Movitec VCF Type Series Booklet 1798.51/4-10 Movitec VCF High-pressure In-line Pumps 50 Hz Fields of Application Movitec VCF are employed for hot water recirculation. They are installed in boiler feed circuits or other high temperature ap- plications where thermal pipe expansions may occur. Design Multi-stage, vertical (horizontal installation see page 4) high- pressure centrifugal pumps, with suction and discharge nozzles of identical nominal diameters arranged opposite to each other (in-line design). Materials Standard variants: VCF: Pump casing is made of cast iron and all other hy- draulic components are made of stainless steel AISI 304 Bearings All VCF pumps are supplied with tungsten carbide plain bearing at the hydraulic rotor. Shaft Seal Single-acting, uncooled mechanical seal in accordance with EN 12756. Drive Electric motor, 50 Hz, air-cooled, 2- and 4-pole, standard KSB motor with main dimensions to IEC. Other motor makes subject to prior consultation with KSB. Movitec VCF with PTC resistors for 3 kW and above. Variants: single-phase a.c. motor, frequency-controlled drives. Designation Movitec V CF4 -- 5 Type-series Movitec V Material variant Flange variant Pump size Number of stages Material variants: C Flange variants/connections: F = round flange Operating Data Movitec VCF Capacities Q up to 75 m 3 /h, (21 l/s) Heads H up to 228 m Operating pressures p d up to 25 bar 1 ) Operating temperatures t --15 _C to +120 _C 1 ) The sum of inlet pressure and head at zero flow point must not ex- ceed the value stated. Conformity Marks CE
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Movitec VCF
Type Series Booklet1798.51/4-10 Movitec VCF
High-pressure In-line Pumps50 Hz
Fields of ApplicationMovitec VCF are employed for hot water recirculation. Theyare installed in boiler feed circuits or other high temperature ap-plications where thermal pipe expansions may occur.
DesignMulti-stage, vertical (horizontal installation see page 4) high-pressure centrifugal pumps, with suction and dischargenozzles of identical nominal diameters arranged opposite toeach other (in-line design).
MaterialsStandard variants:VCF: Pump casing is made of cast iron and all other hy-
draulic components are made of stainless steelAISI 304
BearingsAll VCF pumps are supplied with tungsten carbide plain bearingat the hydraulic rotor.
Shaft SealSingle-acting, uncooled mechanical seal in accordance withEN 12756.
DriveElectric motor, 50 Hz, air-cooled, 2- and 4-pole, standard KSBmotor with main dimensions to IEC. Other motor makes subjectto prior consultation with KSB.Movitec VCF with PTC resistors for 3 kW and above.Variants: single-phase a.c. motor, frequency-controlled drives.
DesignationMovitec V C F 4 -- 5
Type-seriesMovitec VMaterial variantFlange variantPump sizeNumber of stages
Material variants: CFlange variants/connections: F = round flange
Operating DataMovitec VCFCapacities Q up to 75 m3/h, (21 l/s)Heads H up to 228 mOperating pressures pd up to 25 bar 1)Operating temperatures t --15 _C to +120 _C1) The sum of inlet pressure and head at zero flow point must not ex-
Please note: The indication of the material designations to ASTM / AISI is not binding.
Material Codes
Mechanical seal Description Code letter toEN 12756
Material
Spring-loaded ring U3 Tungsten carbide (CrNiMo-binder)
Seat ring B Resin-impregnated carbon graphite
Elastomer E EPDM (Ethylene Propylene rubber)
Spring G CrNiMo steel
Other metal parts G CrNiMo steel
Code number 18 U3BEGG Tungsten carbide/Carbon/EPDM (HP seal)
Pressure and Temperature LimitsTemperature ofmedium pumped t 2)
Flange variant /Connection
Material variant Max. operatingpressure ps
1)Code numberMechanical seal
– 15 _C to + 120 _C VCF = round flange 3) Movitec VCF up to 25 bar 18
1) The sum of inlet pressure and head at zero flow point must not exceed the value stated.2) Subject to application limits (see List of Media Handled)3) Drilled to EN 1092-2 PN 25
Movitec VCF
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Horizontal installation
The Movitec VCF can be installed horizontally in systemswhere the installation conditions do not allow vertical installa-tion.
