Electric stop valve

I. Introduction:

The J941H electric stop valve is suitable for pipelines in various working conditions such as petroleum, chemical industry, pharmaceutical, fertilizer, and power industries, to cut off or connect the pipeline medium. Applicable media include water, oil products, steam, acidic media, etc. Operation methods include manual, gear transmission, electric, pneumatic, etc. The opening and closing part of the electric stop valve is a plug-shaped valve disc, the sealing surface is flat or conical, and the valve disc moves linearly along the center line of the fluid. The movement form of the valve stem includes the rising stem type (the valve stem rises and falls, the handwheel does not rise and fall) and the rising and rotating stem type (the handwheel rotates and rises and falls together with the valve stem, and the nut is arranged on the valve body). The electric stop valve is only suitable for fully open and fully closed positions, and is not allowed for regulation and throttling.

II. Main Uses:

Compact structure, reasonable design, good valve rigidity, smooth channel, small flow resistance coefficient. The sealing surface is made of stainless steel and hard alloy, with long service life. Adopting flexible graphite packing, it has reliable sealing and is light and flexible to operate. The driving methods are manual, electric, pneumatic, and gear transmission. The structural types include elastic wedge single gate plate, rigid wedge single gate plate, and double gate plate. It is widely used in petroleum and chemical industry, thermal power plants, etc., as an opening and closing device for connecting or cutting off media in oil and steam pipelines. The electric control valve is installed on water and steam pipelines, used as an opening and closing device. It must be in a fully open or fully closed position and cannot be used as a regulating valve. The valve switch is driven by an electric device.

III. Structural Features:

1. Exquisite material selection, in line with relevant domestic and international standards, reasonable structure, and beautiful appearance.
2. The sealing surfaces of the valve disc and valve seat are surfaced with iron-based alloy or Stellite cobalt-based hard alloy, with good wear resistance, high temperature resistance, corrosion resistance, and scratch resistance, and long service life.
3. The valve stem is subjected to tempering and surface nitriding treatment, with good corrosion resistance and scratch resistance.
4. Various piping flange standards and flange sealing surface types can be adopted to meet various engineering and user requirements.
5. The valve body has a complete range of materials, and the packing and gaskets can be reasonably selected according to actual working conditions or user requirements, suitable for various pressure, temperature, and medium working conditions.
6. The reverse sealing is made by threaded connection of sealing seat or surfacing of austenitic stainless steel on the body, with reliable sealing. The packing can be replaced without shutting down the equipment, which is convenient and fast and does not affect the system operation.
7. Equipped with DZW series multi-turn electric devices, which have small housing, light weight, complete functions, and can be used with remote computers. Electric devices can also be selected according to user requirements.

IV. Performance Specifications: