News
30
2022
-
09
What are the structural features of the soft seal gate valve
Author:
Tell me about the structural features of soft seal gate valve
1、 The plastic used for the gate valve of the soft seal gate valve is completely plastic coated. The plastic and the gate valve are firm, not easy to fall off, and have elastic memory, so that the gate valve and the high-pressure gate valve can be tightly sealed and achieve good sealing performance;
2、 There is a concave groove at the bottom of the high pressure gate valve of the traditional gate valve. After the material flow, the residue contained in the material, such as stone, wood residue, iron pin, will deposit and deposit in the concave groove at the bottom of the high pressure gate valve. In the long run, the gate valve cannot be closed, causing leakage. The bottom end of the high pressure gate valve of the soft seal gate valve is a thick bottom design scheme, and the materials with impurities will not be deposited and silted when flowing through the oil circuit board, which makes the valve airtight.
3、 The oil circuit board shall be sprayed with powder epoxy resin adhesive, which can play an effective role in preventing the oil circuit board from being corroded and easy to rust.
4、 The oil circuit board is made of ductile casting materials. Compared with traditional gate valves, it is light and beneficial to assembly and maintenance.
Advantages and disadvantages of soft seal gate valve
Advantages of soft seal gate valve:
1. The flow resistance is small because the safe passage of the structural material inside the gate valve oil passage plate is direct, and the material changes its fluidity direction when flowing through the gate valve, so the flow resistance is small.
2. The opening and closing torque is small, and the opening and closing are relatively tight. Because the movement direction of the gate valve is vertical to the material fluidity direction when the gate valve is opened and closed, and compared with the stop valve, the opening and closing of the gate valve are relatively tight.
3. There is no restriction on the direction of material fluidity, and the material can pass through the gate valve at any direction without disturbing the flow and reducing the working pressure, which can achieve the effect of application. Applicable to the pipeline where the fluidity orientation of the medium is likely to change.
4. The structure length is slightly shorter because the gate valve of the gate valve is placed in the valve body vertically, while the piston valve of the stop valve is placed in the valve body horizontally, so the structure length is shorter than that of the stop valve.
5. High sealing performance to price ratio, less abrasion on the full opening convex surface.
6. When the valve is fully opened, the abrasion of the convex surface by the working medium is smaller than that of the stop valve.
7. The body is very simple, the forging process is good, and the scope of application is wide.
Defects of gate valve:
1. Long opening and closing time, high relative height
Because the gate valve needs to be fully opened or closed when it is opened or closed, the travel arrangement of the gate valve is large, the desired indoor space is used for opening, the size is high, and the indoor space required for assembly is relatively large.
2. Complex structure
Gate valves generally have two protruding faces, which adds some to production, processing, grinding and maintenance. There are many difficult parts, and production, manufacturing and maintenance are difficult, with very high costs.
3. Protruding surface is easily damaged
When opening and closing, there is relative friction between the two seals that the gate valve and the high-pressure gate valve touch, which is easy to damage, endangers the performance and service life of the hydraulic seals, and is difficult to repair.
Hot News
Precautions for using blowdown ball valve?
2021-09-15
Main： Butterfly valves, blind valves, gate valves, globe valves, ball valves, check valves, regulating valves, gates, metallurgical valves, hydraulic dams
Contact Us
Address: north of Longjiang Road, west of Jinping Road, Shangdi District, Zhengzhou City
Copyright © Henan Yuzhou Fluid Technology Co., Ltd. All rights reserved
Supported IPV6