What is the performance of the stainless steel gate valve?

Stainless steel gate valve performance:

Stainless steel gate valves are widely used in chemical, petrochemical, petroleum, paper, mining, electric power, liquefied petroleum gas, food, pharmaceutical, water supply and drainage, municipal, mechanical stainless steel valves, equipment supporting, electronics industry, urban construction and other fields. The valve is a control component in the pipeline fluid delivery system. It is used to change the passage section and the flow direction of the medium, and has the functions of diversion, cutoff, regulation, throttling, check, diversion or overflow relief. Valves for fluid control, from the simplest shut-off valves to the most complex self-control systems, are available in a wide variety of sizes and sizes. The nominal diameter of the valve ranges from very small instrument valves up to 10m. Valves for industrial piping. The valve can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metal and radioactive fluid. The working pressure of the valve can be from 0.0013MPa to 1000MPa. From ultra-low temperature of -269 ° C to high temperature of 1430 ° C.

The opening and closing member of the stainless steel gate valve is a gate. The direction of movement of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully open and fully closed, and cannot be adjusted and throttled. The gate has two sealing faces. The two sealing faces of the most common mode gate valves form a wedge shape. The wedge angle varies with the valve parameters, usually 50, and is 2°52′ when the medium temperature is not high. 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 a small amount of deformation to improve its processability and compensate for the deviation of the sealing surface angle during the machining process. Elastic shutter。

What is the meaning of a full-bore ball valve?

The diameter (or diameter) is the common diameter of various pipe and pipe fittings. Pipes of the same diameter and pipe fittings can be connected to each other and are interchangeable. It is not the actual outer diameter or inner diameter of the pipe, although its value is close to or equal to the inner diameter of the pipe.

In process piping systems, most valves are designed to limit the flow to a certain range by making the flow path or area of ​​the closure element smaller than the inner diameter of the line. Some ball valves can be designed such that their internal flow passages are of sufficient size to allow the flow to pass through without any significant restrictions. This ball valve is called a full bore ball valve because its internal flow path is equal to the full area of ​​the inlet and the full bore ball valve is primarily used for switching. And open circuit conditions.

The reduced diameter ball valve is a valve that closes the flow rate of the component. The flow area of ​​the opening of the closure element is less than the area of ​​the inner diameter of the line. The primary purpose of a reduced diameter ball valve is to control the flow by reducing or by intercepting, which is equivalent to adjusting the closure element to provide a different flow of material at a certain opening.

The biggest difference between a full-bore ball valve and a reduced-diameter ball valve is that the full-bore ball valve is a constant-width flow path, and its size cannot be less than the standard-specified value, which is roughly equivalent to the nominal diameter of the specification, such as the DN50 full-bore ball valve flow path. The diameter of the flow path of the reduced diameter ball valve is wider than the diameter of the flow path. The actual diameter of the flow path is about one specification smaller than the specification. For example, the diameter of the DN50 reduced diameter ball valve is about 38, which is roughly the same as the specification of DN40. quite.

What are the structural characteristics of the stainless steel knife gate valve?

Structural features of stainless steel knife gate valve:

The stainless steel gate valve is used in the coal preparation, slagging, urban sewage treatment, food, paper, medicine, petroleum, chemical and other oil, water and steam pipelines of the mine power plant, and the cement slurry and gold ore powder in the pipeline are connected or cut off. , mineral sand, slag, slime, pulp, wood pulp, tailings, fiber, dust, chemical treatment of sewage, sedimentation tanks, asphalt, silo exports, water is not beautiful, grain, slaughterhouse wastewater and other media. The stainless steel ram can prevent seal leakage caused by erosion, and the fine grinding and polishing treatment can achieve better sealing effect. The bottom end of the blade is processed into a blade shape, which has a cutting function for soft materials such as fiber, pulp, and wood pulp, and has excellent opening and blocking dip dyeing. A hard polytetrafluoroethylene scraper is installed on the upper end of the blade to prevent dust, gravel and other abrasive substances from entering the packing box, which can significantly improve the life of the blade. The raised sealing surface of the ram can scrape off the adhesive on the sealing surface and automatically break the roots.
The stainless steel gate valve body is durable and durable. The valve body reinforcement design improves the strength of the valve body, and the double head screw is used to open and close more quickly.

