Screw Displacement Pumps Brochure

ALBANY PUMPS Twin Screw Displacement Pumps Type SH1 Series. Internal Bearing Twin Screw Pump Use - For pumping liquids with lubricating properties. Type SH2 Series. External Bearing Twin Screw Pump Use - For pumping non-lubricating and high viscosity liquids at pressure and elevated temperature. Type SH3 Series. Internal Seal Twin Screw Pump Use - For pumping non-lubricating or light viscosity products. CONSTRUCTION Albany Twin Screw pumps are fitted with hardened timing gears and locating bearings. This ensures there is no con-tact between the screws. The ratio between outside and root diameters is designed to provide maximum shaft stiffness which eliminates body bore wear. PUMPING ACTION As the shafts rotate, the fluid is drawn to the suction ends of the casing and propelled to the central delivery area through the right and left hand scrolls. The specially designed profile of these screws provides maximum volumetric efficiency. The mechanical seals (or packed glands) are under inlet pressure. The central discharge ensures that the shafts are hydraulically balanced to eliminate any end thrust. MATERIALS Albany Twin Screw pumps are manufactured in materials best suited to the pumped liquid and to the application. Materials currently offered cast iron, cast steel, stainless steel, aluminium bronze or gunmetal, duplex alloys. Nace specification is available. DRIVE ARRANGEMENTS The pumps run at 4 pole synchronous motor speeds for normal applications. This eliminates the need for speed reducers. Smaller pumps can run at 2 pole speeds on certain duties. On applications such as oily water or very high viscosity (over 20,000 c/s) 6 or 8 pole, or even slower speeds, can be used. CAPACITY PERFORMANCE Capacity range - 10-600 M³/hr Pressures - from low pressure up to 50 bars Viscosity's - 1-60,000 centistokes SUCTION PERFORMANCE Albany Twin Screw pumps give excellent suction lift. Due to the design and gentle action of the screws the pumps require a low NPSH. NPSH required is dependant on viscosity and speed, and can be as low as 0.5M. HORIZONTAL MODELS DESIGN OPTIONS SH1 internal bearings for lubricating fluids SH2 external bearings for non-lubricating & high viscosity fluids SH3 internal seal for clean fuels of low viscosity FEATURES ? Heating options available ? API 676 compliant ? Pressures up to 20 bar ? Temperatures up to 200ºC VERTICAL MODELS DESIGN OPTIONS SV1 internal bearings for lubricating fluids SV3 internal seal for clean fluids of low viscosities FEATURES ? Vertical models save space ? With or without integral relief valve ? API 676 compliant ? Pressures up to 20 bar ? Temperatures up to 200ºC SV3 type Albany Twin Screw pumps are based on Stothert & Pitts twin screw pump design. Albany can also supply repeat pumps and spares for all Stothert & Pitt pumps. We are the only Company to hold the records, drawings and original pattern equipment. TWIN SCREW PUMPS Table of Outputs and Powers for pumps handling fluids of 1 Centistoke viscosity. (50 Hertz supply) PUMP SIZE PRESSURE Branch flange Screw type Pump Speed 2 BAR 4 BAR 6 BAR In mm OUTPUT M³/h POWER kW OUTPUT M³/h POWER kW OUTPUT M³/h POWER kW 80 3 3 80 80 A B 1450 1450 15 20 1.6 2.0 13 18 2.5 3.2 10 15 3.4 4.4 111 4 4 100 100 A B 1450 1450 39 51 4.2 5.1 35 46 6.6 8.2 31 41 9.0 11 135 6 6 150 150 A B 1450 1450 80 104 7.8 10 73 98 13 16 67 92 18 22 150 6 6 150 150 A B 1450 1450 104 136 10 13 96 128 17 21 88 120 23 29 170 8 8 200 200 A B 1450 1450 164 213 16 19 154 202 25 31 144 191 35 43 196 8 8 200 200 A B 1450 1450 238 306 23 29 224 292 38 47 210 278 52 65 210 8 8 200 200 A B 1450 1450 305 395 30 37 289 379 48 60 273 363 66 82 235 10 10 250 250 A B 1450 1450 425 539 43 52 405 520 67 83 385 501 92 113 265 12 12 300 300 A B 1450 1450 624 799 57 71 598 776 93 116 575 753 129 161 Quality Assurance to BS EN ISO 9001:2000 Certificate No. FM 20986 ALBANY ENGINEERING COMPANY LIMITED, Church Road, Lydney, GLOS GL15 5EQ U.K. Tel: +44 (0) 1594 842275 e-mail: sales@albany-pumps.co.uk Fax: +44 (0) 1594 842574 http://www.albany-pumps.co.uk APPLICATION GUIDE: Albany Twin Screw pumps are used in a wide range of industrial, marine and offshore applications. These include:- INDUSTRIAL, OIL EXPLORATION & PETROCHEMICAL Aircraft refuelling Fuel Oil Boiler firing Railcar loading Railcar discharge Crude oil gathering Lubricating Oil Vegetable Oil Bitumen Slops Chocolate Fuel handling (high & low pressure) MARINE, OFFSHORE AND DOCKS Lubricating Oil Fuel Oil, to 70 bars Cargo pumping: Crude oil & oil products Slops Stripping Oily water Sea water, bilge & ballast Fresh water Fire foam concentrate Sludge DOCUMENTATION, QA, TESTS AND PAINT Many of our customers in the Petrochemical Industry and Offshore have special requirements in these areas. Albany is Certified to ISO 9001 and has great experience in preparing all necessary documentation. We prepare CAD drawings and carry out computer assisted tests. Albany makes pumps to comply with customers data sheets and strict specifications. SERVICE AND SPARE PARTS All Albany Twin Screw pumps are fully guaranteed. Maintenance can normally be carried out without disconnecting either the suction or delivery pipework and with the elec-tric motor remaining in situ. Albany have a Spares & Service Department to cover any service work which may be required after expiry of warranty. Service contracts can be arranged which allow periodic pump inspection and reporting.