Manual Gate Valves

Manual Gate Valves are a trusted solution for on/off flow control across a wide range of industries, including water treatment, marine, oil & gas, and general industrial applications. Designed for full flow with minimal pressure drop, these valves operate through a simple handwheel mechanism that raises or lowers a gate to regulate media. This reliable manual control makes them ideal for systems where infrequent operation or secure shut-off is essential.

How Does a Gate Valve Work?

Key Operating Features:

Handwheel-operated design for manual control
Gate valves use a handwheel that rotates a threaded stem, allowing the user to manually raise or lower the internal gate. This simple mechanism makes operation easy and reliable, especially in systems that don’t require frequent adjustments.
Gate or wedge moves vertically inside the valve body
The gate or wedge is the main component that blocks or permits flow. It moves up to open the valve and down to close it, providing a straight-line flow path with minimal obstruction when fully open.
Full flow when open, with minimal restriction or pressure drop
When the gate is fully raised, it clears the flow path entirely, allowing media to pass through with minimal turbulence. This results in very low pressure loss, making gate valves highly efficient for fluid transfer.
Tight shut-off when closed to prevent leaks
Lowering the gate fully presses it against the seats, forming a tight seal that effectively stops all flow. This makes gate valves a reliable choice for isolation in critical systems.
Not suitable for flow regulation or throttling applications
Gate valves are designed for fully open or fully closed positions. Using them to regulate flow can cause damage to the gate and seat surfaces due to high-velocity media or vibration.

Frequently Asked Questions

A gate valve is a type of valve used to control the flow of a fluid by lifting a gate out of the path of the fluid. They are often used in pipelines to control the flow of liquids like oil, gas, or water.

The main types of gate valves include solid wedge, flexible wedge, and split wedge designs. Each type is suited for different applications and fluid types.

Gate valves are best used in applications where a straight flow of fluid and minimum restriction is desired. They are ideal for on/off control rather than flow regulation.

Common materials for gate valves include bronze, iron, and stainless steel each offering different advantages in terms of strength, durability, and corrosion resistance.

Sizing a gate valve involves considering factors like the type of fluid, flow rate, pressure, and the size of the pipeline. It's crucial to consult with one of our experts or refer to manufacturer guidelines.

While possible, using gate valves for throttling is not recommended as it can cause damage to the valve and lead to increased wear.

Regular maintenance of a gate valve includes periodic inspection, cleaning, and lubrication. Replace worn parts as needed and ensure proper operation to extend its lifespan.

Signs of a failing gate valve include leaks, difficulty in operating the valve, unusual noises during operation, and a visible deterioration of valve components.

Yes, gate valves can be designed for high-pressure applications, but it's essential to select a valve that meets the specific pressure requirements of your system.

The main difference lies in their design and operation. Gate valves use a lifting mechanism to control flow, while ball valves use a rotating ball with a hole through it for flow control.

Yes, gate valves can be fitted with actuators for remote or automated control, which is especially useful in large-scale industrial applications.

Gate valves offer minimal pressure drop, tight sealing, and are suitable for high-temperature and high-pressure applications, making them a preferred choice in many industrial settings.