Underground Gate Valve
Production Overview
Vcore Underground Gate Valve is specially engineered for buried pipeline systems requiring safe, reliable shut-off without frequent access. Designed to be directly installed below ground level, this valve features a sealed, corrosion-resistant structure with an extended operating stem or with a square cap for wrench operation. It’s ideal for municipal water supply, fire hydrant systems, gas distribution, and industrial infrastructure where space and maintenance access are limited.
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Buried Installation Friendly – Compact body with external stem extensions or key caps.
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Non-Rising Stem Design – Space-saving, ideal for limited vertical clearance.
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Corrosion-Resistant Body – Ductile iron with epoxy lining resists soil and groundwater erosion.
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Full Port Flow – Minimal pressure drop, ensuring system efficiency.
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Sealed Bonnet Construction – Long-term reliability under buried conditions.
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Manual or Gearbox Operation – Suitable for hydrants, fire lines, and underground piping.
Technical Specifications
| Item | Description |
|---|---|
| Valve Type | Underground Gate Valve |
| Actuation | T-Key, Extension Spindle, Manual Gearbox |
| Valve Body | Ductile Iron (GGG50), Optional Carbon Steel |
| Gate Material | Ductile Iron + EPDM/NBR Rubber (Resilient Type) or SS (Metal Type) |
| Seat Material | EPDM / NBR / Metal (Stainless Steel) |
| Coating | Fusion Bonded Epoxy (FBE) Internal & External |
| Pressure Rating | PN10 / PN16 / 150LB |
| Temperature Rating | -10°C to +80°C (Rubber Seat) / up to 250°C (Metal Seat) |
| Size Range | DN50–DN1200 |
| Connection Type | Flanged, Socket Weld, MJ / Mechanical Joint |
| Bonnet Type | Sealed Bonnet, Buried Service Type |
| Stem Type | Non-Rising Stem |
| Media | Water, Gas, Firewater, Sewage |
| Standard Compliance | ISO 7259, EN 1074-2, AWWA C515, BS 5163 |
Main Dimensions & Weight
| DN (mm) | L (mm) | H (mm) | Weight (kg) |
|---|---|---|---|
| 50 | 150 | 250 | 12 |
| 100 | 230 | 340 | 24 |
| 150 | 280 | 430 | 36 |
| 200 | 330 | 520 | 52 |
| 300 | 400 | 670 | 80 |
| 400 | 480 | 820 | 125 |
| 600 | 600 | 1050 | 230 |
Function
The underground gate valve is primarily used for isolation purposes in buried pipelines, such as municipal water mains, fire systems, or distribution networks. Operated via T-wrench or extended rods, the gate moves vertically within the body, offering full shut-off or full open flow positions.
Its non-rising stem design makes it ideal for spaces with vertical constraints or where visual indication is not required. The internal sealing system ensures leak-free closure, while the external body coating ensures long-term corrosion protection when buried directly in soil.
Our underground gate valve adopts a non-rising stem design, ensuring minimal installation height while maintaining full-bore flow. The valve body and bonnet are typically made of ductile iron with internal epoxy coating for corrosion resistance. The sealing is either resilient seat (EPDM/NBR) for low-pressure systems or metal seat for higher-pressure and temperature applications.
Application
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Municipal Water Networks – Distribution pipelines and main lines
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Fire Hydrant Systems – Underground valves connected to hydrants
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Gas Distribution – Underground gas lines in industrial or urban areas
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Irrigation Systems – Agriculture and green area water lines
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Industrial Complexes – Factory utility piping networks
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Sewage and Drainage Systems – For low-pressure waste and stormwater pipelines
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Fire Protection Networks – Subsurface shut-off valves