American standard gate valves are limited to regulation or throttling

Characteristics of American standard gate valves for a long time, the common gate valves used in the market generally have the phenomenon of water leakage or rust. The elastic seat seal gate valve produced by our enterprise by introducing European high-tech rubber and valve manufacturing technology overcomes the defects of poor sealing and rust of common gate valves. The elastic seat seal gate valve uses the compensation effect of slight elastic deformation of elastic gate to achieve good sealing effect, The valve has the advantages of light switching, reliable sealing, good elastic memory and service life. It can be widely used as regulating and intercepting devices on the pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, light textile, electric power, shipping, metallurgy, energy system, etc.

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American standard gate valve has the characteristics of small fluid resistance and large applicable pressure and temperature range. American standard gate valve is one of the most commonly used block valves, which is used to cut off or connect the medium in the pipeline. When fully opened, the whole flow is straight through, and the pressure loss of medium operation is the smallest. American standard gate valve is usually suitable for the working condition that does not need to be opened and closed frequently and keeps the gate fully open or closed The gate valve is not suitable for regulating or throttling. For high-speed flowing medium, the gate can cause vibration when the gate is partially opened, and the vibration may damage the sealing surface of the gate and valve seat, and throttling will cause the gate to be eroded by the medium.

Introduction to the simple working principle of 6 American standard gate valves:

① Ball American Standard valve

The working principle of the ball American Standard valve is to make the American Standard valve unblocked or blocked by rotating the American Standard valve. The ball American Standard valve has the advantages of light switch, small volume, large diameter, reliable sealing, simple structure and convenient maintenance. The sealing surface and spherical surface are often closed, not easy to be eroded by media, and has been widely used in various industries. The ball American Standard valve is divided into two types: floating ball type and fixed ball type Ball.

② Butterfly American Standard valve

Butterfly American Standard valve is also called butterfly American Standard valve. As its name implies, its key components are like butterflies whirling freely in the wind. The American Standard valve flap of butterfly American Standard valve is a disc, which rotates around an axis in the American Standard valve seat. The rotation angle is the opening and closing degree of American Standard valve. Butterfly American Standard valve has the characteristics of lightweight, saving materials than other American Standard valve doors, simple structure and rapid opening and closing, Both cut-off and throttling can be used, with small fluid resistance and labor-saving operation. Butterfly American Standard valves can be made into large diameters. Where butterfly American Standard valves can be used, it is best not to use gate American Standard valves, because butterfly American Standard valves are more economical than gate American Standard valves and have good adjustability. At present, butterfly American Standard valves are widely used in hot water pipelines.

③ Stop American Standard valve

American Standard stop valve, also known as stop valve, is the most widely used American Standard valve door. Its popularity is due to the small friction between sealing surfaces during opening and closing, relatively durable, small opening height, easy manufacture and convenient maintenance. It is not only suitable for medium and low pressure, but also suitable for high pressure. Its closing principle is to make the American Standard valve flap sealing surface and American Standard valve by relying on the pressure of American Standard valve rod The sealing surface of the gate seat fits closely to prevent the medium from flowing. The American Standard cut-off valve only allows the medium to flow in one direction and has directionality during installation. Its structural length is greater than that of the American standard gate valve. At the same time, the fluid resistance is large, and the sealing reliability is not strong during long-term operation. American Standard cut-off valves are divided into three categories: straight through, right angle and DC inclined cut-off American Standard valves.

④ Check American Standard valve

Check American Standard valve is an American Standard valve that automatically opens and closes depending on the force of fluid itself. Its function is to prevent medium backflow. It has many names, such as check American Standard valve, one-way American Standard valve, single flow valve, etc. it can be divided into two categories according to structure. (1) Lifting type: the American Standard valve flap moves along the vertical center line of the American Standard valve body. There are two kinds of check American Standard valves: one is horizontal, installed in horizontal pipeline, the shape of American Standard valve body is similar to that of stop American Standard valve, and the other is vertical, installed in vertical pipeline. (2) Swing type: the American Standard valve flap rotates around the pin shaft outside the seat. This kind of American Standard valve valve can be divided into single flap, double flap and multi flap, but the principle is the same. The American Standard valve at the suction bottom of the water pump suction pipe is to check the deformation of the American Standard valve. Its structure is the same as the above two kinds of American Standard valves, but its lower end is open so that water can enter

⑤ Pressure reducing American Standard valve

Pressure reducing American Standard valve is an automatic American Standard valve that reduces the medium pressure to a certain value. Generally, the back pressure of American Standard valve is less than 50% of the front pressure of American Standard valve. There are many kinds of pressure reducing American Standard valves, mainly piston type and spring film type.

Piston pressure reducing American Standard valve is an American Standard valve that reduces pressure through the action of piston. Spring film pressure reducing American Standard valve relies on spring and film for pressure balance.

⑥ Gate American Standard valve

Gate American Standard valve, also known as gate American Standard valve, is a widely used American Standard valve. Its closing principle is that the sealing surface of the gate and the sealing surface of the American Standard valve seat are highly smooth, flat and consistent, and fit with each other, which can prevent the flow of medium, and enhance the sealing effect by relying on the top mold, spring or gate mold. It mainly plays a cutting role in the pipeline. The advantage of gate American Standard valve is: fluid The utility model has the advantages of low resistance, low opening and closing force, and can be used under the condition of two-way flow of medium. It has no directionality. When fully opened, the sealing surface is not easy to be eroded, and the structural length is short. It is not only suitable for making small American standard valve doors, but also suitable for making large American Standard valve doors. American standard gate valves are divided into two types according to American Standard valve rod threads, one is open rod type, the other is concealed rod type. According to the gate structure, it is also divided into two types, one is parallel and the other is mode.