Pulsation, or pressure surges, within pump systems may hinder pump efficiency downtime. Reducing pulsation in pumping systems lowers maintenance costs and decreases the potential of unsafe working conditions.
Our Suction and Discharge Stabilizers significantly reduce harmful pulsation and pressure surges that may cause early failure of plungers, valves, piping, and critical connections.
Pulsation Dampener is an accumulator with a set pre-charge that absorbs system shocks while minimizing pulsations, pipe vibration, water hammering and pressure fluctuations. By minimizing pulsation in the system components like regulators, solenoids, sensors, etc., pumps will see decreased wear and have longer life. Pulsation dampeners are tied directly onto the discharge manifold or plumbed immediately downstream of the pump.
Fluids are practically incompressible and cannot therefore store pressure energy. The compressibility of a gas (nitrogen) is utilized in hydraulic accumulators for storing fluids. Our bladder accumulators are based on this principle. A bladder accumulator consists of a fluid section and a gas section with the bladder acting as the gas-proof screen. The fluid around the bladder is connected to the hydraulic circuit so that the bladder accumulator draws in fluid when the pressure increases and the gas is compressed. When the pressure drops, the compressed gas expands and forces the stored fluid into the circuit.
We offer a wide range of pulsation dampeners to meet the demands of any application. From completely sealed to completely re-buildable. The bladders are pre-charged with nitrogen to eliminate moisture and extend the life of the pulsation dampener
Bladder material elastomers are available in NBR (acrylonitrile butadiene rubber, Perbunan), IIR (butyl rubber), FKM (fluoro rubber, Viton®), ECO (ethylene oxide epichlorohydrin rubber).
The material used depends on the particular operating medium and temperature. When choosing the elastomer, allowances must be made for the fact that the gas can cool down to below the permitted elastomer temperature if there are adverse discharge conditions (high pressure ratio p2/p0, high discharging velocity). This can cause cold cracking in the elastomer.
For operation with chemically aggressive media, the accumulator shell can be chemically nickel-plated internally or supplied with a special plastic coating, such as Duroplast. For external corrosion protection the accumulator can be supplied with an epoxy resin finish especially for offshore applications.
The pump suction stabilizer, once coupled with the pump suction flange offers volume, dampening and separation effect that are necessary for smooth, low maintenance operation. These pump suction stabilizer acts as mini storage tank providing a full charge of liquid when the pump valves open. Low available Net Positive Suction Head (NPSH) systems usually prevent cavitation. Further, it acoustically uncouples the pump from the line eliminating acceleration head consideration due to its location. The capacitance or spring effect provided by the gas charge absorbs pulsation created by the abrupt flow change as the valves open and close. Before the entrained gas or vapor enters the pump suction manifold it is removed. Moreover the sudden pressure changes can cause gas to break out of solution and create partial cavitation’s.
The liquid filled pulsation dampeners offered by us decreases discharge pressure pulsation by around 75 percent. The type of pump and connected piping system & liquid handled, decides the actual performance of these dampeners. Further, the spherical shape of these liquid filled pulsation dampeners is counted amongst the strongest arrangement for pressure-containing service. This is a standard option up to 400 bar design pressure. Our liquid filled pulsation dampeners is capable of being permanently welded in the line, which saves flange costs and potential design flange leaks