Non Rising Stem Resilient Seated Gate Valves, Cast iron, Ductile iron

Non Rising Stem Resilient Seated Gate Valves, Cast iron, Ductile iron

Key Specifications / Features

China Non Rising Stem Resilient Seated Gate Valves Manufacturer Shinjo Supplies Non Rising Stem Resilient Seated Gate Valves, Cast iron, Ductile iron.
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Detail Information

Non rising stem resilient seated gate valve summary

The valves disc is rubber-packed to get excellent sealing effect by the rubber's resilient deformation. Non-rising resilient seated gate valves solve the problem in general gate valves such as leakage, rusting etc. and saves installation space. It is used widely in tap water industry, sewage treatment, shipping construction, petroleum, chemicals, food, pharmacy, textile, electric power, metallurgy and energy system's pipeline to adjust and shut off fluids.
Technical Parameters
Nominal pressure: 1.0-2.5MPa
Working temp.:0-120°C
Flanged end: GB/T17241.6 GB9113
Nominal diameter: 50-400mm
Service: water, Sewage, oils, gas etc.
Inspection and test: API 598

Non Rising Stem Resilient Seated Gate Valves Structure
Non rising stem resilient seated gate valve

Materials
Serial no. part material
1 Body Grey cast iron, ductile cast iron, cast steel
2 Disc Ductile cast iron packed with rubber or EDPM outside
3 Bolt Carbonized treatment
4 Gasket Buna-N rubber or EDPM
5 Cover Grey cast iron, ductile cast iron, cast steel
6 Stem stainless steel
7 O-ring Buna-N rubber or EPDM
8 Thrust bearing Gun metals
9 Bolt Stainless steel
10 Gland ductile cast iron, cast steel
11 Dust proof gasket Buna-N rubber
12 Hand wheel(transmission cap) Cast iron

Dimensions
DN 50 65 80 100 125 150 200 250 300 350 400 450 500 600
L 178 190 203 229 254 267 292 330 356 381 406 432 457 508
H (min)(full close) 313 332 372 424 497 562 680 837 948 1010 1220 1280 1480 1665
H (max)(full open) 355 375 415 476 540 600 720 875 990 1050 1245 1310 1560 1750

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FAQs

What is a Non-Rising Stem Gate Valve?

A valve where the stem does not move vertically but rotates internally to raise or lower the gate. This design is ideal for installations with limited vertical space.

How Does a Non-Rising Stem Gate Valve Work?

The handwheel turns the stem, which in turn moves the gate up or down inside the valve body without changing the external height of the stem.

How Does a Rising Stem Gate Valve Work?

The handwheel lifts the stem and gate together, providing a visual indication of whether the valve is open or closed.

Which Valve Should I Choose?

Use a rising stem valve for above-ground applications where visibility and ease of maintenance are important.

Use a non-rising stem valve for underground or space-limited installations.

Conclusion

The choice between rising stem and non-rising stem gate valves depends on your specific application needs. For clear valve status indication and easy maintenance, go with a rising stem valve. For compact installations, a non-rising stem valve is the better option.

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