If the maintenance interval of your SCHROEDAHL pump protection system is coming close, you can specifically prepare yourself for this task before dismantling the system. Step-by-step you can follow how to give your system an efficient and sustainable operability check and you will see:
- which parts define your pump protection system,
- how to disassemble and then reassemble them correctly,
- what are some of the potential problems that may arise and
- how to solve them
Properties such as functionality, places of operation, valve specifications and the delimitations to each other, clearly indicate the valve that best meets your needs
The SUL, our evergreen valve in the lower nominal pressure range up to 63 bar with a pressure difference of up to 40 bar.
The SUL is used in chemical process plants, for fire extinguishing pumps and also in power plants of all kinds where large volume flows are part of the day-to-day business.
It’s simple, solid design makes the SUL virtually indestructible.
But the conical shape of the main check valve used in the TDM combined with the multi-stage vortex plug in the bypass enables the TDM to handle a pressure difference five times greater than the TDL.
How does the TDM work?
The delivery flow brings the non-return check valve or main check valve into the calculated vertical position.
The non-return check valve transmits this movement to the red control lever of the Automatic Recirculation Valve bypass.
This moves the orange multi-stage vortex plug in the vortex bushing and opens or closes the bypass.
The design of the vortex plug / vortex bushing reduces the modulating pressure in the bypass system.
The following animation shows how this works using the integrated characteristic curve.
Our animation assumes a minimum flow of 30%.
The valve switch point is marked in red on the characteristic curve.
When it is reached, the valve closes the bypass and no medium flows into the safety flow chamber.
A downstream feed water control valve regulates the flow rate depending on the partial load or full load requirement.
The switch point is defined according to your requirements, and 50 years of Schroedahl competence are used to create a robust valve design.
The TDM is produced from high-quality carbon steel, stainless steel, low-temperature steel and duplex steel
The result is a valve that is flexible and yet suitable for robust applications.
Media at temperatures of between - 45 degrees and + 230 degrees Celsius can be processed without problem.
If the maintenance interval of your SCHROEDAHL pump protection system is coming close, you can specifically prepare yourself for this task before dismantling the system. Step-by-step you can follow how to give your system an efficient and sustainable operability check and you will see:
- which parts define your pump protection system,
- how to disassemble and then reassemble them correctly,
- what are some of the potential problems that may arise and
- how to solve them
Properties such as functionality, places of operation, valve specifications and the delimitations to each other, clearly indicate the valve that best meets your needs
The SUL, our evergreen valve in the lower nominal pressure range up to 63 bar with a pressure difference of up to 40 bar.
The SUL is used in chemical process plants, for fire extinguishing pumps and also in power plants of all kinds where large volume flows are part of the day-to-day business.
It’s simple, solid design makes the SUL virtually indestructible.
But the conical shape of the main check valve used in the TDM combined with the multi-stage vortex plug in the bypass enables the TDM to handle a pressure difference five times greater than the TDL.
How does the TDM work?
The delivery flow brings the non-return check valve or main check valve into the calculated vertical position.
The non-return check valve transmits this movement to the red control lever of the Automatic Recirculation Valve bypass.
This moves the orange multi-stage vortex plug in the vortex bushing and opens or closes the bypass.
The design of the vortex plug / vortex bushing reduces the modulating pressure in the bypass system.
The following animation shows how this works using the integrated characteristic curve.
Our animation assumes a minimum flow of 30%.
The valve switch point is marked in red on the characteristic curve.
When it is reached, the valve closes the bypass and no medium flows into the safety flow chamber.
A downstream feed water control valve regulates the flow rate depending on the partial load or full load requirement.
The switch point is defined according to your requirements, and 50 years of Schroedahl competence are used to create a robust valve design.
The TDM is produced from high-quality carbon steel, stainless steel, low-temperature steel and duplex steel
The result is a valve that is flexible and yet suitable for robust applications.
Media at temperatures of between - 45 degrees and + 230 degrees Celsius can be processed without problem.
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