Motor flange B14 (0.37 to 4.0 kW)
Motor flange B5 (5.5 and 7.5 kW)
The set for horizontal installation contains 2 stainless steelholding brackets and the required bolts.Foundation bolts must be supplied by the operator.
max. Ø 13 mm for M12
Holding bracket (pump)89-11.01
Holding bracket (motor)89-11.02
Dimensions Movitec VCF 2, 4, 10, 18, 32, 45, 65
Motor rating
[kW]
C 1)
[mm]
H
[mm]
A
[mm]
B
[mm]
Ident No.set
Movitec VCF 2, 4
0.37 -- 1.1 F2 + 47 120 100 100 47 116 958
1.5 -- 2.2 F2 + 47 120 100 100 47 116 986
3.0 -- 4.0 F2 + 39 120 100 100 47 116 959
5.5 -- 7.5 F2 -- 17 170 100 210 47 116 960
Movitec VCF 10, 18
0.55 -- 1.1 F2 + 47 140 130 130 47 116 961
1.5 -- 2.2 F2 + 47 140 130 130 47 116 987
3.0 -- 4.0 F2 + 39 140 130 130 47 116 962
5.5 -- 7.5 F2 -- 17 170 130 210 47 116 963
Movitec VCF 32, 45, 65
1.5 -- 2.2 F2 + 47 170 210 180 47 116 972
3.0 -- 4.0 F2 + 39 170 210 180 47 116 973
5.5 -- 7.5 F2 -- 17 170 210 180 47 116 9741) Height F2 based on stages, see tape series booklet Movitec VCF
pp 22
Movitec
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Design Features Movitec VCF
Universal high-pressure pumpup to 25 bar• --15 _C to 120 _C• also for chemically aggressive
media
Easy-to service, robustthree-phase motor• multi-range voltage /
frequency• type of enclosure IP 55• insulation class F• with PTC resistor for
3 kW and above
Easy-to-fit shaft of high-alloysteel with two flat faces forstrong shaft/impellerconstruction
Low noise, since the flownoise is dampened bywater-filled shroud
Highly wear-resistant andmaintenance-free plain bearing oftungsten carbide / ceramiclubricated by the medium• self-cleaning by forced flushing
Leak-free and resistantto thermal shocks• thanks to pump shroud• due to confined O-rings
High operatingreliabilityensured by torsion-proof pump shroud• no partition lines on
the outside• only 2 seal elements
Simple installationand piping layoutthanks to in-line design• insusceptible to
outside nozzleforces and moments
Space-saving vertical design
Minimum flow
0
5
10
15
20
25
30
40 50 60 70 80 90 100 110 120
Temperature [°C]
Qm
in[%
]
Movitec VCF
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CasingCast iron pump casing with suction and discharge nozzles ofidentical nominal diameters arranged opposite to each other(in-line design).
Shaft SealThe shaft seal is an uncooled, maintenance-free mechanicalseal to EN 12756.
DriveStandard for VCF:-- Electric motor, 50 Hz, air-cooled, 2- and 4-pole, standard
KSB motor with main dimensions to IEC. Other motor makessubject to prior consultation with KSB,up to 2.2 kW 220--240 V/380--420 V,3 kW and above 380--420 V/660--725 V,type of enclosure IP 55,insulation class F,up to 4 kW design V18,5.5 kW and above design V1,all motors with PTC resistor for 3 kW and above.
Approved variants:-- Explosion-proof motor II 2 G Eexd/Eexe T3/T4,
design V1/V18, make acc. to our choice.-- Motor for 500 V mains voltage, design V1/V18, make acc. to
our choice.-- Motor make acc. to customer’s choice (upon request).-- PTC thermistor for motors < 3 kW
Direction of rotation:Clockwise, seen from the drive side (see arrow indicating direc-tion of rotation on the motor stool).
