valuable parts, accounting for 72% of the total value of the hydraulic system.

Because of the advantages of hydraulic transmission technology, it is widely used in downstream. All application areas such as engineering machinery, agricultural machinery, machine tools, machinery, metallurgy, mining machinery, forging port equipment, airport equipment, ships, oil and gas production, industrial robots, automated production line etc..

BSTIND 4WE10 rexroth hydraulic solenoid valve

Standard flow of 4WE10 bosch rexroth hydraulic Valves is 120l/m,and working pressure of hydraulic direction valve is 32Mpa,the same as NG5 valve and Cetop5 valve.4we10 rexroth type directional valve usually used on hydraulic power,hydraulic work system and industrial hydraulic equipment.

4/3, 4/2 directional valve with wet-pin DC or AC voltage solenoids Size 4WE10 has Hydraulic Solenoid Valve Component series has 3X (30~39),4X (40~49) The maximum operating pressure is 315 bar The maximum flow is 120 l/min

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It is a term of hydraulic machinery industry, electromechanical industry .Hydraulic power can be used as a hydraulic transmission. Hydraulic pressure can also be used as a control method, called hydraulic control.

Hydraulic transmission use liquid as the working medium, use liquid pressure energy to transfer power.

Hydraulic control is the control signal transmission mode using pressure liquid. Hydraulic control usually includes hydraulic open loop control and hydraulic closed loop control. Hydraulic closed-loop control is also called hydraulic servo control, usually including the electric hydraulic servo system and mechanical hydraulic servo system etc..

A complete hydraulic system consists of five parts, namely an energy device, an executive device, a control adjustment device (hydraulic valve), an auxiliary device and liquid medium. The hydraulic pressure is widely used in industry and civil industry because of its large transmission power, easy to transfer and configuration. The executive component of hydraulic system (hydraulic cylinder and hydraulic motor) is to convert the pressure energy into mechanical energy. The energy source of hydraulic system (hydraulic pump) is to convert the mechanical energy of the prime mover to the pressure energy of the liquid.

In the hydraulic system, the air in the oil will be separated and a large number of bubbles will be formed if the pressure is lower than the air pressure at the working temperature of the oil; when the pressure is further reduced to the saturated vapor pressure at the working temperature of the oil, the oil will rapidly vaporize and produce a large number of bubbles. These bubbles are mixed in the oil, resulting in cavitation, so that the oil filled in pipes or hydraulic components turn into a discontinuous state, this phenomenon is generally known as the cavitation phenomenon.

Cavitation occurs at the inlet and outlet of the hydraulic pump. When the oil flows through the narrow channel of the manual hydraulic valve port, the liquid flow rate increases, the pressure drops sharply, and the cavitation phenomenon appears. Hydraulic pump installation height is too high, oil suction pipe diameter is too small, oil absorption resistance is too large, or hydraulic pump speed is too high, inadequate oil absorption, etc., are likely to cause cavitation.

Cavitation occurs in hydraulic system, the bubble with the oil flow to the high pressure area, under high pressure air bubbles will quickly break down, the liquid around to fill this hole at high speed, the liquid in the high-speed collision and form local hydraulic impact, the local temperature and pressure increased sharply, caused a strong vibration and noise.

Pipe wall and element surface near bubble condensation, due to the long-term impact of hydraulic shock and high temperature, as well as the strong corrosion of the gas in the oil, so that the metal element and particles of the wall surface are spalling, the corrosion on the surface of the cavitation phenomenon called gas etching.