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Product Name: Forged Steel Wafer Ball Valve,150LB,F316L Connect form: flange. Size: 1/2″ – 4″. Suitable medium: water, oil, steam, Suitable temperature: -40 – +150°C. Working pressure: 1.6 -2.4 – 6.4. Main material: A105.F304 ,F316,F316L. Design and manufacture adoption: ISO, API, GB, BS, we are strict with the security and quality ,it was accepted by clients and sells to internal, external market.
STV Valve Technology Group Co., Ltd is a professional leader China wafer ball valve,wafer ball valve stainless steel,wafer type ball valve,wafer ball valve manufacturers,lug wafer ball valve,wafer ball valve dimensions,wafer ball valve face to face,wafer ball valve italy,wafer ball valve pn16,wafer flanged ball valve,wafer floating ball valve,wafer pattern ball valve,wafer type ball valve drawing,wafer type ball valve manufacturers manufacturer with high quality and competitive price.
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In the market, the valve products are more. Generally, there are many ball valves and gate valves. For those who want to buy two products, they will know what kind of use and function and the difference between the two before buying. How to choose good quality ball valve and gate valve. For this reason, I have summarized some knowledge about ball valves and gate valves. Just tell you the difference between a ball valve and a gate valve? What should you pay attention to when using the gate valve?
1, gate valve
The advantages of the gate valve are small resistance, tight shut-off, and no water hammer, which are widely used in various liquid and gas shut-off valves. It also has a certain adjustment function, but when it is partially opened, the shutter is easily wetted by the fluid, and when the fluid flows, it will cause the board to vibrate and the sealing surface is easy to wear.
The gate valve is one of the commonly used shut-off valves. It is mainly used to turn on or off the medium in the pipeline, and is not suitable for regulating the flow of the medium. The valve is suitable for a wide range of pressures, temperatures and calibers, especially for medium and large diameter pipes.
2, the ball valve
(1) The ball valve has a simple structure, the ball valve is lighter in weight than the gate valve, the structure is relatively simple, and the overall weight is very light, so it can exert a good effect in the low temperature medium system; the sealing surface is easy to process, and the sealing property is good. Easy to operate, quick switch, short start-up and shut-down time, can quickly optimize the test system, and no impact during valve start-up and shutdown.
(2) It can not be used to adjust the flow rate. It is suitable for high pressure (up to 320 gauge) pipelines. Currently, it can only be used below 200 °C due to the limitation of sealing materials. It can also be used for suspensions and viscosities. Medium. Moreover, its adjustment performance is worse than the shut-off valve, especially the pneumatic valve (or electric valve).
Stv Valve Technology Group has a full line of gate valves and ball valves, in addition to many other types of valves. See what we have here.
Today we have delivered 800PCS three-way ball valves to our customers. 1000wog L Port 3 Way Ball Valve with Locking Handle,DN15,SS304,BSPT END,800PCS
Description
Product Name
1000wog L Port 3 Way Ball Valve with Locking Handle
Modle
Q14F-1000WOG
Size
1/2″(DN15)
Body
stainless steel 304
Seat
PTFE
Stem
304
Ball
304
Matrial
ss304
Threaded Standard
BSPT
Application
Industrial Usage, Water Household Usage
Pressure
1000wog
Temperture Range
-20–200degree
Connection
Female Threaded
Suitable medium
water, oil, air and some corrosive liquid etc(WOG)
We have a huge range of 3 way ball valve manufacture,3 way ball valve 3/8,3 way ball valve full bore,3 way ball valve drawing,3 way ball valve datasheet,3 way ball valve dn50,3 way ball valve l port,3 way ball valve l&t,l port 3 way ball valve if you can’t find what you’re looking for, please get in touch with our sales team who will help you find what you need.
CAST STEEL GATE VALVE,RISING STEM, HANDWHEEL FLANGED-ENDS RF TO ANSI B16.10,BODY , BONNET: CAST STEEL A216 WCB STEM: A182 F6,TRIM: 13{8141c64f649aa10a30e48bdb99fa3eccf7af065b4b625c7c4d110ee570dfa2a6} CR,PAINTING: BRIGHT ALUMINIUM GREY PAINTED CLASS 150, 4″ 40PCS Very beautiful appearance, completed on time, ready to be sent to customers in Belgium。
Gate valve: The opening and closing part is the gate, the movement direction of the gate is perpendicular to the direction of the fluid.
Butterfly valve: The opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body.
Globe valve: The opening and closing parts are plug-shaped discs, the sealing surface is flat or conical, and the disc moves in a straight line along the center line of the fluid.
Butterfly valves: simple structure, small size, light weight, low material consumption, small installation size, fast switching, 90 degree reciprocating rotation, small driving moment and other characteristics. They are used to cut off, connect and regulate the medium in the pipeline. They have good fluid control characteristics and sealing performance.
