HDP 250
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HDP 250 High Pressure Pump series Design criteria Hammelmann high pressure pumps are built to operate at the continuous maximum duty stated in the performance parameters. Just compare the crankshaft speed, average plunger speed, plunger diameter and power rating. High pressure pump Weight: approx. 1070 kg Features Power ratings up to 250 kW Vertical 5 cylinder design Wide variety of complementary ancillaries Quality and reliability Stationary unit with electric motor Stainless steel pump head free of alternating stress Length: Width: Height: Weight: Cross head piston bellows seal Main dimensions without accessories such as suction line, pressure regulator etc. All shown as right side drive. Detailed dimensional drawings and weights available on request. Stationary unit with diesel engine Length: Width: Height: Weight: 2630 mm 1570 mm 2085 mm approx. 4150 kg at 280 kW with full fuel tank Choice of application specific seal assemblies Solid ceramic or tungsten carbide plungers Choice of bronze or stainless steel suction chamber Crank section calculation by ‘Finite element method’ ensures long working life under continuous load Crankshaft supported by 3 bearings and incorporating twin helical speed reducing gears Pressurised oil lubrication system with oil cooler/filter

Technical data, series HDP 250 Performance parameters (Standard design) Note: Actual flow rates for water as pumped medium (volumetric efficiency has already been taken into account). Required power rating [kW] *Ultra high pressure Conversion table Rating 1 kW Op. Pressure 1 bar Flow rate 1l 1l Typical high pressure pump units Mean piston speed at n2 390 r.p.m. = 0,97 m/sec 465 r.p.m. = 1,16 m/sec 555 r.p.m. = 1,39 m/sec Seal ** Dynamic Packing Dynamic Packing Dynamic Packing Hammelmann Maschinenfabrik GmbH Sealing system Tungsten carbide plunger & bushing Special ceramic plunger *** /...