Selection Guide
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“We make liquids flow smoothly through the pipes” Nº1 providing dampening solutions SELECTION GUIDE FOR HIDRACAR PULSATION DAMPENERS HIDRACAR has many different pulsation dampener designs that meet the requirements of many types of liquid dosing circuits. The aim of this article is to help you to choose the best HIDRACAR pulsation dampener design for your dosing pump application. In HIDRACAR, we manufacture almost all the parts of our pulsation dampeners. We are specialists in rubber vulcanization. We vulcanize our own bladders and also conform our membranes. Of course, we machine all plastic and metallic components in our pulsation dampeners. Below, we have summarized the model selection criterion of HIDRACAR standard pulsation dampeners, in order to select the most adequate and economic solution meeting the process design requirements and providing a long life service without damage in the parts in movement.

1. HIDRACAR STANDARD PULSATION DAMPENERS 1.1. BLADDER PULSATION DAMPENERS If the required design pressure is lower than 10‐20 barg, the design temperature is lower than 60‐70 ºC and the chemical is compatible with one of our rubber compounds, then the most economic and efficient solution would be our BLADDER PULSATION DAMPENERS WITH PLASTIC BODIES. If the required design pressure is greater than 20 barg and/or the design temperature is greater than 60‐70 ºC and the chemical is compatible with one of our rubber compounds, then the most economic and efficient solution would be our BLADDER...

1.2. PTFE BELLOWS PULSATION DAMPENERS If the chemical requires the use of PTFE as a separator element and the working pressure is lower than 100 barg, then our PTFE BELLOWS PULSATION DAMPENERS are the best solution. Note that because of their shape, bellows dampeners are not adequate for hygienic/sanitary purposes and for liquids containing solid suspension particles. Bellows dampeners reduce the wetted parts of the device, only the nozzle and the PTFE bellows itself are wetted elements. Volumes available: from 0,15 liters up to 15 liters. We manufacture nozzles (the wetted piece that...

1.3. PTFE MEMBRANE PULSATION DAMPENERS If the chemical requires the use of PTFE as a separation element and bellows dampeners are not suitable because any of the following reasons: ‐ Design Pressures are greater than 100 barg. ‐ The liquid contains particles ‐ There are space limitations constraints ‐ etc. then our MEMBRANE DAMPENERS are the best solution. Volumes available: from 0,2 liters up to 15 liters. Membrane type is the optimum solution for high pressure (up to 700 bars). The design of membrane dampeners is more compact and adequate when there are space limitation constraints. We...

2. HIDRACAR PULSATION DAMPENERS FOR SPECIAL APPLICATIONS We have available special designs that cover special process specifications requirements, below a guideline: 2.1. FOR VERY HIGH TEMPERATURES. If the required design temperature is greater than 240ºC, then the unique solution is our AISI‐316‐Ti BELLOWS PULSATION DAMPENER. For pre‐charge pressure below 16 barg, the solution is a single bellows dampener For pre‐charge pressure greater than 16 barg, our TRANSFER PULSATION DAMPENERS are available, which are made up of an AISI316‐Ti bellows dampener acting as a pulsation transmitter and a...

2.2. FOR SUCTION, HIGH FREQUENCY PRESSURE OSCILATIONS AND PERISTATIC PUMPS. In order to maximize the dampening efficiency for suction applications and also for high frequency pressure oscillations, our BLADDER PULSATION DAMPENERS WITH 2 CONNECTION PORTS are available. The disposition of 2 connection ports also represents a significant benefit in PERSITATTIC PUMPS where discharge piping is commonly horizontal. With the utilization of our dampeners with 2 connection ports, the extra costs for the dampener implementation in the piping are reduced. This is because they can be installed aligned...

2.3. FOR APPLICATIONS WITH HIGH VISCOSITY PRODUCTS AND ALSO FOR SUCTION LINES. In order to increase the dampening efficiency for those high viscosity fluid pumping applications, and also for suction lines, HIDRACAR considers providing a big passage hole through the dampener is crucial. For that reason, we developed our BIG BORE BLADDER DAMPENERS. In these dampeners, the passage hole provided is greater than in our standard dampeners. The passage hole section provided is approximately 2 times larger (the passage section is 4 times larger) than the one provided in the standard bladder...

2.4. FOR VARIABLE PRESSURE APPLICATIONS AN AOD PUMPS. For low pressure applications, and for applications in which the pressure may vary, we designed our ACTIVE DAMPENER. The active dampener is a PTFE BELLOWS DAMPENER or MEMBRANE DAMPENER where the bellows’ movement is limited thanks to the action of a special active valve. The dampener’s pre‐charge is automatically regulated in function of the liquid working pressure. We have it available in 3 sizes for bellows type: F015(1,5) – F030(2,6) – F060(5,6) (liters) We have it available in3 sizes for membrane type: M012(1,1) – M030(2,5) – M060(5)...

2.5. FOR APPLICATIONS WHERE THE FLUID HAS TO BE HEATED OR REFRIGERATED. For those applications where the pumped fluid requires heating or refrigerating in order to maintain its viscosity properties, we have available HEATING JACKETS. All HIDRACAR pulsation dampeners (bladder, membrane and bellows type) can incorporate heating jackets. If the installation of heating liquid is not available in the process, we can also provide the dam

3. HIDRACAR HYGIENIC/SANITARY PULSATION DAMPENERS In HIDRACAR we have developed different designs for food/beverage and pharmaceutical industries. We have 2 options available: 3.1. IN‐LINE DAMPENERS. It is a corners free design which is suitable for CLEAN IN PLACE processes (CIP and SIP). The dampener has 2 connection ports and is made in AISI316L. The disposition of the dampener is aligned with the piping. Wetted AISI‐316L parts are internally polished till 0,8 microns. The dampener has 2 FDA rubber hoses and a breakage indicator. In case of hose rupture, a signal is evidenced and the 2nd...