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A brief overview of manual gate valves and corresponding market needs

by:Sino Valves     2021-11-28
Manual gate valve overview The opening and closing part of the manual gate valve is the gate. The movement direction of the gate 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 model gate valve form a wedge. The wedge angle varies with valve parameters. The gate of the wedge gate valve can be made into a whole, called a rigid gate, or it can be made into a gate that can produce a small amount of deformation to improve its manufacturability and make up for the deviation of the sealing surface angle during the processing. The plate is called an elastic gate. When the selected manual gate valve is too large or the pressure is too high, gear transmission should be adopted, and the normal handwheel can be selected unilaterally to operate. Advantages of manual gate valve: 1. The fluid resistance is small, and the sealing surface is less brushed and corroded by the medium. 2. It saves effort to open and close. 3. The flow direction of the medium is not restricted, does not disturb the flow, and does not reduce the pressure. 4. The shape is simple, the length of the structure is short, the manufacturing process is good, and the scope of application is wide. Manual gate valve features: light weight: the body is made of high-grade nodular black cast iron, the weight is about 20%~30% less than the traditional gate valve, and it is easy to install and maintain. Flat-bottomed gate seat: The traditional gate valve often deposits in the groove at the bottom of the valve due to foreign objects such as stones, wood, cement, iron filings, sundries, etc. after the pipe is washed with water, which can easily cause water leakage. The bottom of the elastic seat-sealed gate valve adopts the same flat-bottom design as the water pipe machine, which is not easy to cause debris siltation and makes the fluid flow unimpeded. Integral encapsulation: The gate adopts high-quality rubber for the overall inner and outer rubber. European first-class rubber vulcanization technology enables the vulcanized gate to ensure accurate geometric dimensions, and the rubber and ductile cast gate are firmly connected, not easy to fall off and Good elastic memory. Precision casting valve body: The valve body adopts precision casting, and the precise geometric dimensions make the inside of the valve body without any fine machining to ensure the sealing of the valve. Features of manual slab gate valve:    manual single and two-way slab gate valve has simple structure, light weight, flexible operation, convenient assembly and disassembly, made of high-quality carbon steel, high strength, good performance, and long service life; the screw and nut adopt soft protection The cover structure is not affected by external dust.  Manual slab gate valve use:   Manual single and two-way slab gate valve is suitable for pipelines for controlling the flow of dust materials in building materials, metallurgy, mining and other industries. It is an ideal equipment to control the flow of dust materials. The working principle of manual flat gate valve:    manual single and two-way flat gate valve is mainly composed of frame, screw nut, hand wheel, sprocket, hand wheel (sprocket) rotates, and the screw rod carries the screw nut and gate for horizontal reciprocation Movement to achieve the purpose of opening and closing the valve. Market demand For a long time, the general gate valves used in the market generally have water leakage or rust. The elastic seat seal gate valve produced by the introduction of European high-tech rubber and valve manufacturing technology overcomes the defects of general gate valves such as poor sealing and rust. The elastic seat The sealing gate valve uses the compensation function of the elastic gate plate to produce a small amount of elastic deformation to achieve a good sealing effect. The valve has the obvious advantages of light switch, reliable sealing, better elasticity and service life. It can be widely used as a regulating and intercepting device on the pipelines of tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electric power, shipbuilding, metallurgy, energy system, etc. Ordering instructions: (national standard) 1. A: product name, model, nominal diameter B: medium and temperature, pressure range C: whether there are accessories, delivery date, special requirements, etc. so that we can choose the correct model for you. 2. If the valve model of our company has been selected by the design unit, please order directly with our sales center according to the valve parameters. 3. When the occasion you use is very important or the environment is more complicated, please provide design drawings and detailed parameters, and our engineers and experts will concentrate on reviewing and analyzing for you. We can provide you with professional solutions, including design, customization, complete sets, operation, and service. We have been committed to the leader in the valve industry, providing you with the latest valve knowledge, the best service, and the best technical consultants. Thank you for visiting our website [www.quanlivalve.com], if you have any questions, you can call us, we will do our best to provide you with quality service. Our factory specializes in providing ball valves, butterfly valves, gate valves, globe valves, check valves, pressure reducing valves, safety valves, marine valves, oil field valves, water conservancy control valves and other valves.
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