Olaer introduces Charlatte

Olaer has over 70 years experience in selling high pressure （up to 700 bar）, small volume, bladder type pressure vessels used for Storage, Valve Closure and emergency standby applications. We have now complimented our range with a new range of bladder accumulators design for large volume – low pressure surge applications. This type of low pressure units is designed for water applications. This new range is also complimented by a waste water range.

A primary use for this range of units is protection of pipe networks. Typically this means surge. Surge is a liquid pressure transient that can occur due to pump shutdown, pump start-up and sudden valve actuations. Surges can produce fatigue and catastrophic failure of the pipes. For more detailed information on surge please refer to this document.

Product: Large Bladder Vessels up to 120,000 Ltr

Main Advantages:

• Low Maintenance

• No need for a compressor

• Self contained

• No Corrosion - Fluid is contained in a Butyl Bladder

• No Need for Electricity
 

Bladder accumulators have the same mission with regard to surge control as the traditional compressor vessel. The objective of this pneumatic solution is to simplify the method of regulation.

In a similar way to a vessel controlled by compressors, a pre-charge pressure is calculated to give the required elasticity to push the water into the system following a pump shut down or power cut.

One of the major advantages with the Charlatte Surge Vessel is that you do not require a Compressor which is costly to install and maintain. Charlatte Vessels are self contained and need no power supply for them to function.

The major difference with Bladder Surge Vessel being that the liquid is contained within a rubber bladder （compatible with drinking water）. Therefore, as there is no contact between the compressed air and the wate, there is no dissolution of the air into the water. There is thus no requirement for a permanent regulation system including compressors.

Another advantage is that the potential for internal corrosion is reduced dramatically due to the fact that water is contained inside the rubber bladder and does not come into contact with the steel vessel.

Once the vessel has been commissioned and the correct precharge has been applied, the vessel will operate automatically emptying when called upon and refilling with the return waves until naturally finding its steady state balance.

Charlatte have been successfully manufacturing bladder vessels for over 30 years, ranging in volume from 8 to 120,000 litres.

Above vessels can be also used for storage and pulsation dampening applications.

The vessel can either be horizontal or vertical. It comprises of a steel vessel containing a rubber bladder made from butyl rubber, （suitable for use with drinking water） and a flanged connection pipe equipped with anti-extrusion grill.
The vessels are treated internally with food quality epoxy paint as corrosion protection and externally to client specification.

In order to verify the level the vessel it is normally equipped with a level indicator （for large vessels） as well as a manometer to verify the initial precharge pressure.

These units are now commonly used on surge systems throughout Europe and the U.S.

For information about Water Surge Vessels, download the following document: