Self-priming Hydraulic Screw Pumps
Featured Product from jbj Techniques Limited
These screw pumps are volumetric self-priming pumps suited to handle oils and liquids with a minimum lubricating quality.
The design simplicity makes these screw pumps intrinsically reliable and efficient.
The accurate hydraulic balance and the special profile of the screw thread guarantee a continuous flow with minimum pulsations and turbulance, resulting in extremely low noise levels even at high rotational speed.
Characteristics
» Compatible with a wide range of viscosities from 1 to 12,000 cSt and above.
» Efficiently working also at very low temperatures (-20°C).
» High self-priming capacity.
» High rotation rates = minimizing the size and cost of the pump.
» Steady flow rate = maximum efficiency in heat exchange applications.
» Special design for systems with entrained air in the lubricant = minimizing the vibrations and noise caused by air.
» Minimum sensitivity to particle pollution = longest life of the pump and circuit.
» Continuous operating pressures up to 130 bar, peak 200 bar.
» Pulsation-free = maximum efficiency of filtering applications.
» Extremely quiet.
Product Options
Screw pumps: standard according to API 676, for mineral and lubricating oils also fluids with low lubricating properties (water + oil, HFC, LFO, HFO). Flows up to 5,000 litres per minute and pressure up to 130 bar (200 bar peak).
• SAE counterflanges.
• Motor pump sets: close coupled, AC or DC electric motors.
• Pre-assembled systems: with bell-housing and coupling arrangements.
• Skid mounted pumps: with or without motor but suitable for horizontal or vertical mounting.
• High efficiency Air/Oil Heat Exchangers: up to 14,000 kCal/h (16kW).
• Off-line filtration systems (filtration trolley) and complete stand alone systems, also for machine tools).
• Relief valves: Flow rate from 50 to 1,200 litres per minute and pressure up to 40 bar.
• ATEX approval for use in explosive atmospheres: ATEX Zone 0 & 1.
Fluids to be pumped
» Hydraulic oils.
» Lubricating oils.
» Diathermic oils.
» Oil-in-water emulsions (min. oil percentage 5%).
» Light and heavy fuel oils.
» Phosphoric esters.
For detailed information and technical specification documents see www.jbj.co.uk/screwpumps.html
A helpful guide to PUMP DRIVES: how-to-select-the-right-pump-drive-for-an-application-learning-the-basics