Pumps Hi Lo Vivoil

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HI-LO Pump

P. HI-LO PUMPS

VIVOIL OLEODINAMICA VIVOLO

HI = HIGHT pressure - LOW flow LO = LOW pressure - HIGHT flow

ITALIANO

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

2 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Summary

General description

Dimensioning

Configuration table - Gr.1 (Ø25.4 german ports)

Configuration table - Gr.1 (Ø25.4 bspp ports)

Configuration table - Gr.2 (Ø36.5 german ports)

Configuration table - Gr.2 (Ø36.5 bspp ports)

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

3 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

General description

The HI-LOW pump is useful when an operating cycle is required to run at different speeds, especially when a considerable part of the cycle is carried out with zero or far less than the actual working effort. Typical applications for this type of pump are: forming machine tools, waste compactors, deep-drawing presses, log splitters, etc. The HI-LOW VIVOIL pump is essentially a double pump in which the drive pump is the pump dedicated to providing the high pressure; the final pump provides the low pressure flow (added to the front pump) for fast movements. The necessary valves have been integrated into the intermediate plate and cover: - 3-way directional valve with external piloting - 2-way directional check valve (guide poppet type) Below a given pressure (decoupling pressure, set by adjusting the set screw of the valve), the flow rate delivered by the pump is the sum of the flow rate of the front and rear stages. Above the decoupling pressure, the rear stage is put into recirculation and delivers no flow; under these conditions, only the front stage operates, whose flow rate is only given by its displacement, being able to reach the maximum pressure required by the application. The function of the diverter valve is carried out by the directional valve in the pump cover, which automatically switches the flow direction depending on the piloting: when a certain pressure is exceeded, the valve switches and opens the recircula tion channel of the pump. The non-return valve closes the connection between the two stages so that only the front stage reaches maximum pressure.

Features

• N.1 INLET • N.1 OUTLET • DIRECTIONAL SPOOL-TYPE VALVE • DIRECTIONAL CONTROL TWO WAY CHECK VALVE • N.2 PRESSURE GAUGE SOCKETS: Mb, Ma

SCHEME HI-LOW

HIGH PRESSURE

HIGH FLOW

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

4 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Dimensioning

The main purpose of the HI-LOW pump is to optimise power absorption during the operating cycle by in-creasing the opera ting speed during low-pressure operation. Data:

V LO V HI p LO p HI 10 Q LO Q HI ƞ v ƞ m n

[cc/rev] [cc/rev] [bar] [bar] [rpm] [bar] [l/min] [l/min] 0.9÷0.95 0.8÷0.9

= final pump displacement (low-pressure element) = pump drive displacement (high-pressure element) = maximum pressure with high flow and low pressure operation = maximum pressure with high pressure and low flow operation

= engine rpm

= final stage recirculation pressure (average value, depends on operating flow rates)

= flow rate of the final pump (low-pressure element) = flow rate of the drive pump (high-pressure element)

= volumetric efficiency = mechanical efficiency

Calculations:

T LO [Nm] = p LO x (v LO + v HI ) / 20 x π x ƞ m T HI [Nm] = (p HI x v HI + 10 x v LO ) / 20 x π x ƞ m T INT [Nm] = (p LO x v LO ) / 20 x π x ƞ m

= total torque absorbed in LOW PRESSURE phase = total torque absorbed in HIGH PRESSURE phase

= totale torque absorbed in final pump (low-pressure element)

Power absorbed:

Pm LO [kW] = (v LO + v HI ) x p LO x n / 600000 x ƞ m = power absorbed in LOW PRESSURE phase Pm HI [kW] = [(v HI x p HI ) + (v LO x10)] x n / 600000 x ƞ m = power absorbed in HIGH PRESSURE phase Total flow:

Q LO [l/min] = v LO x n x ƞ v Q HI [l/min] = v HI x n x ƞ v Q TOT [l/min] = Q LO + Q HI

= flow rate delivered by the final pump (low-pressure element) = flow rate delivered by the driving pump (high-pressure element)

= total pump flow rate with p < p LO

Limit value:

Q LO < 60 [l/min] (gr. 2) Q LO < 20 [l/min] (gr. 1) p HI = see pressure value P1-P3 on pump catalogue p LO = see valve calibration range

Maximum coupling torque gr.2 = 86.2 [N/m] Maximum coupling torque gr.1 = 42.8 [N/m] It is recommended to ALWAYS check: - torque absorbed by the primary shaft and intermediate coupling;

