amemberof BCSl and FREUDENBERG RELY ON EXCELLENCE Advantages • Automatic setting of the barrier pressure via reference pressure: simple and reliable mode of operation • Safe operation even in case of pressure changes • Barrier pressure is created without any need for connection to a nitrogen supply • Housing is easy to dismantle: all parts are readily accessible for cleaning • Protective pipe for piston rod made of borosilicate glass: optimum level monitoring Features With the EagleBurgmann DRU system it is possible to supply barrier fluid to double and tandem mechanical seals for a broad range of applications. The maximum operating pressure of 63 bar applies to the housing of the pressure booster, i.e. the process/medium pressure at the connection must be lower and is conditional on the transmission ratio: DRU2063/A001 up to 57 bar DRU2063/A002 up to 42 bar Circulation in accordance with API 682 / ISO 21049: Plan 53C Standards and approvals • PED 2014/68/EU (Design and production in accordance with EU Pressure Equipment Directive) • ASME VIII, Div. 1 (Design, calculation and production) Recommended applications • Refining technology • Oil and gas industry • Chemical industry • Petrochemical industry Functional description The function of the DRU system is similar in principle to the TS system. The difference is that the barrier pressure is created by the reference pressure without any additional superimposition of nitrogen. The pressure booster is for storing and cooling the barrier fluid. Pressurization is by means of a piston in dependency on the process/medium pressure. Automatic pressure increase in accordance with the transmission ratio. eagleburgmann.com [email protected] All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications, however, means that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any guarantee for a specific case. This is subject to change.

eagleburgmann.com [email protected] A Barrier medium IN (G1/2") connection possible for SPI2063 B Barrier medium OUT (G1/2") C Process medium (G1/2") D Coolant IN (tube 15 x 1.5) E Coolant OUT (tube 15 x 1.5) F Connection for SPN (G1/8") All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications, however, means that they can serve only as guide values. We must be notified of the exact conditions of application before we can provide any guarantee for a specific case. This is subject to change.

eagleburgmann.com [email protected] Operating and installation diagram for a DRU system. The DRU pressure booster must always be installed higher than the mechanical seal. The barrier fluid flows via the return pipe into the vessel and is cooled. The exchange of fluid takes place by the thermosiphon principle or by forced circulation, e.g. with a pumping screw. Connection pipes to the seal should be designed with as little resistance as possible. All technical specifications are based on extensive tests and our many years of experience. The diversity of possible applications, however, means...

Designation Design code Integrated cooling coil Transmission ratio Volume, jacket (liters) Volume, cooling coil (liters) Allowable pressure1* Allowable process/medium pressure at connections C1* Allowable working temperature1* Working volume, MAX-MIN (liters) Cooling capacity -without cooling water (kW) 2* Cooling capacity -natural circulation (kW)2) Cooling capacity -forced circulation (kW)2) Metal parts Protective tube for piston rod Seal Net weight (approx.) Other versions on request. 1) Design data, permissible working values depend on the actual conditions of service. 2) The cooling performance...