Valves are necessary in any utility systems for controlling, regulating, and directing the flow of fluids. One important type of valve is the gate valve, also known as the sluice valve.
A sluice valve uses a gate or a wedge-shaped disc to control and regulate the flow. This gate runs perpendicular to the flow of fluids into or out of the pipeline. The valve opens by lifting the gate out of the path of the fluids and enabling it to flow.
Lifting the gate or the wedge is controlled by a threaded stem (a connecting rod or a shaft). The top end of the stem has a hand-operated wheel or a motor that raises or lowers the gate, while the lower end has a circular or wedge gate to obstruct the flow. The threaded stem prevents water hammering effects, as it needs to be turned several times to go from open position to closed position.
There are two types of spindles (wheels at the top of the stem used to turn the valve on and off) used for raising the gate in a sluice valve.
The valve is contained within a valve chamber and has caps or handwheels to operate it and can be opened clockwise or anticlockwise.
The size of the sluice valve is usually the same size as the main valveup to 300-mm diameter. There are available in bigger diameters where the size of the sluice is two-third the size of the main, but subject to a minimum of 300 mm.
The simple mechanics of the sluice valve make it one of the most used valves across many industries. It is mainly used for industrial applications. You will commonly find them on process plants where they are used to manage slurries.
When in operation, these valves are either fully opened or fully closed. They are commonly used to cut off the flow of liquids and cannot be used for throttling as accuracy cannot be achieved through these valves. Besides, the high flow velocity in a partially opened valve can damage the gate, cause disk and seat surface erosion, and result in vibration and noise.
Sluice valves are often used for large pipe diameters because they are easy to use and have a simple construction than other larger valves.
We stock several sluice valve products for various applications, such as potable networks, water storage, pump stations and process water systems.
Hawle E2 Gate Valves with EN or Table E Flanges
The E2 resilient seated double flanged gate valve is drilled to EN PN16 or AS Table E.
Hawle E2 Flanged Sluice Valve
The Hawle E2 Flanged Sluice Valves have flanges available in Table D, Table E, and PN16 from DN50600
Hawle E3 Resilient Seated Gate Valve
The Hawle E3 resilient seated gate valve has been developed from the successful E2 gate valve with a few refinements to enhance performance.
Hawle E2 Flanged System Sluice Valve
The Hawle E2 Flanged System is a resilient seated valve with flange and socket for PE (PE 80/100) total restraint.
Hawle Service Valves
These service valves have multiple connection types to suit various applications.
Hawle A Valve with Flanged Ends
This is the worlds first mono-design resilient seated shut-off valve.
Hawle E2 Combi III
You will get efficient and thoughtful service from Yaxing Valve.
A flanged tee piece comprising three flanged outlets and two or three integral E2 Elypso valves.
If you need any sluice valve products or have any questions, please contact us.
Valves are very important components in utility systems. A gate valve, as the name suggests, is a type of valve that is used to control the flow of a liquid using a gate or plate. This type of valve is mainly used to completely stop or start the flow and is not used to regulate the amount of flow unless specifically designed to do so.
The best industrial valve manufacturers follow stringent standards while manufacturing these valves to ensure quality, durability, and performance. Any kind of sub-standard quality may lead to unwanted damage and economic losses. Efficiency and ease of operation are two very important factors when choosing a valve from the plethora of vales available in the market.
Sluice valve is called by gate valve, look through to know more info about them.
A gate valve is a type of isolation valve used to control the flow of fluids in an industrial system. A sluice refers to an artificial channel aided by a gate to control the flow of water. Sluice valves or industrial gate valves are mainly used for industrial purposes. Its easy and simple mechanics make it one of the most-used valves across various industries. The valve operates by simply moving or lifting up the barrier in the path of flowing liquids.
It is used along the pipe in a one-directional or bi-directional flow. When fully open, it hardly provides resistance to the flowing liquid, which is one of the major reasons why it is considered very efficient. The shape of the gate maybe be parallel, but in many cases, it is kept in a shape of a wedge. Wedge gate valves help create a better sealant when closed as it applies pressure to the sealing surface and offers better sealing performance.
