Elastic Seat Gate Valve Sectional View
Keywords:
Valve Encyclopedia
Category:
- Product Description
-
Implementation standard
Design: GB/T12234; GB/T12232; API602
Flange connection: GB9124; GB/T17241.6
Structural length: GB12221; ANSI B16.10
Pressure Test: GB13927; API 598
Main Performance Specifications
Applicable medium
Operating temperature
Use pressure
Sealing inspection
Strength test
Water, oil products, etc.
≤80℃
1.0MPa
1.1MPa
1.5MPa
Water, oil products, etc.
≤80℃
1.6MPa
1.76MPa
2.4MPa
Product Overview
For a long time, conventional gate valves commonly used in the market have generally suffered from leakage or rusting. Our factory has introduced advanced European technologies for rubber and valve manufacturing to produce resilient-seated gate valves that effectively overcome the shortcomings of conventional gate valves, such as poor sealing performance, elastic fatigue, rubber aging, and rusting. Resilient-seated gate valves leverage the slight elastic deformation of their flexible valve members to achieve excellent sealing performance. These valves boast notable advantages including light operation when opening, reliable sealing, excellent elastic memory, and an extended service life. They can be widely used as regulating and shut-off devices on fluid pipelines in applications ranging from tap water and wastewater systems to construction, petroleum, chemical industry, instrumentation, pharmaceuticals, light textiles, power generation, shipbuilding, metallurgy, and energy systems.
Product Features
·Flat-seat valve:
Traditional gate valves often become clogged with foreign objects—such as stones, wood chips, cement, paper scraps, and other debris—that accumulate in the recess at the bottom of the valve after the pipe has been flushed with water. This can easily lead to the valve failing to close tightly, resulting in leaks. In contrast, the bottom of the soft-sealed gate valve features a flat design identical to that of the water pipe, making it less prone to debris accumulation and ensuring smooth, unobstructed fluid flow.
· Overall rubber coating:
The valve disc is entirely coated—both internally and externally—with high-quality rubber. The rubber vulcanization technology ensures that the vulcanized valve disc maintains precise geometric dimensions. Moreover, the rubber is securely bonded to the ductile iron gate plate, making it resistant to detachment and endowed with excellent elastic memory.
· Corrosion-resistant:
The valve body features a high-temperature epoxy coating that prevents corrosion and rusting, making it suitable for sewage systems.
· Not easily broken:
In the past, conventional cast iron gate valves often suffered from fractures caused by impacts, collisions, or overlapping with external objects. However, thanks to the adoption of ductile iron in this valve, such incidents have been significantly reduced.
. Three-O-ring seal:
Thanks to the valve stem’s sealing design featuring three “O”-ring seals, friction resistance during operation is reduced, significantly minimizing water leakage. Moreover, the seals can be replaced without interrupting the water supply, allowing for maintenance work to be carried out without shutting off the flow.
· Helps with drinking:
Since the valve body interior is coated with non-toxic epoxy resin and both the inner and outer surfaces of the gate are completely covered with rubber, there will be no rust or corrosion, making it suitable for drinking directly.
· Precision-cast valve body:
The valve body is manufactured using precision casting, and its exact geometric dimensions ensure that the valve achieves airtight sealing without any further machining inside the valve body.
· Lightweight:
This valve is made of ductile iron casting, reducing its weight by approximately 20% to 30% compared to conventional gate valves, and is easy to install and maintain.
Material Specification for Soft-Sealed Gate Valve Parts
Valve body
Ductile iron, cast iron, powder-coated
Gate valve
Ductile iron, fully rubber-coated
Valve stem
2Cr13
Bolt
2Cr13
Thrust bearing
Bronze
Valve stem lock nut
Bronze
O-ring
Nitrile rubber, ethylene propylene diene monomer
Valve cover
Ductile iron, powder coating
Handwheel
Ductile iron, powder coating
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Company address:
No. 55, Jinjiangnan Road, Shangjie District, Zhengzhou City, Henan Province
Phone:+86-371-68122889
Email:zzsfmjt@126.com
Mobile phone:+86-13703990948
Fax:0371-68122899
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