LPG Solutions. Pumping Technology For A Better Future. For further address details please visit:

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1 LPG Solutions For further address details please visit: E 7/211 SMH All Rights Reserved SIHI Group BV EUROPE Sterling Fluid Systems (Austria) Wien Tel. +43 () 1 68 Sterling Fluid Systems (Belgium) Groot-Bijgaarden Tel. +32 () Sterling SIHI (Bulgaria) Sofia-llinden Tel. +39 () Sterling Fluid Systems (Czech Rep.) Olomouc Tel Sterling Fluid Systems (France) Trappes Tel. +33 () Sterling SIHI (Germany) Itzehoe Tel. +49 () Sterling Fluid Systems (Hungary) Veszprem Tel. +36 () Sterling Fluid Systems (Italy) Monza, Milan Tel Sterling Fluid Systems (Netherlands) Beverwijk Tel. +31 () Sterling Fluid Systems (Poland) Warszawa Tel. +48 () /81 Sterling Fluid Systems (Romania) Bucuresti Tel. +4 () Sterling Fluid Systems (Spain) Madrid Tel Sterling Fluid Systems (Schweiz) Schaffhausen Tel. +41 () Sterling Fluid Systems (UK) Altrincham, Cheshire Tel. +44 () ASIA SIHI Pumps (Singapore) International Business Park Tel SIHI Pumps SDN BHD (Malaysia) Selangor Darul Ehsan Tel SIHI Pumps (China) Shanghai Tel SIHI Pumps & Services Ltd (Thailand) Bangkok Tel SIHI Pumps (Taiwan) Taipei Tel SIHI Pumps (Korea) Seoul Tel.: AMERICAS SIHI Pumps Limited (Canada) Guelph Ontario Tel SIHI Pumps Inc. (USA) Grand Island, New York Tel SIHI Ltda. (Chile) Quilicura, Santiago Tel SIHI do Brazil (Brazil) Campinas Tel.: SIHI Pumps (Colombia) Bogota Tel.: SIHI (Peru) Lima Tel.:

2 Primed for performance Efficient LPG pumps and systems SIHI pumps and installations for liquefied gasses that comply with the highest demands Not only do Liquefied gases vary in terms of their industrial and domestic uses, but also the way in which they are produced. Liquefied Gasses, as defined by DIN1622, include media such as propane, butane, and their derivates. However, liquefied gasses also include others such as carbon-dioxide, ammonia, and other refrigerant-based components. Storage, transportation, and pumping of such Liquefied Gasses present the key success factors to handling this media. It is vital that the difference between this set of fluids, when compared to conventional media, is fully understood when specifying equipment. In simple terms, an explosive liquid being pumped at its boiling point needs to be handled with greater care than a less complex liquid far away from its vapour pressure. Regarding the pumping equipment, there is a set of criteria that the user or specifier ought to consider as fundamental to the longterm trouble-free operation and ownership. Primarily, the most crucial point pivots around the vapour pressure of the liquefied gas. Basically, the differentiating points that are essential to a liquefied gas pump, when compared with others, include: + Low NPSH (required) + High pressure generation + Steep pressure-to-flow curve characteristics + Gas handling + Mixed phase pumping without a significant reduction in flow capacity + ATEX rated for those which are explosive Installations for suction lift operation These systems consist of a side channel pump with a special low NPSH centrifugal impeller stage, monitoring and regulation control, and are used for suction lift conditions with a maximum lift of 4 m from underground storage tanks up to 2 m 3 Series: PC. Vertical tank pumps Booster pumps installed in a chamber at the top of the underground storage tank with a maximum 6 m diameter. Series: CEB. Suction-lift (underground storage) Flooded suction Multistage pumps with a special set of low NPSH centrifugal impellers, integrated with a single gas handling and priming stage, are used for high-flow applications. With flooded suction, these units are typically used for tanker (off) loading, transfer, and bulk storage. The UEA series incorporates a priming stage (integral side channel stage) which prevents vapour locking and facilitates self-priming of the pump. Series: UEA. Side channel pumps with a special low NPSH centrifugal impeller stage have self-priming characteristics in which to accommodate entrained with ease. Series CEH is often used for LPG bottle filling and other processing needs. The SC series has been specifically designed for use in AutoGas arenas. Series: CEH, SC. Flooded Suction (above ground storage) Side channel pumps Multi-stage pumps Vertical tank pumps 2 3

