Normally closed electric globe valve

J941HNormally closed electric globe valveProduct Description

This utility model relates to a shut-off valve, particularly aNormally closed electric globe valveIt has good strength, rigidity, and flow capacity, consisting of an electric actuator and a flange stop valve, and receives AC380V power pressure or voltage signals to complete the opening and closing actions of rising or falling. Electric flange globe valves have good strength, stiffness, and flow capacity, and can be used in various pressure, temperature, and medium conditions. They are widely used in pipelines with nominal pressures ranging from PN1.6 to 16MPa and working temperatures ranging from -29 to 550 ℃ in environmental protection, petroleum, chemical, and power industries. They play a role in cutting off fluids and are suitable for fully open and fully closed forms. It is generally not recommended to adjust or throttle because the unbalanced force during adjustment is too large, which can cause severe erosion of the valve core.

Characteristics of electric flange globe valve:

1. Compact structure, reasonable design, good valve rigidity, smooth channel, and low flow resistance coefficient.

The J941H electric flange globe valve has a relatively short opening or closing stroke for the valve stem and has a very reliable cutting action.

3. A sealing seat is designed on the valve cover, which makes the packing seal more reliable and convenient for packing replacement when fully open.

J941H electric globe valve is divided into flat seal and conical seal according to different sealing forms. The sealing surface is made of stainless steel and hard alloy, with a long service life.

5. Fillers and gaskets can be reasonably selected according to actual working conditions or user requirements, and can be applied to various pressure, temperature, and medium working conditions, with reliable sealing and excellent performance.

Background technology:

In order to achieve automatic control of indoor temperature, an electric shut-off valve is often installed at the central air conditioning fan coil unit or HVAC radiator. Depending on the method of temperature control, electric shut-off valves are divided into normally open shut-off valves and normally closed shut-off valves. Currently used in the marketNormally closed electric globe valveWhenever the pressure reaches 1 At 5 times the working pressure, serious leakage may occur at the sealing point between the valve core and valve stem, or it can be guaranteed that there will be no leakage at 1.5 times the working pressure, but the process is complex, the processing difficulty is high, and the cost is high. If leakage occurs, it may also cause serious safety problems

Technical parameters of electric flange globe valve:

Working principle of electric flange globe valve:

The opening and closing component of the electric flange globe valve is a plug shaped valve disc, with a flat or conical sealing surface. By relying on electric thrust to rotate the valve stem, the valve disc moves linearly along the centerline of the fluid, making the sealing surface of the valve disc tightly fit the sealing surface of the valve seat and preventing the flow of the medium. The movement form of the valve stem includes a lifting rod type (the valve stem is lifted and lowered without the handwheel lifting), as well as a lifting rotating rod type (the handwheel rotates and lifts together with the valve stem, and the nut is set on the valve body). The electric flange globe valve only allows one-way flow of the medium and has directionality during installation. The structural length of the globe valve is greater than that of the gate valve, and the fluid resistance is high. During long-term operation, the sealing reliability is not strong.

Material of parts for electric flange globe valve:

J941HNormally closed electric globe valveTest pressure

Test pressure

scope of application

Scope of use

Main component materials:

Material for main parts：

Main dimensions and weight:

Main dimensions and weight：

Main dimensions and weight:

Main dimensions and weight：

Main dimensions and weight:

Main dimensions and weight：

To ensure the normal operation of the electric globe valve, please check whether the configuration of the electric globe valve meets the design requirements before installing a new valve. So what should be paid attention to when installing an electric shut-off valve? Next, let the editor of the electric shut-off valve explain this, hoping to be helpful to everyone. The specific content is as follows:

1. Electric globe valve is a field instrument. The ambient temperature should be -25-60 ° C, and the relative humidity should be below 95%. When installed outdoors or in high-temperature environments, please take waterproof and cooling measures. Stay away from the vibration source or strengthen the anti vibration measures at the location of the vibration source.

2. In general, pipelines equipped with electric shut-off valves should not be too high from the ground or above. If the height of the pipeline exceeds 2 meters, a platform should be provided for the operation and maintenance of the handwheel.

3. Electric globe valves usually require vertical installation, but in special cases, they can be installed at an angle. For example, if the inclination angle is large or the valve itself is too heavy, a bracket should be used to protect the valve.

4. Before installing the electric shut-off valve, the pipeline should be cleaned thoroughly to remove dirt and welding slag. After installation, to ensure that there are no impurities inside the valve body, the valve should be cleaned again by opening all valves when introducing the medium to prevent impurities from getting stuck. After using the handwheel mechanism, it should return to its original neutral position.

5. In order to continue the production process in case of malfunction or maintenance of the electric shut-off valve, a bypass pipeline should be installed on the electric shut-off valve. At the same time, special attention should be paid to whether the position of the electric shut-off valve meets the process requirements.

6. The electrical components of electric globe valves must be installed according to the structural requirements of their respective electrical equipment. Explosion proof products must be installed in accordance with the requirements of the electrical equipment installation regulations for explosion-proof places. If the power cord adopts SBH type or other six core or eight core rubber sheathed installation cables, the outer diameter is about Φ 11.3mm. During use and maintenance, it is strictly prohibited to open the maintenance cover or pry open the explosion-proof surface in explosive areas. At the same time, during the disassembly and assembly process, do not knock or scratch the explosion-proof surface. After the repair is completed, restore it to its original explosion-proof state.

7. After disassembling and repairing the electric shut-off valve reducer, please pay attention to oil lubrication. Generally, do not disassemble, clean, or add oil to low-speed motors. After assembly, check if the valve position matches the position open indicator.

Ordering Notice:

1、 ① Product name and model ② Caliber ③ Is there any accessory for us to correctly select for you ④ Operating pressure ⑤ Temperature of the medium used.

2、 If the company's model has already been selected by the design unit, please order directly from our sales department according to the model.

3、 When the usage situation is very important or the environment is complex, please provide design drawings and detailed parameters as much as possible, and our valve company experts will review and control them for you. If you have any questions: Please: We will do our best to provide you with high-quality service. We provide comprehensive and professional "valve system solutions" and are also willing to help users solve problems encountered in production.