What are the Types and Components of Flush Bottom Valves?


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Flush Bottom Valve:

In addition to these names, the flush bottom valves are also referred to as the tank valve, angle bottom valve, bottom drain valve, flush mount valve, and many more. The primary functions of flush bottom valves are to offer a shut-off for vessels that is free of dead space, storage tanks, reactors, as well as autoclaves as well as to allow drainage to semi-solid media, viscous material, slurry, and abrasive material.

A shut-off that is free of dead space can be achieved by positioning the valve seat so that it is flush with the bottom of the vessel. This prevents the accumulation of any product within the nozzle of the vessel. It is quite efficient to use flush bottom valves for the performance of fit and forget flushing.


Quarter-turn operation flush bottom valves are utilised for zero gland infiltration. This ensures flushing with zero gland retention, zero gland restriction, and low-energy quick-reaction flushing. Additionally, flushing with zero gland infiltration results in zero gland infiltration.


The creation of pudding and pockets of biological fluid inside the valve is prevented by ball-filled type valves and segmented cavities of full port size. This, in turn, prevents the growth and infection of germs inside the flush bottom valves manufactured by the most distinguished Flush Bottom Valve manufacturer in India.

Material and Size:

Starting at 15 millimetres and going all the way up to 150 millimetres, flush bottom valves are available in a variety of sizes. The production of flush bottom valves can be done with a range of materials, such as cast iron and stainless steel. The seating of the valves, on the other hand, can be constructed of Viton, Neoprene, or Teflon, depending on the process. Some of these materials include:


The input size of a traditional flush bottom valve is typically provided in a size that is one size larger than the size of the valve’s exit. An angle separates the input port and the outlet port; normally, this angle is either 45 or 65 degrees. The input port and the outlet port both have their own unique function. These two variables represent the range of possibilities for the angle that is provided to the outlet port. On the end, the contacts of the valve are flanges that have been affixed.


The flush bottom valves exported by the most popular exporter of Flush Bottom Valve in India features a flanged design, the tank bottom mounting flange requires one size up from the flush bottom valve’s standard size. It is necessary to have flanges of varying widths in order to accommodate flush-bottom valves that have a welded design. Optional additions and accessories, such as a pneumatic rotary actuator with a quarter-turn and a solenoid valve, are available to choose from. Indication for the on/off position, as well as three separate settings for selecting between coarse and fine-filling options.


The welded design is the superior choice for hydro generators because it allows for compatibility with a wide variety of tanks, including those that are flat, conical, jacketed and insulated, ellipsoidal, as well as torispherical, amongst others.

  • The design of flush bottom valves is of a small ball type that directly opens inside of a tank for the purpose of flushing one hundred per cent to the tank or reactor’s inner surface.
  • ISO 5211 was used to design the interface for the valve actuator’s mounting pad.

Types of Flush Bottom Valve

●      Disc type:

When it comes to opening and closing, disc-type valves have an advantage in that they have a shorter stroke than other types of valves. The air cylinder mode of operation is the one that is selected the vast majority of the time. When there is limited space underneath a tank due to the size of the tank, it is ideal to install rising and lowering discs because of their compact and lightweight design. These discs are appropriate for this application. The descending disc is an excellent choice for use in situations involving tanks that require an agitator.

●      Plunger Type:

Both piston valves and ram valves have the ability to ensure that full flow is accomplished thanks to the fact that the valve disc or ram travels completely out of the course of the flow rather than following the flow. These valves are a great option for use in applications requiring slurries since the interior of the valve can be cleaned when the plunger is pushed to the closed position.


The flush bottom valves manufactured and supplied by a distinguished Flush Bottom Valve supplier in Vapi have components that are identical to those of globe valves, as are the opening and closing mechanisms of both types of valves. Globe valves also have the same number of components. When the disc presses down, it results in the valve being shut off. The use of a cavity filler that is appropriate for the application is necessary in order to prevent fluid entrapment, which can result in risks, production damage, and contamination.


Valves with a completely flat bottom are the best option when you need to empty a vessel quickly or work with a product that has a high viscosity. The petrochemical industry, together with the microbiological, pharmaceutical, polymer, biotechnological, fine chemical sectors, as well as mineral processing, are among the most prevalent end users.


  • Offers a full nominal bore for all valves
  • Availability of 45°, 60°, 90° angles of body outlet
  • Free of the dead space
  • Breaking crust
  • Maintaining an airtight seal at all times with an adjustable, filled stuffing box
  • Valves have seats that can be changed out.
  • Sealing that is airtight and watertight as a result of the unique SchuF manufacturing technique
  • A connection for flushing is included as standard equipment.
  • Availability of Positive or radial seal options.


The fundamental advantage of flush bottom valves is the short stroke required for opening and closing them.

  1. The flush bottom valves have an excellent finish.
  2. The flush bottom valves are designed in such a way that it focuses on the specific application.
  3. The flush bottom valves are easy to install.
  4. There is no fear of leakage from the flush bottom valves as they are leakage-proof.
  5. The flush bottom valves have high durable standards.
  6. Helps in maintaining Water Distribution Systems


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