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Bladder Surge Control System

PULSCO’s Hydropneumatic Bladder Surge Control System is designed for control of damaging shock waves and pressure transients in any pipeline system.

The Bladder System provides superior surge protection for industries processing potable, raw, wastewater and hydrocarbons. The advantage of this system is the physical separation between the water and compressed air which eliminates the need for level controls. These surge systems increase the life of your system and save the cost of electro-energy to drive the large pumps.

Bladder Surge and Pressure Control System - ExternalBladder Surge and Pressure Control System - Internal

PULSCO’s Hydropneumatic Bladder Surge Control System designs are developed from a proprietary program developed especially for surge control analysis to model the fluid system and offer a low cost alternative for small water system application. From this analysis, the correct surge tank and components can be sized and determined. The result is a complete and accurate account of system requirements and a reliable solution design for any transient flow problem.

The tank volume and design pressure is determined by the system’s requirements and horizontal or vertical arrangements are possible with capacity ranging from 120 to 20,000 gallons, or to customer specification. The bladder is a heavy Elastomer which is chosen specifically for the application: potable water, raw water or hydrocarbons.

An optional PULSCO Bladder Failure Alarm provides local and remote alarm indication for a ruptured bladder.

The tank is designed, built and certified to ASME Sec. VIII, Div. 1 requirements.

Bladder Surge Control System Operation

The Bladder Surge Control System controls the energy and thus minimizes transient pressure from the shock waves. The system is pre-charged to a calculated pressure that will resupply the system with water after a pump station shut-down or start-up procedure. Either the bladder will be charged for waste water type applications or the tank will be charged for potable water applications. Complete protection of the fluid system may require multiple bladder surge control systems depending on the allowable space.

The principal components of the system are the ASME tank, bladder, safety valve, pressure gauge assembly and air charging valves.

Without vs With Surge Tank After

Bladder Surge Control System Components

Pressure Vessel
Pressure Relief Valve
Preinstalled Bladder, NSF
Antiextrusion Screen
Stainless Steel NPT Connections

Magnetic Level Indicator
1 inch stainless steel local visual indication recommended for ease of precharge

Differential Pressure Transmitter
Transmitter provides local and remote level indication

Pressure Gauge
2.5 inch dial pressure gauge, liquid filled

Pressure Transmitter
Transmitter provides local and remote pressure indication

Skypark 730
Two-analog and four-digital outputs NEMA 4 with 7 inch HMI touch screen interface
Ethernet TCP/IP communication standard

Bladder Monitoring Device
Provides continuous, real-time, safe monitoring of the bladder’s integrity

Skypark 730 and complete level control assembly is delivered prepiped and wired inside the NEMA 12 enclosure
Default Color: Gray

Bladder Surge Control Tanks are compatible with…