Sluice Valve

Sluice Valve

※ Resilient wedge
※ Size Range: NPS 2 to NPS 24
※ Class Range: PN10/16/150LB
※ Design STD.: DIN 3352
※ Sluice Valve Manufacturer & Supplier


A sluice gate is a device for controlling the flow of water. These devices may be found in a variety of areas, including water treatment plants, mines, dams, rice fields, and cranberry bogs. The gates are usually constructed of wood or metal, and they open and close vertically on a frame, allowing water to flow out of or be trapped in an area.  For this, they are also identified as sluice gate valves.

A man-made canal or a redesigned natural stream that carries water is referred to as a sluice. This type of gate controls the flow of water and where it flows. This is extremely beneficial in farming and other businesses to regulate flooding and water levels.

What is Sluice Valve?

The word sluice has nothing to do with a valve. A sluice, in fact, is any water channel that has a gate at its head. A “sluice gate” is a valve that regulates the flow of water through a sluice. These valves are often employed to manage water levels and flow rates in rivers and canals, and they are designed to be sealed in one way. They’re also seen in wastewater treatment facilities.

A sluice gate is one of the various types of valves that have different names depending on the business. A vertically elevating sluice gate valve is the most popular type. This valve features a gate that raises (to allow fluid to flow) and lowers to prevent fluid from flowing ( stop the flow.) When a sluice gate is closed and the fluid is able to flow from the top of the valve, this is called a weir valve. The gates/openings of sluice gates could be circular, square, or rectangular.

Working: Sluice Valve.

The Sluice Valve and/or Gate Valve only serves to start or halt the flow. Sluice valves are utilized for slurries and gate valves are used for water delivery systems. The gate valve is opened by lifting the gate/wedge from the water flow, enabling all water to flow freely. The top end of the stem (connecting rod/shaft) contains a hand wheel or motor that lifts and lowers the gate, while the bottom end has a circular or wedge-shaped gate that blocks water flow. Because the valve has a threaded stem, it must be turned multiple times to shift from open to closed and vice versa, eliminating water hammer effects.

Gate valves open and close perpendicular to the flow line, therefore the stem of a horizontally running pipeline is vertical, and the stem of a vertically flowing pipeline is horizontal. As a result, they can’t be utilized to manage water flow or pressure since they will wear out the gate.

As sluice gates are operated by a threaded rod system that must be cleaned and lubricated on a regular basis. Hydraulic systems are frequently employed to raise and lower these gates in applications with high water pressure, such as dams, to manage the sluice gate flow. The gates are sometimes manually lifted and lowered in smaller applications, such as cranberry bogs. An electrically-driven lifting method is employed at other times.

Construction: Sluice Valve

Sluice valves are somewhat similar in construction to knife gate valves. Sluice gate valve manufacturers developed this design in which it is fitted for opening and shutting the flow path of a sluice or a canal. A gate is fitted in a guide frame and connected to a threaded stem to lift or lower the gate. These threaded stems are mainly of two types depending on the position of threads present.

sluice valve drawing
  • When the threads are present at the operators’ side, that is, in this type of sluice gates valves, the stem is directly connected to the gate and threaded at the operator’s end. While they are operated the stem can be seen rising up or down, these types of valves are known as Raising Stem Sluice valves.
  • On the other hand, when the stem is fixed at the operator’s end but threaded where it is connected with the gate; the type of valve is referred to as a Non-raising Stem Sluice valve. The stem in this valve does not rise but the gate moves up and down with the help of treads present at the gate’s end.

The sluice valve is normally the same size as the main valve. The valve is around two-thirds the size of the primary valves for bigger diameters. The valves are housed in a valve chamber with operating caps or handwheels. The valve can be opened in either a clockwise or counter-clockwise direction, as shown at the spindle’s outer end.

Types: Sluice Gate Valves.

As the use of Sluice valves is increasing, the Sluice Gate Valve manufacturers are developing different types of valves based on their use in different conditions. Some design types of sluice gate valves are:

  • Flap Sluice Gate Valve.
  • Radial Sluice Gate Valve.
  • Needle Sluice Gate Valve
  • Fan Sluice Gate Valve.

Installation and Maintenance: Sluice Gate Valve.

  • These valves can be installed in any direction, but if a big valve is to be used, it should be installed in an upright position so that the sluice valve can be operated easily.
  • Before installing the valve, verify the material of the valve body, stem, and disc.
  • It must be confirmed that the valve has not been damaged during transit or storage. Before installing the valve, inspect it for debris, corrosion, wrapping material, and dirt.
  • After that, connect and center the valve by making sure the flanges on both the pipe and the valve match. Install the bolts and tighten them evenly to ensure that the valve seals properly between the pipe.
  • Once the installation is complete, test the valve by operating it several times to ensure it is in the right position and has not moved from its original location.
  • The valve should be tested according to the sluice valve manufacturer’s instructions to ensure that it is in good operating order and can handle the working parameters without issue.

If the valve is not utilized on a regular basis, it should be operated and checked once a month to ensure there are no obstructions or wear. Before proceeding, ensure that the system pressure has been released and that the system is not under pressure. The bonnet and stem must be removed in order to check the gate. After this examination, inspect the sluice gate and guide for any damage or wear and refit/replace the parts.


The functions and applications of sluice gate valves and knife gate valves are totally different. The final conclusion is that a knife gate might be an excellent solution for in-line isolation and sludge applications. A sluice gate, on the other hand, is the finest choice for manipulating flow in a sluice or canal.

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