3 LPG distribution scheme Performance range of LPG pumps During the various stages of distribution, pumps are required to transfer LPG in order to compensate for the pressure losses in the flow process. Under normal atmospheric conditions, liquified gases would be gaseous. Depending on the temperature at certain pressures, they can be liquefied. Industrial fuel depot 2 2 Consumer Producer Rail tanker Bulk storage tank Road tanker Distribution point Oil burners, Filling stations etc. 1 AutoGas dispenser Bottling = Pump Underground storage tank,1 1 While liquified gasses have unique fluid characteristics, they are best pumped with equipment that is designed specifically for their application. Conventionally, such liquified gasses require a flooded suction in which to give adequate NPSH, and therefore avoid problems. However, suction-lift applications from underground storage is possible by employing the SIHI design of PC-unit. Q [m 3 /hr] Suction-lift (underground storage) CEB PC Flooded Suction (above ground storage) SC UEA CEH Options & Accessoires Flexible options + Condition monitoring SIHI detect + Variable speed drive + Seal-less magnetically driven + Mechanical sealing + High end sealant systems + Dry running & cavitation protection + Distributed Control System (DCS) + 4

4 Principle of combination side channel multi-stage pumps Side channel pumps with flooded suction operation Combination side channel pumps combine very low NPSH with highly effective gas, vapour, liquid, and mixed flow pumping. Side channel pumps can tolerate % entrained vapour, on a continuous basis, with ease. Highly robust, by design, they have the ability to give decades of trouble-free service. They are also blessed with a very straight performance curve, which lends itself to pumping liquefied gasses. A combination side channel pump consists of a flow-harmonising and low NPSH centrifugal first stage (1), an intermediate stage for stabilised NPSH, followed by the side channel stage. The side channel stage consists of an inlet suction cover (2), an exit discharge cover (3), and a vane-wheel type impeller (4) located between them. Fluid is induced into the pump via the special low NPSH centrifugal impeller, and then enters the side-channel stage through its suction port (). Liquid, gas, and/or vapour is drawn into the side-channel stage because of its positive suction operation created by (a residual amount) fluid being regenerated around the side channel - which has a reducing volume (6). At the end of the circumferential side channel, any gas is compressed through the gas-exit port (8) by this residual liquid because the side channel volume is getting smaller. Liquid volume in excess of a residual amount passes through the discharge port (7) and into the next stage. During % liquid pumping, and no gas or vapour, then liquid also passes through the gas-exit port (8). Two basic types of combination side-channel pumps are available from SIHI The combination side channel, and the combination multistage. (1) Combination side-channel pumps generally employ a single centrifugal impeller together with a multiple number of side-channel stages. The purpose is a relatively high pressure to flow rate, exceptional self-priming, and low NPSH. Series: CEH, PC, and CEB. (2) Combination multistage pumps have a high number of centrifugal impeller, and generally one side-channel stage. The purpose is a relatively high flowrate, for bulk transfer, together with exceptional NPSH, and vapour handling. CEH The most common design of combination pump is of horizontal construction with ring-section multi-stages constructed with an inline axial suction branch for reduced entry losses. An oversized centrifugal impeller is mounted immediately downstream of a flow-harmonising, extended suction branch. Essentially, the flowharmonising suction branch, together with oversized centrifugal impeller, gives the low NPSH requirement while extending the hydraulic efficiency. The latter, downstream side-channel stage(s) give the vapour, gas, and mixed flow capability along with a high discharge pressure. Moreover, the side-channel design is inherently a self-priming design. Compared with other types of pump technology, the Side-channel Combination pump offers the user incredibly low suction inlet conditions. NPSH requirements of only.1m can be seen from some pump ranges for flow-rates up to 3 m 3 /hr. Primarily, this results in a simplified installation where costs are optimised. The need to excavate the pump foundation, or increase the vessel height is removed. While the side channel stages are oriented in-line with the initial centrifugal stage, this construction ensures that flow is not interrupted or reduced with partial vaporisation. SC SIHI SC pumps have the same features and benefits as the CEH pumps. These pumps are specially designed for auto gas stations. The SC pumps are very reliable and quiet. Options & Accessoires Drive + Electrical motor + PTO Sealing + Single or double mechanical seal + Seal-less magnetic coupling SC CEH,1 1 Q [m 3 /hr] Technical data Output max. 3 m 3 /h Differential pressure max. 2 bar max. 36 rpm Temperature -4 C to +12 C Casing pressure PN 4 Shaft sealing single or double mechanical seal seal-less magnetic coupling 6 7