Globe valve: The stem opening or closing stroke of this kind of valve is relatively short, and it has a very reliable cut-off function. Because the change of the seat opening is proportional to the disc travel, it is very suitable for flow regulation.
Different working principles
Gate valve: The gate plate of the gate valve moves in a straight line with the stem. It is called lifting bar gate valve, or open bar gate valve. Usually there are trapezoidal threads on the lifting rod. Through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into linear motion, that is to say, the operating torque is changed into the operating thrust.
Butterfly valve: A valve that opens, closes or regulates the flow of medium by reciprocating about 90 degrees with disc-type opening and closing parts. The butterfly valve not only has simple structure, small volume, light weight, less material consumption, small installation size, small driving moment, simple operation and rapid, but also has good flow regulation function and sealing characteristics.
Globe valve: The closing principle of stop valve is to make the sealing surface of disc and seat close together by the pressure of valve rod to prevent the flow of medium. Our country’s valve “three-way feed” once stipulated that the flow direction of globe valve should be from top to bottom, so there is directionality in installation.
The knife gate valve is a gate that opens and closes vertically along the body passage. The gate has the function of cutting off, and can be used in sewage or impurity pipelines.
The butterfly valve is a rotary valve. The butterfly valve rotates in the channel to open and close. It has flow loss and can only be used for pure medium.
Similarity: The valve body is thin and is used in low pressure pipelines.
VALVE:CHECK;STEEL, 300DIAX180MM L, WAFER TYPE QNSI SER#150 DBL DISC 316+EPDM SEAT APPLICATION: POTABLE WATER MFR: STV CORPORATION OR EQUIVALENT” NOTE: SEAT MATERIAL: TO BE ADVISEDHS:848180409 0
The WAFER check valve refers to a valve that automatically opens and closes the valve flap by means of the flow of the medium itself, and is used to prevent the back flow of the medium, which is also called a check valve, a check valve, a reverse flow valve, and a back pressure valve. The check valve is an automatic valve whose main function is to prevent backflow of the medium, prevent the pump and drive motor from reversing, and discharge the container medium. The check valve can also be used to supply a line in which the pressure may rise to an auxiliary system that exceeds the system pressure. The check valve can be mainly divided into a swing type check valve (rotation according to the center of gravity) and a lift check valve (moving along the axis)
working principle
The function of this type of valve is to allow only the medium to flow in one direction and to prevent the flow in the opposite direction. Usually, the valve is automatically operated, and the valve flap is opened by the fluid pressure flowing in one direction; when the fluid flows in the opposite direction, the fluid pressure and the self-reclosing valve flap of the valve disc act on the valve seat to cut off the flow.
Among them, the stainless steel wafer type check valve belongs to this type of valve, and includes a swing type check valve and a lift check valve. The swing check valve has a hinge mechanism and a door-like flap that rests freely against the inclined seat surface. In order to ensure that the valve flap can reach the proper position of the valve seat surface each time, the valve flap is designed in the hinge mechanism, so that the valve flap has enough swinging space and the valve flap is truly and comprehensively in contact with the valve seat. The flaps can all be made of metal, or they can be inlaid with leather, rubber, or synthetic coverings depending on the performance requirements. With the swing-open check valve fully open, the fluid pressure is almost unimpeded, so the pressure drop across the valve is relatively small. The valve flap of the lift check valve is located on the valve seat sealing surface of the valve body. In addition to the flap being free to lift and lower, the valve is like a shut-off valve. The fluid pressure causes the flap to lift from the seat sealing surface. The backflow of the medium causes the flap to fall back onto the seat and shut off the flow. Depending on the conditions of use, the flap can be of all metal construction or it can be in the form of a rubber or rubber ring on the valve disc holder. Like the shut-off valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than that of the swing check valve, and the flow rate of the swing check valve is limited. Very few].
Technical Parameters Nominal pressure or pressure level: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K Nominal diameter or caliber: DN15～900, NPS 1/4～36 Connection method: flange, butt welding, thread, socket welding, etc. Applicable temperature: -196 ° C ~ 540 ° C Body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti. Different materials can be used for water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.
The reason why the stainless steel forged steel valve adopts the forced sealing is that when the stainless steel forged steel valve is closed, the external force is forced to press the ram to the valve seat to ensure the sealing of the sealing surface. Stainless steel forged steel valves should generally be installed horizontally in the pipeline. When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the ram is pressed against the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, which is self-sealing.
STV Valve Has A lot of order shipped yesterday ANSI gate valves with 316,Ball Valve,Globe Valve,and Check Valve to South Africa。all the orders were delivered on time .https://youtu.be/mzGjHbmBREM
