Extended Stem Gate Valve for Buried and Underground Pipelines
Extended-stem gate valve designed to position the operating mechanism above deep-buried pipelines for accessible isolation without confined-space entry.
| Size Range | 2″–60″ (DN50–DN1500) |
|---|---|
| Pressure Rating | ASME Class 150–2500 (PN16–PN420) |
| Body Material | Carbon steel, stainless steel, alloy steel, duplex steel, etc. |
| Connection Type | RF, BW, etc. |
| Operation | Manual, bevel gear, pneumatic, electric, etc. |
Frequently Asked Questions
It places the operating mechanism at an accessible location so personnel do not need to enter deep wells or confined spaces.
Deep-well networks, underground pipelines, tunnel engineering, long-distance oil and gas pipelines and underground fire-protection systems are listed.
The required extension should be confirmed against burial depth, access arrangement and operating-interface position during technical review.
Manual, bevel gear, pneumatic and electric options are listed on the original page.
Provide burial depth, medium, operating conditions, connection, actuation, quantity and project documentation.
Product Overview
This extended stem gate valve is designed for pipelines installed deep underground. Its elongated stem transfers the operating interface to an accessible elevation, reducing the need for personnel to enter wells or confined spaces.
The gate provides on-off pipeline isolation, while the extended operating arrangement suits deep-well networks, underground lines and tunnel engineering. The original page also lists long-distance oil and gas transmission and underground fire-protection systems.
The published information states API 6D compliance for buried pipeline service. Final configuration should match burial depth, piping layout and control requirements.
- Accessible Operation: Moves the operating point above the buried valve location.
- Buried Pipeline Service: Designed for deep-well, underground and tunnel installations.
- Application Range: Listed for oil and gas transmission and fire-protection systems.
- Actuation Options: Manual, bevel gear, pneumatic and electric operation are available.
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