Z41F46-16C Manual Cast Steel Fully Lined Tetrafluoro Flanged Gate Valve Rising Stem Corrosion And Acid And Alkali Resistant

Purpose and Functions:

• Fluorine lined gate valve is a type of valve. The opening and closing part of the fluorine-lined gate valve is the gate plate. The movement direction of the gate plate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used gate valve form a wedge shape, and the wedge angle varies with the valve parameters. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce slight deformation to improve its craftsmanship and compensate for the deviation of the sealing surface angle during the processing. This kind of gate The plate is called an elastic gate.

Structural Features：

• The valve adopts pressure self-tightening seal or valve body and valve cover gasket sealing structure, which is trustworthy! Safe and reliable to use.

• The valve disc adopts a double gate plate with a universal top structure in the middle, which can automatically adjust the consistency of the sealing surface of the valve disc and the valve seat to ensure the sealing of the valve. At the same time, this structure is easy to maintain, saves costs, and has good valve disc interchangeability.

• The sealing surfaces of the valve disc and valve seat are made of cobalt-chromium-tungsten carbide by plasma spray welding. The sealing surface has high hardness, is resistant to friction and scratches, and has a long service life.

• The valve stem is made of nitrided steel, with surface nitriding treatment, high hardness, scratch resistance, corrosion resistance and long service life.

• The electric device is equipped with a torque control mechanism, an on-site operating mechanism and a manual and electric switching mechanism. In addition to local operation, it can also perform remote operation, PLC control, 4~20mA current input and output intelligent control, etc.

• The manual valve is opened by a manual mechanism or a handwheel upon impact. Reduce valve operating force.

• The valve can be installed at any position in the pipeline, and carbon steel or alloy steel valves can be selected according to the medium and the temperature of the medium.

• During initial installation and debugging, the valve must be manually opened to about half of the position to avoid damage to the valve or electrical equipment caused by reverse connection of the motor phase sequence.

Working Principle

• Turn the handwheel and advance or retreat the thread between the handwheel and the valve stem to lift or lower the valve plate connected to the valve stem to open and close.

• The types of gate width can be divided into wedge gate gate valves and parallel gate gate valves according to the sealing surface configuration. Wedge gate gate valves can be further divided into: single gate type, double gate type and elastic gate type; parallel gate gate valve It can be divided into single gate type and double gate type. According to the thread position of the valve stem, it can be divided into two types: rising stem gate valve and concealed stem gate valve.

• The following matters should be paid attention to when installing and maintaining fluorine-lined gate valves:

• The handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.

• Double-gate gate valves should be installed vertically (i.e., the valve stem is in a vertical position and the handwheel is at the top).

• The gate valve with a bypass valve should open the bypass valve before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).

• Gate valves with transmission mechanisms should be installed according to the product instruction manual.

• If the valve is frequently used on and off, lubricate it at least once a month.

  
  

 Design and Manufacturing Standards

• Design and manufacturing according to GB/T 12234-89

• The structural length is in accordance with GB/T 12221-89

• Flange connection dimensions: JB/T 79-94

• Valve inspection and testing are in accordance with GB/T 13927-92

Specification 

Body Type

Standards and Norms

Standards and Norms

Performance Parameter

Materials of Main parts

 

About Delivery

About Application