Product categories: straight-through cut-off valve 
 Product Name: stainless steel flange cut-off valve 
 Product Type: J41W-16P-DN100 

 Cut-off valve, stainless steel flanges Overview: 

 Stainless steel flange globe valve opening and closing parts of the plug-shaped valve, sealing appear before the plane or cone, the valve in a straight line along the center line of the fluid. Stem form of exercise, lift rod (stem down, hand wheel lift), lift the rotating rod (the hand wheel and stem with rotating movements, nuts located in the body). The stainless steel globe valve only applies to the fully open and fully closed, is not allowed to make adjustments and to reduce expenditure. 

 Stainless steel flange cut-off valve is a valve R & D and production of strong German forces sealed valve, the valve is closed the valve to exert pressure to force the sealing surface does not leak. When media from the bottom of the valve into the valve, the operating force required to overcome the resistance, the friction force of the stem and the packing and thrust generated by the pressure of the medium, and close the valve force than the force to open the valve, Therefore, the diameter of the valve stem, otherwise they will be the failure of the stem top bend. In recent years, the emergence of self-sealing valve, stainless steel globe valve the flow of media reform from the top of the valve into the valve chamber, then in the medium pressure, the force is small and close the valve, while a large force to open the valve diameter of the valve stem can be reduced accordingly. The same time, the role of media, this form of valve more closely. The valve of "three to the provisions of the stainless steel globe valve flow, all top-down. Stainless steel cut-off valve open, the valve opening height for the nominal diameter of 25% to 30% when the flow has reached the maximum, indicating that the valve has reached the fully open position. Stainless steel globe valve fully open position, the stroke of the valve should be to decide. 

 Stainless steel flange globe valve has the following advantages: 

 A simple structure, manufacturing and maintenance more convenient. 
 (2) the working stroke is small, open and close a short time. 
 Good sealing, small friction force between the sealing surface, longer life expectancy. 

 Shortcomings of the cut-off valve, stainless steel flanges are as follows: 

 A fluid resistance, the larger force required to open and close. (2) does not apply to particles with a high viscosity, easy to coking media. Adjust the performance is poor. 

 Stainless steel flange structure in the form of cut-off valve: 

 (1) Stainless steel flange globe valve types, according to the position of the stem threads and external threads, internal thread type. The flow of the medium, straight-through, DC type and angle type. Stainless steel globe valve according to the sealed form of points, packing seal, stainless steel cut-off valves and bellows sealed stainless steel globe valve. 
 Straight-through, DC and rectangular Type 2. Stainless steel flange closing the valve structure. Straight-through processing is the most common structure, but its resistance to fluid. DC fluid resistance is small, used for containing solid particles or fluid viscosity. The use of forged right angle body, applies to a small pass through the high pressure stainless steel globe valve. 

 Stainless steel flange cut-off valve installation and maintenance should note the following: 

 A hand wheel, lever operated stainless steel globe valve can be installed in any position on the pipeline. 
 Handwheel, handle and Wei mechanism, does not allow for lifting with. 
 3, the flow of media should be consistent with the body shown in the arrow direction.