A gate valve works by manual rotation of a handheld wheel, or it uses an electric or pneumatic actuator. Rotation of the wheel a number of times moves the gate up and down, which controls the flow of liquid or gas inside the valve. Opening the gate provides minimal obstruction to the flow but keeping the gate half open may cause damage as the flowing liquid or gas will exert a large amount of pressure on the plate. Instead of gate valves, globe valves can be used to regulate flow.
Although a gate valve or sluice valve is easy to operate, it consists of numerous components fixed together for it to function efficiently. This type of valve consists of the body, a gate, a seat, a bonnet, and in some cases, an actuator which automates the flow. Gate valves can be manufactured using various materials; however, stainless steel is the most preferred since the material is more resistant to changes in temperature or pressure. The various parts of a gate valve are detailed out below.
Available in a variety of designs, the gate is the main part of a gate valve. The main design aspect of it is its sealing capacity for specific applications. A gate valve can be classified as a parallel or wedge-shaped valve based on the gate type. The former can further be divided into slab gates, parallel slide gates, and parallel expanding gates.
A gate valve has two seats that ensure sealing along with the gate. These seats can be integrated within the valve body, or they can be present in the form of a seat ring. The latter is threaded or pressed into its position and then sealed and welded to the valve body. In situations where the valve is subject to higher temperatures, seat rings are preferred, as they allow for more variation in design.
The gate in a gate valve is lowered or raised when it spins on a threaded system. This can take place via a manual wheel or an actuator. An actuated gate valve can be controlled remotely. Depending on the type of step, the gate valve can be categorized into rising stem and non-rising stem valves. The former is fixed to the gate, whereas the latter is fixed to the actuator and threaded into the gate.
Bonnets are valve components that ensure the safe sealing of the passage. It is either bolted or screwed to the valve body so that it can be removed for replacement or maintenance. Based on application, various types of valve bonnets include bolt bonnets, screw-in bonnets, union bonnets, and pressure seal bonnets.
Gate valves or sluice valves have numerous applications in various industries and have diverse uses in controlling liquid, gas, and even airflow. In environmentally harsh conditions such as high-temperature or high-pressure areas in petrochemical industries, gate valves are the go-to instrument. In such conditions, the material and type of valve play an important role in the performance and efficiency of the valve.
Gate valves also find their use in fire safety systems, where a flanged gate valve is commonly used. Non-rising stem gate valves are used in ships or underground at places where vertical space is limited.
As the name suggests, parallel slide gate valves have a flat, parallel-faced gate that is fitted between two parallel seats. On the other hand, wedge gate valves have a wedge-like gate element. This has ribs on both sides and is guided into position by the slots in the gate body. These wedge guides help transfer axial loads imposed by the medium to the valve body, enable low-friction movement, and prevent the rotation of the wedge whilst moving between open-closed positions.
The primary difference between these two types of gate valves is that they are either fixed (rising) or threaded (non-rising). In rising stem gate valves, the rotating stem rises while the valve opens. However, this valve type is not preferred where the space is limited or the installation is underground.
Both of these are wedge gate valves. In metal seated valves, the wedge slides toward a groove in the gate valve body and could trap solids that the fluid may contain. Hence, resilient seated valves are preferred where tighter-shut off is required, like in water distribution systems.
In resilient seated valves, a wedge is enclosed within an elastomer which ensures a tight seal. The seating takes place between the valve body and the wedge and hence does not necessitate a groove as in the case of a metal seated gate valve. Since these valves are coated with an elastomer or a resilient material, they offer a higher degree of corrosion protection.
Sluice valves and gate valves are different names for the same type of valve. These are the most common type of industrial valves in use. As gate valves are manufactured using various materials and have numerous types, the type of valve must be selected carefully for specific applications.
Good quality and efficient valves like the ones by Dombor are a great investment as it requires minimal maintenance in the long run, which can save a lot of money. Contact Dombor Valve today for best-in-class valves.
Are you interested in learning more about Gate Valve and Sluice Valve? Contact us today to secure an expert consultation!