Triple acting mechanical seals feature two seal chambers. They are especially designed for demanding processes requiring a high degree of operational safety. They can be used for extreme pressure applications or for sealing extremely toxic or explosive products.
Product Details
The characteristic feature of a triple-acting mechanical seal are its two seal chambers. Triple-acting mechanical seals can be used in a number of applications. The mechanical seal can be operated as a double-acting seal and the upper seal chamber acts as an unpressurized emergency seal.
The mechanical seal can also be operated with a pressure splitter which uses a specially designed pressure compensator that maintains the pressure in the upper seal chamber at half the value of that in the lower chamber. This enables the vessel to be operated at twice the pressure compared to a double-acting mechanical seal because the pressure is distributed over two seals.
For vessel pressures up to 200 bar, triple-acting mechanical seals are equipped with special supply systems which continuously replenish the seal liquid lost during operation.
Triple-Acting Mechanical Seal ESD66H
Function and application
Triple-acting mechanical seal liquid lubricated for extreme pressure applications
Third pair of seal rings forms a second seal liquid chamber
A pressure splitting device can be fitted to significantly relieve the load on the seal rings
Design for demanding processes with a high degree of reliability
The high pressure seal is suitable for extremely toxic and explosive products
Advantages
Function in emergency situations: if one pair of seal rings fails, the seal operates as a double-acting mechanical seal
An extended life time and less wear
Lower leakage rates
Working limits
Operating pressure: vacuum…200 bar (abs.)
Vessel temperature: -50…+400°C
Shaft size: 40…220 mm
Sliding speed: 0…3 m/s
The EKATO ESD ESD66H is most suitable for
Speciality chemicals
Hydrometallurgy
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What does “Number of sealing faces” mean?
Single-acting mechanical seals These seals have one sealing surface and only seal in one direction. They are generally simpler in design and are commonly used in applications where pressure is applied from only one side.
Double-acting mechanical seals These seals have two sealing surfaces and can seal in both directions. They are ideal for applications where pressure may come from both sides or where a higher sealing performance is required.
Triple-acting mechanical seals These are less common and used in specialized applications that require a more complex sealing setup. They offer additional sealing surfaces or mechanisms to ensure reliable sealing even in highly demanding environments.
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