vertical-multistage-centrifugal-pumps

A centrifugal pump with a single impeller that can develop a differential pressure of more than 150 psid between the suction and the discharge is difficult and costly to design and construct. A more economical approach to developing high pressures with a single centrifugal pump is to include multiple impellers on a common shaft within the same pump casing. Internal channels in the pump casing route the discharge of one impeller to the suction of another impeller.

All Pumps stock, supply and service a wide range of vertical multistage centrifugal pumps. The most popular brand is Javelin Pumps, which is manufactured by All Pumps.

Check out our range online | ThePumpShop.com

Vertical Multistage Centrifugal Pumps Manufacturers

Javelin Pumps

The JV, JVI and JVN series are a non-self priming vertical multistage centrifugal pumps of inline design, flanged or with victaulic coupling, equally sized suction and discharge ports, stage construction with stainless steel impellers, chambers and pressure casing.

Pump stub shaft and motor shaft of the IEC-standard motor are directly closed coupled. All pumps are equipped with a cartridge type mechanical seal for easy maintenance. JV, JVI and JVN pumps have different pump sizes and various numbers of stages to provide the flow and the pressure required.

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javelin-vertical-multistage-pump-brochure

Overview

Performance Scope

vertical-multistage-pumps-graph

Applications

Water supply and pressure boosting: Pressure boosting in buildings, hotels, residential complexes, pressure booster stations, supply of water networks, pressure boosting for industrial water supply. Light industry: Washing and cleaning systems, car washing facilities fire fighting systems, process water systems, machine tools (cooling lubricants). Heating, ventilation and air-conditioning: boilers, induction heating, heat exchangers, refrigerators, cooling towers and systems, temperature control systems. Irrigation and agriculture: greenhouses, sprinkler irrigation, flood irrigation. Water Treatment: Water softeners and demineralization, reverse osmosis systems, distillation systems, filtration, ultra-filtration system.

Pump

The JV,JVI and JVN pumps are non-self priming vertical multistage pump of inline design, threaded, flanged or with victaulic coupling with equally sized suction and discharge ports. Stage construction with stainless steel impellers, chambers and pressure casing. Pump shaft & motor shaft of the IEC-standard motor are directly close coupled. All pumps are equipped with a cartridge type mechanical seal for easy maintenance. JV, JVI and JVN pumps have different pump sizes and various number of stages to provide the flow and the pressure required.

Electric Motors

Squirrel cage, aluminium or cast iron casing up to 45 kW, totally enclosed, fan-cooled, 2-pole standard motor.
Enclosed class: IP55
Insulation class: F
Standard voltage:
P2:0.37 – 7.5 kW : 3 x 220 – 240V/380 – 415 V
P2: From 11 kW 3 x 380 – 415

The motors have efficiency values that fall within the range referred to as MEPS2
Ambient temperature: Max. + 50°C

Definition Of Model

vertical-multistage-pumps-model-definition

Product Data

RangeJV, JVI, JVN
13510152032456490
50Hz
Nominal Flow (m3/h)13510152032456490
Flow Range (m3/h)0.7-2.41.2-4.52.5-8.55-138.5-23.510.5-2915-4022-5830-8545-120
Max. pressure (bar)21.5232421.52324.327.53321.820
Fluid Temperature (ºC)-15 to +120
Motor Power (kW)0.37-2.20.37-30.37-5.50.37-7.51.1-151.1-18.51.5-303-454-455.5-45
Version
JV
Cast Iron and Stainless Steel
EN1.4301/AISI304
..........
JVI
Stainless Steel EN 1.4301/AISI304
..........
JVN
Stainless Steel EN1.4401/AISI 316
..........
Motor
Main Connection 1 ~ (V/Hz)
(Permissible voltage tolerance
±10%)
220-240 V 50 Hz
Main Connection 3 (V/Hz)
(Permissible Voltage tolerance
±10%)
0.37-7.5 kW 220-240/380-415 V 50 Hz
From 11 kW 380-415 V 50 Hz
Insulation ClassF
Protection ClassIP 55
Ambient Temperature50°C
JV Pipe Connection
FlangeDN 25DN 40DN 50DN 50DN 65DN 80DN 100DN 100
DN 32
JVI, JVN Pipe Connection
FlangeDN 25DN 40DN 50DN 50DN 65DN 80DN 100DN 100
DN 32
Victaulic ConnectionR 1¼R2N/AN/AN/AN/A
DN 32DN 50
SIC/SICStandard
Seals
EPDMStandard
Viton

Motor

vertical-multistage-centifugal-pumps-mechanical-seals
Motor TypeNominal Current in [A]
HPkWPoleFlangeFrame1˜240 V3 ˜240 V3 ˜415 V
0.50.372B14712.421.3
0.750.55713.52.81.7
1.00.75804.53.92.3
1.51.190S6.54.72.9
2.01.590S8.65.73.3
3.02.290L12.584.6
4.03.0100L11.46.6
5.54.0112M16.39.4
7.55.5B5132S20.812
10.07.5132M26.715.4
1511160M20
20.015.0160M25.5
2518.5160L32.4
3032180M38.2
4030180L50.4
5037200L65.6
6045200L79.2

MECHANICAL SEALS

Standard Cartridge type mechanical seal made of Silicon Carbide/Silicon Carbide/ EPDM or Viton. Based on the type of application, alternative materials are available for the seal and the elastomers. The cartridge type mechanical seal can be replaced in minutes without special tools and without dismantling the pump.

LIST OF MATERIALS

Q: Silicon carbideE: EPDM
U: Tungsten carbideV: Viton
B: Carbon

TYPE OF SEAL

Seal TypeJV 1-90JVI 1-90JVN1-90
Mechanical Seals
S : Cartridge Seal...
QQ...
UUOptionalOptionalOptional
UBOptionalOptionalOptional
Seals
E...
V...

Sectional Drawing

vertical-multistage-centrifugal-pumps-sectional-drawing
POSNameMaterialJV 1,3,5,10,15,
20,32,45,64,90
JVI 1,3,5,10,15,
20,32,45,64,90
JVN 1,3,5,10,15,
20,32,45,64,90
StandardStandardStandard
EN/DINAISI/ASTMEN/DINAISI/ASTMEN/DINAISI/ASTM
36Pump HeadCast IronEN-GJL-200ASTM 25BENGJS-450-10ASTM 70-50-051,4401ASTM 70-50-05
56Pump Head OverStainless SteelN/A1,4301AISI 3041,4401AISI 316
18ImpellerStainless Steel1,4301AISI 3041,4301AISI 3041,4401AISI 316
37ShaftStainless Steel1,4057AISI 4311,4357AISI 4311,4401AISI 316
48Outer SleeveStainless Steel1,4301AISI 3041,4301AISI 3041,4401AISI 316
82O-Ring for Outer
Sleeve
EPDMStandard
12ChamberStainless Steel1,4301AISI 3041,4301AISI 3041,4401AISI 316
24Neck RingPTFEStandard
59BaseCast IronEN-GJL-200ASTM 25BN/A
BaseStainless SteelN/A1,4301AISI 3041,4401AISI 316
62Base PlateCast IronN/AEN-GJL-200ASTM 25BEN-GJL-200ASTM 25B
44CouplingFe-Cu-CSINT C11MPIF FC0525SINT C11MPIFI FC0525SINT C11MPIF FC0525
57Mechanical SealCartridge type

*Dimensions may change at any time without notice, please contact your All Pumps representative for confirmation.

Maximum Operating & Inlet Pressure

StagesMinimum Operating PressureStagesMaximum Inlet Pressure
JV, JVI, JVN 1
2-3625 BAR2 – 3610 BAR
JV, JVI, JVN 3
2-3625 BAR2 – 2910 BAR
31 – 3615 BAR
JV, JVI, JVN 5
2-3625 BAR2 – 1610 BAR
18 – 3615 BAR
JV, JVI, JVN 10
1-1616 BAR1 – 68 BAR
17-2225 BAR7 – 2210 BAR
JV, JVI, JVN 15
1-1016 BAR1 – 68 BAR
12-1725 BAR4 – 1710 BAR
JV, JVI, JVN 20
1-1016 BAR1 – 38 BAR
12-1712 BAR4 – 1710 BAR
JV, JVI, JVN 32
(1-1) – 716 BAR(1-1) – 44 BAR
(8-2) – 1430 BAR(5-2) – 1010 BAR
(11-1) – 1415 BAR
JV, JVI, JVN 45
(1-1) – 516 BAR(1-1) – 24 BAR
(6-2) – 1130 BAR(3-2) – 510 BAR
(12-2) – (13-2)33 BAR(6-2) – (12-2)15 BAR
JV, JVI, JVN 64
(1-1) – 516 BAR(1-1) – (2-2)4 BAR
(6-2) – (8-1)30 BAR(2-1) – (4-2)10 BAR
(4-1) – (8-1)15 BAR
JV, JVI, JVN 90
(1-1) – 416 BAR(1-1) – 14 BAR
(5-2) – 630 BAR(2-1) – (3-2)10 BAR
3 – 615 BAR

Rule to follow: The inlet pressure + pressure against a closed valve < Max Operating Pressure

Performance Curves

vertical-multistage-centrifugal-pumps-performance-curves

Conditions for the performance curves:

  1. All the performance curves are based on the measured values of a motor 3x380V ~ 415V at a constant speed of 2900 rpm.
  2. Curve tolerance in conformity with ISO9906, Appendix A.
  3. Measurement is done with 20°C air-free water, kinematic viscosity of 1mm²/sec.
  4. The operation of pump shall refer to the performance region indicatied by the thickened curve to prevent overheating due to too small flow rate or overload of motor due to too large flow rate.