- T LO < T.2 max. permissible see table permissible torques for shafts - T HI < T.2 max. permissible see table permissible torques for shafts

- T INT < Maximum coupling torque - flow rate final pump (Q LO ) - Q LO < 60 [l/min] (gruppo 2)

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

5 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Configuration table - Gr.1 - german ports

ELEMENT “HI” DISPLACEMENT

ELEMENT “LOW” DISPLACEMENT 23 LO-1P/3.2 25 LO-1P/3.8 27 LO-1P/4.3 29 LO-1P/4.9 31 LO-1P/5.9 32 LO-1P/6.5 34 LO-1P/7.8 36 LO-1P/9.8

16 17 18 20 21 23 25

XV-1P/0.9 XV-1P/1.2 XV-1P/1.7 XV-1P/2.2 XV-1P/2.6 XV-2P/3.2 XV-2P/3.8

GERMAN

BODY

9 B 1

CALIBRATION RANGE

FLANGE see catalogue

SHAFT

see catalogue

Dimension Gr.1 - flange ø25.4 - co001- clockwise - german ports

LOW

Min speed

Max speed

Disjunction pres sure

Min speed

Max speed

Max. Pressure

Displacement

TYPE

P1 (bar)

P3 (bar)

P max (bar)

cm 3 /rev

rpm

rpm rpm

HI-1P/0.9 HI-1P/1.2 HI-1P/1.7 HI-1P/2.2 HI-1P/2.6 HI-1P/3.2 HI-1P/3.8

0.91 1.17 1.56 2.08 2.60 3.12 3.64

41.5 42.5

240

290

LO-1P/3.2 LO-1P/3.8 LO-1P/4.3 LO-1P/4.9 LO-1P/5.9 LO-1P/6.5 LO-1P/7.8 LO-1P/9.8

3.12 3.64 4.16 4.94 5.85 6.50 7.54 9.88

50 52 54 57 63 67 76

700 700 700 700 700 700 700 700

6000 5400 4700 4000 3400 3000 2600 2000

44 46 48 50 52

700

6000

250

300

60/90/140*

60.5

Code:

* see calibration range valve

9 B 1 02 F Q ..

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

6 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Configuration table - Gr.1 - bspp ports

ELEMENT “HI” CILINDRATE

ELEMENT “LO” CILINDRATE

16 17 18 20 21 23 25

XV-1P/0.9 XV-1P/1.2 XV-1P/1.7 XV-1P/2.2 XV-1P/2.6 XV-2P/3.2 XV-2P/3.8

23 25 27 29 31 32 34 36

LO-1P/3.2 LO-1P/3.8 LO-1P/4.3 LO-1P/4.9 LO-1P/5.9 LO-1P/6.5 LO-1P/7.8 LO-1P/9.8

BSPP

BODY

9 B 1

CALIBRATION RANGE

FLANGE see catalogue

SHAFT

see catalogue

Dimension Gr.1 - flange ø25.4 - co001- clockwise - bspp ports

LOW

Min speed

Max speed

Disjunction pres sure

Min speed

Max speed

Max. Pressure

Displacement

TYPE

P1 (bar)

P3 (bar)

P max (bar)

cm 3 /rev

rpm

rpm rpm

HI-1P/0.9 HI-1P/1.2 HI-1P/1.7 HI-1P/2.2 HI-1P/2.6 HI-1P/3.2 HI-1P/3.8

0.91 1.17 1.56 2.08 2.60 3.12 3.64

41.5 42.5

240

290

LO-1P/3.2 LO-1P/3.8 LO-1P/4.3 LO-1P/4.9 LO-1P/5.9 LO-1P/6.5 LO-1P/7.8 LO-1P/9.8

3.12 3.64 4.16 4.94 5.85 6.50 7.54 9.88

50 52 54 57 63 67 76

700 700 700 700 700 700 700 700

6000 5400 4700 4000 3400 3000 2600 2000

44 46 48 50 52

700

6000

250

300

60/90/140*

60.5

Code:

* see calibration range valve

9 B 1 02 F G ..

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

7 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Configuration table - Gr.2 - german ports

