Gate valves are mainly used in high pressure areas to stop or start water flow but not regulate it. They are durable and cost-effective. There are two main types - rising stem valves where the stem rises when open, and non-rising stem valves which are more suitable for confined spaces. Gate valves come in different designs, sizes, and materials to suit various purposes and applications like controlling powder flow or collecting dust.

1. Why Use High Pressure Gate Valves

2. * Safe drinking water is provided to homes and offices through well
engineered system of pipes and valves which control the entire
distribution of water.
* There are different types of valves used for various purposes. Gate
valves are mainly used to open and shut the straight line flow of any
type of liquid including water.
* These valves are mainly used in high pressure areas to either stop the
flow of water or to start it. It is never used to regulate the flow of water.
* Gate valves are known for its durability, rugged construction,
performance and accuracy. These devices are in great demand due to
its cost effectiveness and easy installation.

3. Various Types of Gate Valves - Designs, Sizes And Materials
* Gate valves are available in different designs and sizes to suit different purposes.
These high pressure valves are classified according to its design and structure. There are
basically two types of gate valve which include the rising stem valve and the nourishing or
the non rising stem valve.
* Gate valves are available in different designs and sizes to suit different purposes.
These high pressure valves are classified according to its design and structure. There are
basically two types of gate valve which include the rising stem valve and the nourishing
or the non rising stem valve.

4. Rising Stem Gate Valve
In it the valve rises when the stem is rotated to open. So it is quite
easy to identify the position of the valve.
Ample amount of space is required for these types of devices. It is
not suitable for underground applications.

5. Non Rising Stem Gate Valve
This valve is ideal for all types of spaces and applications.
Different bonnets are also used for these devices. Screw in bonnet is
one of the smallest devices used for simple applications. Bolted bonnets
are essential for high pressure applications as it is considered to be safe
and efficient.
Union style bonnet is another variety of gate valve design
which is used in areas which requires regular inspection.

6. High Pressure Gate Valves With Designs
High pressure gate valves are also classified according to its designs
which include the parallel valves and the wedge valves.

7. Wedge Gate Valve
Sub divided into flexible gate type, single gate type and the
dual gate type.

8. Parallel Gate Valves
This valve can also be divided into double and single
plate types.

9. Applications of Slide Gate Valves
In the earlier days slide gate valves was used in steam engines but nowadays it is used
in automobiles for proper functioning of the engines. There are devices which are
designed specifically for cement, coal and fly ash applications. Most of these devices are
in-built with self cleaning valves. Some of the most important applications and uses are
mentioned below.
1. Control of powder flow: These devices are mainly used to control the flow of powder
which includes cement, coal and other granules such as plastic pellets.
2. Dust collection: Another important application of the slide gate valves include the dust
collection feature.
3. Shut off: These devices are mainly used to shut off the flow of products from the
outlets of the storage cans, conveyors and other types of discharge bins which are used
to store dry bulk materials.
4. Dust tight transition: Most of the devices are equipped with dust frames which
prevent the accumulation of dusts.
5. Adjustable seals: The valves are inbuilt with adjustable seals which eradicates the
need for constant seal replacements. It is easy to adjust the seals from the outer side
of the valve frames.
6. Efficient and fast: These are also known for its precise accuracy, efficiency and fast
action.
7. Suit all application: The devices are known to be versatile and suit different types of
applications.

10. Ball valve
Two elastomeric O-rings provided with backup in PTFE perform a double stem
barrier to the fluid.
The outer O-ring can be replaced with the valves under pressure.

11. Butterfly valve
Optional “trim” features allow valves to accommodate a wide range
of chemical, food and pharmaceutical (sanitary) applications.

12. Control Gate Valve
The opening or closing of control valves is usually done
automatically by electrical, hydraulic or pneumatic actuators.
Positioners are used to control the opening or closing of the actuator
based on electric, or pneumatic signals.

13. Globe Gate Valve
A globe valve is a type of valve used for regulating flow in a pipeline, consisting of a
movable disk type element and a stationary ring seat in a generally spherical body.

14. Needle Gate Valve
A needle valve is a type of valve having a small port and a
threaded, needle-shaped plunger.
It allows precise regulation of flow, although it is
generally only capable of relatively low flow rates.

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