Views: 0 Author: J-VALVES Publish Time: 2024-04-27 Origin: Site
The sealing performance of the wedge gate valve mainly depends on the tight combination of the wedge-shaped gate and the valve seat. Its sealing surface forms a certain angle with the vertical centerline (usually 2°52', 3°30', 5°, 8°, 10°, etc.). This design enables the gate to wedge into the valve seat when closed, forming a tight seal. The sealing surface of the wedge gate valve is usually made by surfacing hard alloy, which is wear-resistant, high-temperature resistant, has good anti-galling performance and a long service life. In addition, the valve stem of the wedge gate valve is quenched and tempered and surface nitrided, having good corrosion resistance and anti-galling property.
The sealing performance of the double palte gate valve depends on the pre-tightening force applied by the spring or wedge-shaped mechanism between the two parallel gates. In the closed state, the gates are pushed by the medium pressure to closely adhere to the valve seat, forming a double-seal surface. This design not only increases the sealing contact area but also reduces the leakage path, and is especially suitable for high-pressure and high-cleanliness-required working conditions. The sealing surface of the double palte gate valve is surfaced with hard alloy (such as Stellite 6), and the surface hardness reaches above HRC55, which can withstand fluid media containing particles.
Sealing Reliability: The double-disc design and spring pre-tightening force of the double palte gate valve make it have higher sealing reliability under high-pressure working conditions, especially suitable for occasions that require two-way sealing. Although the wedge-shaped design of the wedge gate valve has excellent sealing performance, it may require higher operating torque to ensure sealing in a high-pressure environment.
Applicable Media: The double palte gate valve is more suitable for handling fluid media containing particles because its sealing
The wedge gate valve has good durability. Its valve body and internal components are usually made of high-strength materials, enabling it to withstand high-pressure and
high-temperature environments. In addition, its sealing surface adopts hard alloy surfacing technology, which has good wear resistance and anti-scuffing performance.
The double plate gate valve also has excellent durability. Its sealing surface is surfaced with hard alloy, featuring high surface hardness, which can effectively resist particle erosion. Moreover, the seat of the double plate gate valve can be replaced online, making maintenance convenient.
Maintenance cost: The double plate gate valve has a relatively low maintenance cost. Its seat can be replaced online without the need to disassemble the valve body. However, the maintenance of the wedge gate valve is relatively complex and requires professional tools and skills.
