Types of Valves Used in Underground Applications

Underground valves keep pipelines running smoothly and safely under harsh conditions. These endure pressure and moisture with limited maintenance and access, making them among the most critical components in various industries worldwide. Let’s look at the main types, roles, and what makes them suitable for underground work.

What is an Underground Valve?

An underground valve is installed below ground to regulate liquid or gas flow in buried pipelines for systems such as water, oil, and gas, as well as mining. Since it’s hard to reach, it needs to be built from strong materials and must operate dependably.

Here’s what makes it special:

• The valve is made of robust material, which prevents rust and corrosion underground.
• It has leak-proof seals, helping avoid contamination and system product loss.
• It has extended stems that allow operation from above ground without excavation.
• The valve has a long service life, reducing repair costs and downtime.

Main Types of Underground Valves

Different underground systems require specific valves depending on their flow, pressure, and fluid type.

Forged Steel Gate Valve

Robust construction ideal for underground on/off control. Designed to withstand corrosion and pressure in buried pipelines.

View Gate Valve

Forged Steel Ball Valve

Compact and reliable for quick shut-off. Durable sealing performance ensures safety in hard-to-access underground systems.

View Ball Valve

Here are some of the most commonly used kinds:

• Gate Valves – Designed for on/off control. Gate valves for underground use a sliding gate to stop or allow flow. They are ideal valves for mining, water, and oil pipelines.
• Check Valves – Allow flow in one direction only, preventing backflow in buried pipelines. Check valves underground are ideal for wastewater and oil transport.
• Ball Valves – Compact and reliable. They are used in systems that require a quick shut-off. See our Ball Valves for more details.
• Butterfly Valves – Lightweight and easy to install in large-diameter systems.
• Globe Valves – Used to regulate flow in applications where precise control is required. Learn more about Globe Valves types.
• Pinch Valves – Ideal for abrasive or slurry materials. They use a flexible sleeve that “pinches” closed to stop or regulate flow.
• Plug Valves – Work well in systems needing a simple, quick shut-off. They have a rotating plug that offers tight sealing in underground oil and gas lines.

Industrial Applications

These valves are critical in several industries. Below is how they’re typically used in real-world systems:

Forged Steel Check Valve

Crucial protection for underground pipelines. Automatically prevents backflow in wastewater and oil systems, safeguarding pumps from damage and contamination.

Explore Backflow Solution

How to Choose Underground Valves

Here are the key factors when selecting the right one for your system:

• Check the service conditions – Assess the valve’s pressure, temperature, and flow rating to your system to avoid leaks and early failure. Read our guide on how to choose the right valve.
• Match the fluid type – Corrosive and abrasive fluids require suitable valve designs and linings for a longer lifespan.
• Prioritize protection – Go for corrosion-resistant metals with proper coatings to keep underground valves in the best condition.

Reliable and Efficient Underground Valves

Strong underground valves help ensure that buried systems work safely and effectively. Choosing durable products is a good way to save time and money in the long run. For dependable valves and services, CLDG is a name you can trust, backed by ISO certification and two decades of experience.

Contact us today for more information on how we can assist you.