Tiếng Việt
ភាសាខ្មែរShin Yi-Non-rising stem gate valve with a handwheel is a common type of valve used in industrial piping systems, mainly for straight-flow liquids. These valves should not be used to regulate flow unless they are specifically designed for that purpose. Gate valves open and close by lifting and lowering the valve leaf out of the fluid path.
Specifications
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Product Code
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RVHX |
| Design Standard | BS 5163-1 ISO7259 AWWA C509 BS EN 1074-1 |
| Connection/Flange Standard | BS EN 1092-2|ISO 7005-2: PN10/16/20 JIS B2220: JIS 10K/16K/20K ASME B16.42: ANSI 150LB |
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Size Range
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DN50 – DN1200 |
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Face To Face Standard
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BS EN 558-1 TABLE 1 SERIES 3 ISO 5752 TABLE 1 SERIES 3 ASME B16.10 |
Structural drawing of Shin Yi-Non-rising stem gate valve with a handwheel
Structure and working principle of gate valve
Cast iron valves connect to the pipeline by flanges at both ends, or shackles for HDPE pipes. Valves and pipes are connected by bolts. Gaskets are inserted between the two flanges of the valve and the pipe so that the connection has a high degree of tightness.
–Valve body is cast from FCD450 Cast Iron, coated on both sides with Epoxy paint with thickness >= 300 μm.
– In the valve cap at the top, there is a space to store the valve leaf when opening the valve, the bolt holes are submerged into the body and poured with glue or candle wax to prevent dust, water, and moist air from jamming and rusting the bolt.
– The valve leaf is wedge-shaped, and made of Cast iron, and the outside is covered with a layer of EPDM rubber that is safe with clean water.
– The valve leaf is fixed to one end of the valve stem by a pin (pin), and the upper end of the valve stem is connected to the handwheel by a threaded hole, above the valve cap the position of the valve stem has a sealing cap. This cap has a sealing function to prevent material from leaking out. When turning the handwheel, the valve stem will move up and down to open or close the valve. So we call this a Non-rising stem gate valve with a handwheel. When observing the position of the valve stem, we can tell whether the valve is in the open or closed position because when the valve is in the open state, the valve stems protrudes straight up from the handwheel.
Advantages of gate valve:
Modern design, easy to disassemble, easy to maintain The valve body is designed to avoid jamming The inside and outside of the valve are coated with epoxy to avoid corrosion from the outside environment The valve leaf is covered with high-grade rubber that meets the safety standards for drinking water.
You can download the catalog of all kinds of Shin Yi floating gate valves, Shin Yi gate valves here: Shin Yi-Non-rising stem gate valve with a handwheel catalog
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