The overall stainless steel material prevents corrosion and damage. The valve body and the packing culvert are carefully forged, wherein the valve body is integrally forged by flange type, and the material can be selected according to the user’s needs: 304, 316, 316L, WCB, 2Crl3, and the sealing ring is made of PTFE reinforced PTFE material, which is resistant to erosion. It is resistant to abrasion and slag.

The full circular design of the parallel channel does not contain slag and is not blocked. The valve plate has 5 support points for a good self-centering of the valve plate. When the valve is in a blocked condition and subjected to back pressure, the valve plate does not shift. The triangular bracket saves raw materials and guarantees the required mechanical function. The knife-type gate valve can also be used with the drive head structure. The scientific meal packing and stuffing box design makes the meal safe and useful and durable. The short structure length can save raw materials, installation space, and also support the strength of the pipeline. The guide block on the valve body of the knife gate valve causes the shutter to behave correctly. The extrusion block ensures that the shutter is usefully sealed.

The V-shaped shutter can be used as a regulating valve. The design is compact, the space is small, the weight is light, the price is cheap, the installation is easy, the wear-resistant anti-blocking method is perfect, the maintenance is convenient, the use is convenient, the service life is long, and the drive assembly can be selected.

The knife-type gate valve has the advantages of simple and compact structure, reasonable design, light material, reliable sealing, sleek operation, small volume, fluent passage, small flow resistance, light weight, easy installation and easy disassembly. It has completely adjusted the common gate valve. The weight of the slab gate valve, globe valve, regulating valve, butterfly valve, ball valve and other valves, such as the weight, flow resistance, large area, difficult to install, etc., can be used to replace the general-purpose shut-off valve and regulating valve, which can work at 1.0MPa. – 2.5MPa, normal operation under the condition of temperature -29-550 °C. The gate of the knife gate valve has a shearing function, which can scrape off the adhesive on the sealing surface and automatically cut off the roots. The stainless steel gate can prevent seal leakage caused by erosion.

标签：stainless steel knife gate valve, structural characteristics of the stainless steel knife gate valve

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Stainless steel pneumatic ball valve manufacturers introduce the main features of the ball valve

Stainless steel pneumatic ball valve main features

1. The manual part can be made of steel plate pressed handle or stainless steel cast handle. The handle has a limit structure, and the limit is set at the position where the valve is opened and closed. When the valve is used on the key device, the lock block is provided with a lock hole to lock the switch position to avoid misoperation. There are obvious opening and closing signs on the handle.

2. The valve stem is integrally forged and conditioned by Q641F stainless steel pneumatic ball valve manufacturer 182f (1cr13), and the hardness reaches hb220～250. The valve stem is connected to the handle through a flat key or a spline or a deed, which is versatile and easy to assemble and disassemble. The valve stem is provided with an anti-blowing structure.

3. The valve packing is made of braided, flexible graphite sealing ring or tetrafluoroolefin sealing ring, which makes the valve stem achieve reliable sealing under certain lubrication conditions.

4. According to the needs, the ball valve can be designed as an anti-static structure. A conductive spring is arranged between the ball and the valve stem, the valve stem and the valve body to avoid electrostatic ignition and ignite flammable substances to ensure system safety.

5. The sealing pair has various forms. According to different working conditions, soft seal, hard seal, fireproof seat and other structures can be selected; below dn150 is the form of float ball, and below dn200 is fixed ball form.

6. The auxiliary valve sealing structure can be set at the valve seat of the ball valve. The grease filling valve can be installed at the valve seat and the valve stem. It can be temporarily sealed in case of emergency, and the valve stem can be lengthened as needed to be buried.

标签： main features of the ball valve, Stainless steel pneumatic ball valve manufacturers

The difference between high platform ball valve and ordinary ball valve

The high-platform ball valve is an evolution of the ordinary ball valve. It has all the functions of a common ball valve, and is more beautiful and more refined than a normal ball valve.

It is very convenient to install electric or pneumatic actuators with platform ball valves. It also saves costs without racks, improves production efficiency, and greatly improves the stability between valves and actuators.

