LPQ pump
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Std Line Product Description Flow volume: 1450 - 8100 l/min Max differential pressure: 16 bar Applications: Circulation, lubrication and transfer

1. Applications 1.1 Functionality The LPQ pumps are used for a number of different fluids: Lubrication oil, fuel oil, vegetable oil, hydraulic oil and other hydraulic fluids, glycol, polymers, emulsions and any non-aggressive fluid with sufficient lubricating properties. If requested, the LPQ pump may be certified according to any of following classification societies: DNV, BV, LRS, ABS, RS, GL, RINA, KR, NK, RMR or CCS. 1.2 Applications Typical applications are: - Lubrication and cooling of diesel engines - Lubrication of steam and hydro turbines - Transfer onboard ships, in oil factories,...

2. Pump model code L P Q Pump series LPQ Size Power rotor diameter [mm] 100, 110, 125, 140 J and L = Low lead N = Normal lead P = High lead Generation Design generation 1 Material in pump body I = Cast iron N = Nodular cast iron Shaft seal design R = Carbon/Silicon Carbide with elastomers in Nitrile T = Silicon Carbide/Silicon Carbide with elastomers in Viton Mounting Y = Foot for vertical mounting (standard) P = Internal pressure relief valve with spring for max. 16 bar Special design Code group omitted for standard design (A-number)

3. Technical Data 3.1 Pressure Information Pressure relief valve The pump is equipped with an integral pressure relief valve with internal return, limiting the differential pressure across the pump and protecting the pump, should the discharge line be blocked. The valve is adjustable for different opening pressures. The value of the pressure limit can be set at the factory and should be adjusted at installation (see Installation & Start-up instruction for low-pressure pumps). The maximum pressure accumulation varies with pump size, speed and viscosity, but will normally not exceed 4 bar....

3. Technical Data 3.3 Sound level Typical pump sound levels refer to free field conditions at a distance of 1 m from the pump. Noise of driver excluded in the quoted figures. The sound levels are measured at a discharge pressure of 4 bar, speed 1450 rpm and viscosity 37 cSt. Size 100 110 125 140 Sound level dB [A] 74 76 78 84 3.5 Fluid viscosity 2 – 800 cSt. Viscosity up to 5000 cSt after approval from IMO AB. -20 – +90 °C for all types of seal and material.

The pump is fitted with internal ball bearing which continuously is being greased by the hand- ling media. Cast iron Cast iron LPQNR Nodular cast LPQNT Nodular cast Structural Structural Carbon/Silicon Nitrile steel steel Carbide Structural Structural Silicon Carbide/ Viton steel steel Silicon Carbide Structural Structural Carbon/Silicon Nitrile steel steel Carbide Structural Structural Silicon Carbide/ Viton steel steel Silicon Carbide

5. Performance Guide Typical performance values at 5 bar Flow calculated at 26 cSt, power at 260 cSt.

Drawing remarks: (1) Applicable for size 140 Washer Cup spring Screw Screw Washer Screw Washer Plug T-ring Drain plug T-ring Top cover O-ring Shaft seal Seal cover O-ring Screw Washer Deaeration plug T-ring Ball Complete power rotor Screw Key Ball bearing Locking washer Bearing nut Idler rotor Sleeve Sleeve Plug Guide pin Screw Washer Screw Washer Pump body Screw Tuning cover Spindle Tuning piston O-ring Spring Foot O-ring Valve cover O-ring O-ring Valve spindle Support ring Retaining ring Washer Washer Complete regulating nut Pin Valve piston Valve spring Damping bush Spring Distance...

Drawing remarks (1) Deaeration (2) Drain. ISO G3/8 (3) Control for relief valve (4) Gauge connection. ISO G3/8 (5) Space for dismantling relief valve (6) Controls for “Tuning” (7) Drain. ISO G3/4 (8)Tolerances ISO j6 (9)Tolerances ISO h7 Notes: - Dimensions in mm - Counter flange for Outlet is according to DIN2633/ND16 - Counter flange for Inlet is according to DIN2632/ND10 - Weight is an approximate value

9. Pump Unit dimensions

9. Pump Unit dimensions

10. Accessories A bare shaft pump (Fig. 1) can be ordered with the accessories in fig. 2-5. Fig. 2 Two sets of counter flanges Fig. 3 Connecting frame Fig. 1 Bare shaft pump Spare parts for these pumps are easily available from stock. For detailed information and know-how about service, see the Maintenance & Service Instruction for LPQ pumps or contact IMO AB.

12 IMO Tuning® . The tuning® valves, which are standard on the LPQ series, make it possible to pump oil containing free air, with a minimum of disturbing vibration noise. Low volume lube oil systems and additives that prolong deaeration time are the main reasons for having an excessive amount of free air in the oil. Free air is the main source of vibration and noise in pump systems as the air entrained oil is compressible and air bubbles expands and decreases in size very rapidly. By throttling the tuning® valve, the correct amount of fluid, depending on air content and pressure, is fed...

IMO AB: P.O. Box 42090, SE 126 14 Stockholm, Sweden. Telephone: +46 8 50 622 800 For latest updates, check: www.imo.se