Pump

Reciprocating pump

Flapper and piston double-acting type

A.liquid inlet, B.liquid outlet, C.piston, D.air vessel, (to smooth out pulsating flow),  1.suction valve open, 2.suction valve closed, 3.discharge valve open, 4.discharge valve closed, 5.piston moving upwards,
A.liquid inlet,
B.liquid outlet,
C.piston,
D.air vessel, (to smooth out pulsating flow),

1.suction valve open,
2.suction valve closed,
3.discharge valve open,
4.discharge valve closed,
5.piston moving upwards,

Rotary pump

Horizontal screw pump with external bearings

 1.side suction, 2.screw shafts (or rotors) (in a connterflow arrangement), 3.external bearings (and shaft sealing by mechanical seals), 4.tump casing or housing, 5.surge chamber, 6.upward delivery, 7.spring-loaded by-pass valve, 8.spur gear assembly (for driving and driven screw shafts),
1.side suction,
2.screw shafts (or rotors) (in a connterflow arrangement),
3.external bearings (and shaft sealing by mechanical seals),
4.tump casing or housing,
5.surge chamber,
6.upward delivery,
7.spring-loaded by-pass valve,
8.spur gear assembly (for driving and driven screw shafts),

DISPLACEMENT

(self priming) not suitable for very high speeds or large capacities

RECIPROCATING PISTON OR PLUNGER  main engine drive through levers through crank mechanism feed fire bilge sanitary fresh water circulating general service ballast air  steam drive direct acting simplex and duplex simplex only  capacity duty feed up to 100 (tonnes/hr) air up to 60 (tonnes/hr) hydraulic up to 40 (tonnes/hr)  capacity duty  fire    up to 200 (tonnes/hr) bilge    up to 200 (tonnes/hr) sanitary    up to 200 (tonnes/hr) fresh water    up to 200 (tonnes/hr) circulating    up to 200 (tonnes/hr) general service    up to 200 (tonnes/hr) ballast    up to 250 (tonnes/hr) forced lubrication    up to 150 (tonnes/hr) oil fuel pressure    up to 18 (tonnes/hr) oil fuel transfer    up to 200 (tonnes/hr) cargo oil    up to 300 (tonnes/hr)   electric motor drive  feed fire bilge sanitary fresh water circulating general service ballast air   ROTARY mainly for oil or viscous fluids preferably with some lubricating qualities   ROTARY mainly for oil or viscous fluids preferably with some lubricating qualities  main engine drive steam turbine drive electric motor drive  special geometrical form gear vane screw  capacity duty forced lubrication up to 150 (tonnes/hr) oil fuel pressure up to 18 (tonnes/hr) oil fuel transfer up to 500 (tonnes/hr) fresh water up to 500 (tonnes/hr) circulating up to 500 (tonnes/hr)

POSITIVE DISPLACEMENT PUMPS

reciprocating pumps

piston pump
diaphragm pump

rotary pumps

screw pump
gear pump
eccentric helical rotor pump
lobe pump
vane pump

Centrifugal pump

diffuser type
volute type
fluid outlet

1.volute casing, 1b.casing, 2.discharge nozzle, 3.impeller, 4.vane, 5.bearing and gland, 6.shaft, 7.diffuser ring, 8.impeller eye,
1.volute casing,
1b.casing,
2.discharge nozzle,
3.impeller,
4.vane,
5.bearing and gland,
6.shaft,
7.diffuser ring,
8.impeller eye,

CENTRIFUGAL PUMPS

diffuser type pump
volute pump
hand pump
motor-driven pump
electrical motor-driven pump / electro-pump
motor pump unit
turbine-driven pump I turbo-pump

CENTRIFUGAL AND AXIAL FLOW

  must be primed by gravity supply or priming equipment external to or Integral with pump  suitable for alt duties except very small capacities or very low speeds  main engine drive turbine drive steam engine drive electric motor drive  single-stage  radial flow  diffuser  duty capacity feed up to 500 (tonnes/hr)  volute duty    capacity  feed    up to 500 (tonnes/hr  fire    up to 250 tonnes/hr  bilge    up to 400 tonnes/hr  sanitary    up to 400 (tonnes/hr  fresh water    up to 400 (tonnes/hr  circulating    up to 6500 (tonnes/hr  general service    up to 250 (tonnes/hr  ballast    up to 400 tonnes/hr  piston cooling    up to 400 (tonnes/hr  forced lubrication    up to 400 (tonnes/hr) oil fuel transferup to 400 (tonnes/hr)  cargo oil    up to 3000 tonnes/hr   multi-stage  radial flow duty    capacity  volute  feed up to 500 (tonnes/hr) extraction up to 250 (tonnes/hr)  dlffuser duty    capacity  feed up to 500 (tonnes/hr)

 

Multi-stage turbo feed pump


1.throat pressure connection,
2.venturi throat insert,
3.discharge distance piece,
4.overspeed trip bolt,
5.shaft,
6.balance piston,
7.ring section,
8.impellers,
9.suction pressure connection,
10.balance return connection,
11.suction connection,
12.suction inducer,
13,trip reset lever,
14,knock-out knob,
15,exhaust connection,
16,sentinel valve connection,
17,overspeed trip gear,
18,turbine wheel,
19.turbine shaft bolt,
20.wear down cover.
21.coupling,
22.baffle plate assembly,
23.nozzle box,

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