ELEMENT “HI” DISPLACEMENT

ELEMENT “LO” DISPLACEMENT

41 43 45 47 49

XV-2P/ 4 XV-2P/ 6 XV-2P/ 9 XV-2P/ 11 XV-2P/14

GERMAN

49 51 53 55 57 59 61 63

LO-2P/14 LO-2P/17 LO-2P/19 LO-2P/22 LO-2P/26 LO-2P/30 LO-2P/34 LO-2P/40

BODY

9 B 2

CALIBRATION RANGE

FLANGE see catalogue

SHAFT

see catalogue

Dimension Gr.2 - flange ø36,5 - co001- clockwise - german ports

HIGH

LOW

Max speed

Disjunction pressure

Min speed

Max speed

Displacement H Max. Pressure Min speed

14.40 64 16.80 68 19.20 72 22.80 78 26.20 82 30.00 90 34.20 97 Displacement L cm 3 /rev

OUTLET

INLET

TYPE

P1 (bar) P3 (bar)

P max (bar)

cm 3 /rev

rpm rpm

HI-2P/04 HI-2P/06 HI-2P/09 HI-2P/11 HI-2P/14 Code:

4.20 47 6.00 50 8.40 54 10.80 58

LO-2P/14 LO-2P/17 LO-2P/19 LO-2P/22 LO-2P/26 LO-2P/30 LO-2P/34 LO-2P/40

3500

260 300

70/105/210*

700 3500

3100 2700 2300 2000 1700 1500

700

14.40 64 250 290

70/105/180* 70/105/160* 70/105/140*

The dimensions and the INLET / OUTLET positions depend on the operating condi tions. Contact the UT.

39.60 106 70/105/120*

9 B 2 02 E Q ..

* see calibration range valve

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

8 www.vivoil.com- Italiano

P. HI - LO

P OMPE A LTA B ASSA PRESSIONE

VIVOIL OLEODINAMICA VIVOLO VIVOIL OLEODINAMICA VIVOLO

Configuration table - Gr.2 - bspp ports

ELEMENT “HI” DISPLACEMENT

ELEMENT “LO” DISPLACEMENT

41 43 45 47 49

XV-2P/ 4 XV-2P/ 6 XV-2P/ 9 XV-2P/ 11 XV-2P/14

GAS

49 51 53 55 57 59 61 63

LO-2P/14 LO-2P/17 LO-2P/19 LO-2P/22 LO-2P/26 LO-2P/30 LO-2P/34 LO-2P/40

BODY

9 B 2

CAMPO DI TARATURA

FLANGE

SHAFT

see catalogue

Dimension Gr.2 - flange ø36,5 - co001- clockwise - german ports

HIGH

LOW

Max speed

Disjunction pressure

Min speed

Max speed

Displacement H Max. Pressure Min speed

14.40 64 16.80 68 19.20 72 22.80 78 26.20 82 30.00 90 34.20 97 Displacement L cm 3 /rev

TYPE

P1 (bar) P3 (bar)

P max (bar)

cm 3 /rev

rpm rpm

Code: HI-2P/04 HI-2P/06 HI-2P/09 HI-2P/11 HI-2P/14

4.20 47 6.00 50 8.40 54 10.80 58

LO-2P/14 LO-2P/17 LO-2P/19 LO-2P/22 LO-2P/26 LO-2P/30 LO-2P/34 LO-2P/40

3500

260 300

70/105/210*

700 3500

3100 2700 2300 2000 1700 1500

OUTLET 1” BSPP

INLET

700

3/4” BSPP 1/2” BSPP

14.40 64 250 290

70/105/180* 70/105/160* 70/105/140*

3/4” BSPP

The dimensions and the INLET / OUTLET positions depend on the operating condi tions. Contact the UT.

39.60 106 70/105/120*

9 B 2 02 E G ..

* see calibration range valve

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

9 www.vivoil.com- Italiano

Vivoil Oleodinamica Vivolo reserves the right to make changes to this publication as it sees fit at any time without prior notice in order to keep the information correct and up to date with technical progress.

28-10-2024 PUMPS HI_LOW_2024-rev3

Vivoil Oleodinamica Vivolo s.r.l- Società a Socio Unico- via Leone Ginzburg 2-4 40054 Budrio (BO) Italy tel: +39 051 803689 fax: +39 051 800061

10 www.vivoil.com- Italiano

Vivoil Oleodinamica Vivolo s.r.l Via Leone Ginzburg 2-4 40054 Budrio (Bo) Italy Tel +39 051 803689 - Fax+39 051 800061 site : www.vivoil.com

VIVOIL OLEODINAMICA VIVOLO

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