Minimum Inlet Pressure

MINIMUM INLET PRESSURE NPSH

vertical-multistage-centrifugal-pumps-inlet-pressure-drawing

If the pressure in pump is lower than the vapour pressure used to convey liquid, cavitation will occur. To avoid cavitation, a minimum pressure at the inlet side of the pump shall e guaranteed. The maximum suction lift can be calculated with following formula:

H = Pb x 10.2 – NPSH – Hf – Hv – Hs

Pb = atmosphere pressure [bar] (can be set as 1 bar) In a closed system, Pb means system pressure [bar] NPSH = Net positive suction head [m], it can be read out from the point of possible Max. Flow rate shown on NSPH curve:

Hf = Pipeline loss at the inlet [m]
Hv = Steam pressure [m]
Hs = Safety margin Minimum 0.5 delivery head

If calculated result H is positive, the pump may run under he Max suction lift H. In case the case the calculated result H is negative, a delivery head of min. inlet pressure is necessary.

OPERATION IN PARALLEL

vertical-multistage-centrifugal-pumps-operation-graph

Connecting several pumps in a parallel running mode will benefit the reliability of the system compared to a single pump system.

Application to different working states required by a variable flow system.

Increasing the availability of water supply if a pump fails; only a part of the system flow is affected.

Pumped Liquids

JV, JVI, JVN

pumps can handle a wide variety of liquids, each with its own characteristic

 

JV,JVI

Non-corrosive liquids. For fluids transfer, circulation and pressure boosting of cold or hot clean water.

 

JVN

  • Industrial Liquids
  • Light Acids

The fluids covered in the list are not complete. Data on the application of different pump materials when handling any of the listed fluids are considered to be the best choices. However the table is intended as a general guide only, and cannot replace actual testing of the pumped fluids and pump materials under specific conditions. When choosing the pump version, sufficient attention should be given to the flow medium, such as density, solidification point, viscosity as well as ex-protection requirements. The limits of applicability of the pumps, based on pressure and temperature must also be considered.

Pumped FluidFluid Concentration TemperatureJVIJVN
EPDMVITONEPDMVITON
Acetic acid anhydride25°C.
Alkaline cleaner.
Aluminium sulphate10%, 25°C.
Ammonia water (A. hydroxide)20%, 40°C.
Ammonia hydrogen carbonate10%, 40°C..
Benzoic acid10%, 90°C.
Boric acidUnsaturated solution, 60°C.
Butanol60°C.
Calcium acetate30%, 50°C.
Calcium hydroxideSaturated solution, 50°C.
Chromic acid1%, 20°C.
Condensate90°C.
Cooper sulphateUnsaturated solution, 60°C.
Delonic (fully desalinated water)50°C.
Ethanol100%, 20°C.
Ethylne glycol / Diethylene glycol40%, 70°C....
Fixer25°C.
Formic avid5%, 20°C.
Fruit juice50°C.
Glycerine50%, 50°C.
Heating oil (Light)..
Hydraulic oil10%, 20°C.
Isopropanol.
Lactic acid10%, 20°C.
Linoleic acid100%, 20°C.
Linseed60°C.
Liqueur60°C.
Maize oil80°C.
Maleic acid50%. 50°C.
Methanol100%, 20°C.
Motor oil100%, 80°C.
Oil-water-mixture100°C.
Oxallic acid1%, 20°C.
Peanut oil100%, 80°C.
Phosphoric acid20%, 20°C.
Polyglycols90°C..
Polyethylene glycols40%, 70°C.
Potassium carbonate10%, 60°C.
Potassium hydrogen carbonate10%, 60°C.
Potassium permanganate5%, 20°C.
Potassium sulphateUnsaturated solution, 80°C.
Rapessed oil100%, 80°C.
Solicon oil100%.
Sodium carbonate10%, 60°C.
Sodium hydroxide25%, 50°C.
Sodium nitrateUnsaturated solution, 80°C.
Sodium phosphate5%, 100°C.
Sodium sulphate10%, 60°C.
Sulphuric acid5%, 25°C.
Water
Swimming pool water35°C..
Delonic50°C.
Distilled Water50°C.
Decarbonized water.
Soft Water.
Heating Water.
Boiler Water.
Pure Water.
Rinsing Water..