The performance is also very stable in use, it will not affect the application of the whole valve because the bracket is loose or the coupling clearance is too large. Or ordinary ball valves can’t do it.

High-platform ball valves can be fitted with actuators directly, while ordinary ball valves require an upper bracket to hold the actuator. The high platform ball valve and the flange gate valve are the same type of valve. The difference is that the closing member is a sphere, and the ball rotates around the center line of the valve body to open and close the valve. The ball valve is mainly used in the pipeline to cut, distribute and change the flow direction of the medium.

Why stainless steel ball valves are widely used？

Ball valves are mostly spherical in shape and generally have long switches for the user to manipulate the switches of the ball valves. With the development of technology, in addition to manual control of the switch, the current ball valve will be more efficient and convenient through automatic control. Due to its low cost, wide range of use, long life and wear resistance, ball valves are widely used in life, factories and other fields.

So what is the principle of the ball valve, so that it has such a strong advantage?

The ball valve can control the internal partition or communication of the pipe in the pipeline or waterway. It can effectively control the circulation of liquids and gases. It only needs to turn the valve stem gently to control the flow, and the ball valve has good airtightness, so it is very convenient to use.

Second, from its structure. Although the structure of the ball valve is simple, it can perform a good airtight function and can effectively control the opening and closing of the switch. Inside the ball valve, there are two upper and lower bearings connected to the valve stem of the ball valve, so that the ball valve can more sensitively control the switch of the ball valve. There is a sphere inside the ball valve with a small hole in it. By pulling the valve stem, the bearing can be rotated to control the rotation of the ball, thereby quickly controlling the flow of water and gas. As long as the valve stem is gently pulled, it takes only two seconds to close the switch, reducing water flow or gas loss, and saving resources.

On the other hand, from the material of the ball valve. The material of the ball valve is generally made of composite material, and the alloy material made of the ball valve has very strong corrosion resistance and wear resistance. Therefore, the life of a ball valve is very long, and the internal structure of the ball valve is simple and stable, and it is easy to replace, and the maintenance area is also very convenient. The material principle makes the ball valve durable and has a very high use value.

The ball valve’s sphere also embodies its working principle. The spherical surface of the ball valve will be covered with a layer of colloidal film. Whenever the switch needs to be closed, the film will have a very good sealing effect, which can fill the gap between the ball and the valve wall to prevent water leakage. Therefore, the ball valve has very good airtightness.

Because of these working principles, the ball valve will have such a strong advantage. Because of these advantages, the ball valve will enter thousands of households and be widely used.

What is the characteristic of the globe valve?

The globe valve, also called the gate, is the most widely used type of valve. Due to its own performance, it is not only suitable for medium and low pressure, but also for high pressure. Next, stv will specifically introduce what is a globe  valve? What are the characteristics of the globe valve?

A globe valve  is a valve that moves a closure (valve) along the centerline of the seat. Depending on the form of movement of the flap, the change in the seat opening is proportional to the flap travel. Due to the relatively short opening or closing stroke of the valve stem of this type of valve, and the very reliable cutting function, and because the change of the valve seat opening is proportional to the stroke of the valve flap, it is very suitable for the adjustment of the flow rate. Therefore, this type of shut-off valve is very suitable for use as a cut-off or adjustment and throttling. The most obvious advantage of the shut-off valve is that during the opening and closing process, the friction between the valve flap and the sealing surface of the valve body is smaller than that of the gate valve, so it is wear-resistant. The opening height is generally only 1/4 of the diameter of the seat channel and therefore much smaller than the gate valve. Usually there is only one sealing surface on the valve body and the valve flap, so the shut-off valve is more technically manufacturable, and the shut-off valve is convenient for maintenance.

The globe valve body is the primary pressure bearing component of the valve and houses the closure element. The flow passages in the shut-off valve are designed to have a smooth arc inner wall without sharp corners and sharp edges, which provides a smooth process flow without abnormal turbulence and noise. The flow channel itself must have a constant area to avoid any additional pressure loss and excessive flow rate. The shut-off valve has a wide end connection, so the valve body can be used for almost every type of end connection, although the face-to-face dimensions are too long to accommodate the flangeless structure (bolt the valve between the two line flanges) Body, which is common in rotary valves). For a shut-off valve, mismatched end connections are also possible.

