BLADDER TYPE SURGE VESSEL

A bladder type surge vessel, also known as a bladder expansion tank, is a pressure vessel that effectively regulates and controls fluid pressure fluctuations in various applications. Its design comprises a cylindrical metal vessel with a flexible bladder inside. This bladder separates the fluid from the compressed gas (usually air) that fills the space between the bladder and the vessel.

During normal operation, as fluid enters the surge vessel, the bladder expands and compresses the gas, ensuring a constant pressure. This mechanism helps minimize pressure surges and water hammer effects that may arise from sudden changes in flow rate within fluid systems.

FEATURES

⸺ Tank Design

The vessel body or shell, usually cylindrical in shape and made of steel material.

⸺ Normal Operation

Inside the vessel body, there is a flexible bladder (Butyl/TPU/...) or diaphragm made of elastomeric material (Butyl, TPU, ...) separates the interior of the vessel into two chambers; the upper and low

⸺ Pressure Surge Event

The lower chamber is connected to the pipeline or system undergoing pressure fluctuations or surges. When a surge or pressure fluctuation occurs in the system, during down-surge and upsurge, the water or fluid flows out/into the lower chamber of the surge vessel.

⸺ Surge Vessel Accessories

Pressure relief valves, pressure gauges, level gauges, to monitor the gas pressures/levels within the system.

No permanent regulations are required for this vessel type, with flexible selection of location. A portable compressor will be sufficient to maintain pre-charge pressure in case of necessity.