InstallationVertical installation (horizontal installation see page 4)
CoatingCast iron pump casing with powder coating.Stainless steel parts without any additional protective coating.
TestsStandard:Pressure test according to EN 809.Leak test with water.
Approved variant (upon request):Hydraulic test evidenced by test report. This test is always car-ried out using the original motor.The NPSH or the suction head are not measured.Materials testingCertificate of Compliance with the Order (corresponds toEN 10204)In the certificate of compliance with the order the manufacturingor processing works confirms by way of an informal report with-out specifying test results that the delivery complies with the sti-pulations of the purchase order (certificate to 2.2 and 3.1 avail-able upon request).
Characteristic Curves 2)The characteristic curves are based on the following principles:
F Tolerances to ISO 9906, Class 2 / Annex A.
F The motors used for the measurements are standard KSBmotors 1).
F The characteristic curves were obtained with deaerated waterat a temperature of 20 _C and a density of 1.0 kg/dm3 1).
F The characteristic curves are valid for a kinematic viscosityof 1 mm2/s (1 cst) 1).
F A minimum permissible flow must be maintained to preventthe pump from overheating (see graph).
Movitec VCF Qmin in m3/h
24
1018324565
0.30.61.22.44.04.66.1
The following curve shows the minimum flow, correspondingto a percentage of the optimum flow Qopt, as a function of thetemperature of the medium pumped (flow rate at best effi-ciency point).
F Maximum pressure at the discharge nozzle:25 bar – head at zero flow point with round flange (VCF).
F NPSHThe NPSH values of the individual characteristic curves areminimum values corresponding to the cavitation limit; theyrefer to deaerated water.A safety allowance of at least 0.5 m must be added when se-lecting the pump to compensate for measuring inaccuraciesand minor manufacturing deviations. The NPSH curve re-flects mean values.
1) In case of different parameters, the performance data must be cor-rected accordingly.
2) See example on the following page.
Movitec
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Example
Power input per stageat a density of ρ = 1 kg/dm3
NPSH required. A safety allowance of 0.5 mmust be added to the NPSH value of thecharacteristic curve when selecting the system.
Recommended Spare Parts Stock for 2 Years’ Continuous Operation
Number of pumps of identical size(including stand-by pumps) --> 2 3 4 5 6 and 7 8 and 9 10 and more
Part No. Description Quantity of spare parts %
10-5 Stage casing compl. with bearing Kit
Stage casing with bearing (108.02) +
bearing sleeve (529) + impeller (230) +
spacer sleeve, short (525.01)
1 set 2 sets 3 sets 30
433 1 Mechanical seal 433
2 O-rings 412.01
1 O-ring 412.05 (only for cartridge seal)
1 O-ring 412.06 (only for cartridge seal)
1 set 2 sets 3 sets 30
List of Media HandledThe data refer to the materials’ chemical resistance. Relevant regulations / standards for pump applications have to be compliedwith.The actual operating conditions must always be checked (concentration, temperature, solids content).The penetration of air into the system must be avoided by all means.If the operating conditions differ from the data given (e.g. mixed products) or if the media are not included in the table below, pleasecontact KSB.
Basic data:-- Room temperature means a temperature between +10 °C and + 30 °C.-- Temperature ranges:
D The reference temperature is 20 °C.D In the case of temperatures <0 °C, please contact KSB.D If the temperature exceeds > 50 °C, check and observe the fluid’s vapour pressure.D Max. temperature = 120 °C, unless indicated otherwise.
-- Max. concentration = 100 %, unless indicated otherwise.-- Solids content max. 20 ppm (depending of particle size), with the exception of corrosive media. Media with a higher abrasive
solids content are as a rule not permitted (ppm = 1 mg/kg).