China Integral Forged Flange Gate Valve,Small Forged Gate Valve Integral Flanged,Integral Flanged Gate Valve,Forged Steel Integral Flanged End Gate Valves,China 150lb gate valve Manufacturer with high quality and competitive price.

F304 Integral Flange Forged Gate Valve,DN20,150LB,API 602

Model:STV-Z41H-150LB-F304-DN40

F304 Integral Flange Forged Gate Valve mainly suitable for the pipelines of various systems of thermal power stations, cutting or connecting the pipeline medium. Applicable medium: non-corrosive medium such as water and steam. Compared with other valve products, the integral flange forged steel valve is characterized by high temperature and high pressure and unique self-sealing design. The higher the pressure, the more reliable the seal. Due to the special technical characteristics and working conditions, the products also form features that cannot be replaced by other products.

STV Valve Technology Group Co., Ltd is a professional leader China Integral Forged Flange Gate Valve,Small Forged Gate Valve Integral Flanged,Integral Flanged Gate Valve,Forged Steel Integral Flanged End Gate Valves,China 150lb gate valve Manufacturer with high quality and competitive price.

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Date Sheet:F304 Integral Flange Forged Gate Valve,DN20,150LB,API 602

China Forged Steel Gate Valves Welded Bonnet Class 1500,Welded Bonnet Forged Steel Valves,Forged Steel Weld Bonnet Gate Valve,Forged steel gate valve to API 602,China DN50 Gate Valve Manufacturer with high quality and competitive price.

1500LB Forged Steel Weld Bonnet Gate Valve,A105N Body,DN50,Socket Weld End

Model:STV-Z61YW-1500LB-A105N-2″

1500LB Forged Steel Weld Bonnet Gate Valve of the handwheel transmits torque to the valve stem through the stem nut. the valve stem is forged and tempered with A182F6 (1Cr13) and has a hardness of HB220-250. in order to reduce the loss of power during the transmission process, the stem nut is made of high-nickel ductile iron A439GR.D2 or copper alloy (high-nickel ductile iron has certain self-lubricating properties), and the hardness is about HB50 smaller than the valve stem.

Forged steel gate valves are suitable for small diameter pipes with operating temperatures of -29-450 ° C (carbon steel) or -29-500 ° C (stainless steel). It is used to cut or connect the media in the pipe. Different materials can be used. In water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.

STV Valve Technology Group Co., Ltd is a professional leader China Forged Steel Gate Valves Welded Bonnet Class 1500,Welded Bonnet Forged Steel Valves,Forged Steel Weld Bonnet Gate Valve,Forged steel gate valve to API 602,China DN50 Gate Valve Manufacturer with high quality and competitive price.

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Date Sheet:1500LB Forged Steel Weld Bonnet Gate Valve,A105N Body,DN50,Socket Weld End

China Full Port 2000 WOG Ball Valve,Ball Valves 2000 WOG A216 WCB,2000 WOG Carbon Steel Ball Valve,China 2000 WoG Ball Valve Manufacture

2 Piece 2000 WOG Carbon Steel Ball Valve,Full Port,BSPP End

Model:STV-Q11F-2000WOG-1″

2000WOG ball valve is suitable for fresh water, sewage, sea water, air, steam, food, medicine, chemical, various oils, acid and alkali and salt. 2000WOG ball valve design advantages: handle type with limited position, locking device, prevent mistakes Operation, more safe and reliable. 2000WOG ball valve connection: thread.

STV Valve Technology Group Co., Ltd is a professional leader China Full Port 2000 WOG Ball Valve,Ball Valves 2000 WOG A216 WCB,2000 WOG Carbon Steel Ball Valve,China 2000 WoG Ball Valve Manufacture with high quality and competitive price.