5 Multistage pumps with flooded suction operation Vertical tank & side channel pumps for suction lift operation UEA CEB In order to facilitate higher flow rates of liquefied gasses, in the region of 2 m3/hr, more multi-stage centrifugal stages can be added. When the balance of stages becomes weighted to a greater number of centrifugal-type impellers, this is known as a Centrifugal Combination Pump. Storage tanks with diameters that, generally, do not exceed 6 m, can be fitted with vertical tank pumps that have an externally mounted motor. Quite obviously, these pumps are mounted on the top flange of the tank with the hydraulic end submerged within the liquid. The orientation is very similar to the Side-Channel combination pump mounted vertically. The flow-harmonising hydraulic suction and oversized centrifugal impeller is positioned nearest to the bottom of the inner tank by means of an extension tube. The benefit of this configuration centres upon the hydraulic being in a flooded suction condition. Centrifugal combination pumps continue to employ the benefits of the side-channel stage, which is mounted downstream of the other impellers towards the discharge. Consequently, large flows can be pumped very efficiently with the added benefit of self-priming, and gas/vapour handling. This pump design features the same design of flow-harmonising axial inlet, and specially developed first (low) NPSH stage. PC The advantage of this system lies in its simplicity. During priming, where NPSH is not readily available, the pump system has the capability to handle large quantities of vapour. Through vaporisation, heat is drawn from the liquid in the suction pipe. The result is that the fluid in the suction line has a lower vapour pressure, due to its lower temperature, than that of the liquid remaining in the tank which is at a higher temperature. Such a difference gives the suction fluid additional motive force in which to cause it to rise up and into the pump inlet. Full pumping capacity then commences. During process operation, a small partial flow is re-circulated from pump discharge and returned to the upper vapour phase of the tank. Consequently, there is a higher pressure exerted on the liquid surface which facilitates a greater motive force of liquid up the suction line and into the pump. This approach provides a very stable, and extremely long term solution to underground storage vessels. 2 1 UEA 8 max. 22 m /h max. 23 bar max. 36 rpm -4 C to +8 C PN 4 / PN 2 single or double mechanical seal 3 Technical data Output Differential pressure Temperature Casing pressure Shaft sealing 2 Output Differential pressure Temperature Casing pressure Shaft sealing 2,1 2 Technical data 1 CEB PC max. 3 m3/h max. 2 bar max. 36 rpm -4 C to +8 C PN 4 / PN 2 single or double mechanical seal seal-less magnetic coupling 1 Q [m3/hr],1 1 Q [m3/hr] 9

6 From concept to integration Your process partner Committed to engineering excellence Client Terminals Operator Workstation Wireless Production Understanding the process + years of experience + Staff trained to communicate at all levels + Deep application knowledge Solutions with minimal customer effort Testing & documentation + Factory and Site Acceptance Tests + Certified documentation + Witnessed customised testing Reduced validation and commissioning costs Totally Integrated Ethernet Profi-Bus Pump Motor Actuated Valve Switch Data Logging Thermal Control Vibration & Condition Monitoring Pump Sequencing Flow Duty/ Standby Pressure Control Temperature Monitoring Optimum product range + Unique process can be treated with simplicity + Reduced cost of design, manufacture, and documentation + Predictable site testing and commissioning Customised solutions for standard capital costs Design + Advanced design tools + Highest level of machine efficiency + Long lasting reliability Reduced energy, maintenance, and environmental costs Quality assurance + Total Quality Management + ISO9 + Rigorous health and safety culture Long term security Aftermarket a local approach + Dedication to process uptime + Locally positioned service & technical centres + Easy access to support, on a worldwide level Highest level of customer care SIHI Network Permitting our customers to save precious time and money, SIHI offers a complete digital control system. Employing the Process Field-Bus standard communication platform, PROFI-BUS, simple Function operator connectivity is possible via a SIHI control. Available with local panel and screen, the pumping system has pre-programmed logic control, monitoring, and data logging facilities. Manufacturing + Centre of excellence structure + High level of skill and competence + Ongoing people and process development Reduced integration costs Competence Centre + Centralised design, purchasing, production, compliance, and local support + De-centralised (local) quotation and project management teams Europe Germany America Grand Island / New York Asia Shanghai Reduce Life Cycle Costs T Capital Cost T Energy (Power) T Installation & Alignment T Maintenance & Operation T Down time T Environmental Cost with SIHI SIHI detect Condition based monitoring Detect wear before damage occurs + Cavitation and process turbulence + Simple to connect + LED display + Available Ex + All rotating machinery + DCS integration and continual monitoring Noise and Vibration analysis allows this compact device to diagnose the (often hidden) symptoms of longer term damage even before vibration occurs. 11

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