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Date Sheet:2 Piece 2000 WOG Carbon Steel Ball Valve,Full Port,BSPP End

150LB Cast Steel Ball Valve, 2-Piece Trunnion Mounted Ball Valve, 24 Inch API 6D Cast Steel Trunnion Mounted Ball Valves, API 6D Cast Steel Trunnion Mounted Ball Valves, Cast Steel Trunnion Mounted Ball Valve, Trunnion Mounted Ball Valves

Cast Steel Ball Valve,Full Bore,Trunnion Mounted,24 Inch,150LB

Model:STV-Q347F-150LB-WCB-24″

Under the action of medium pressure, Ansi Cast Steel Ball Valve can produce a certain displacement and press tight on the sealing surface at the outlet end to ensure the sealing of the outlet end. The floating ball valve has a simple structure and good sealing performance, but the load of the ball subjected to the working medium is all transmitted to the outlet sealing ring, so it is necessary to consider whether the sealing ring material can withstand the working load of the spherical medium. This structure is widely used in high and medium pressure ball valves.

It is mainly used in various high-pressure medium conveying pipelines in chemical, metallurgy, petroleum, pharmaceutical and other industries. The applicable temperature is -196~450 °C; driving mode: manual, pneumatic, electric, hydraulic, turbine, etc.; nominal diameter: 1/2″~12″; nominal pressure: 150LB~1500LB; applicable medium: water, gas, oil, natural gas and acid-alkaline corrosion medium.

STV Valve Technology Group Co., Ltd is a professional leader China 150LB Cast Steel Ball Valve,24 Inch API 6D Cast Steel Trunnion Mounted Ball Valves,API 6D Cast Steel Trunnion Mounted Ball Valves,2-Piece Trunnion Mounted Ball Valve,Cast Steel Trunnion Mounted Ball Valve Manufacturer with high quality and competitive price.

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Date Sheet:Cast Steel Ball Valve,Full Bore,Trunnion Mounted,24 Inch,150LB

China Stainless Steel Flanged Ball Valve,Stainless Steel 3 Piece PN40 Flanged Ball Valve ,3PC Flanged Ball Valve,3PC MOUNTING PAD FLANGE BALL VALVE,3pc Flange End Full Bore Ball Valve, Stainless Steel 3 Piece PN40 Flanged Ball Valve manufacture

Our Stainless Steel Flanged Ball Valve and the gate valve are the same type of valve. the difference is that the closing member is a ball, and the ball rotates around the center line of the valve body to open and close a valve. The ball valve is mainly used in the pipeline to cut, distribute and change the flow direction of the medium. The three-piece ball valve is a new type of valve that has been widely used in recent years.

advantage
1. The fluid resistance is small, and its resistance coefficient is equal to the pipe length of the same length.
2. The structure is simple, small in size and light in weight.
The three-piece flange ball valve can be divided into a straight-through type, a three-way type and a right angle type according to the channel position. The latter two ball valves are used to distribute media and change the flow direction of the media

STV Valve Technology Group Co., Ltd is a professional leader China Stainless Steel Flanged Ball Valve,Stainless Steel 3 Piece PN40 Flanged Ball Valve ,3PC Flanged Ball Valve,3PC MOUNTING PAD FLANGE BALL VALVE,3pc Flange End Full Bore Ball Valve, Stainless Steel 3 Piece PN40 Flanged Ball Valve manufacturer with high quality and competitive price.

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Date Sheet:Stainless Steel Flanged Ball Valve,DN 25,150LB,3-piece

Pneumatic Actuator Operated 3 Piece Design Ball Valve, pneumatic actuator with 3 pc stainless steel ball valve, Pneumatically Actuated Ball Valves

Model；STV-Q611F-DN50-2″

We have a wide range of Pneumatic Ball Valve for Water, Gas, Air & Oil Applications. This Valve we Designed 3 (Three) Piece Floating which has Standard Design, Valve Face to Face Dimension, Leakage Class and other useful Specifications.

We make Our Pneumatic Ball Valve in ½” to 4” with three end connection Screwed End, Flanged End, and Socket Weld so complete solution for Industry and Users. Automation design and manufacture a range of high integrity instrumentation Pneumatic Ball valves for worldwide applications, yes we supply worldwide as per customer requirement and their drawing.

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Date:Pneumatic Actuated Ball Valve,3PC Body,SS304,NPT End