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Garbarino
G-GH series

G-GH series

Product catalog summary

Applications
G series multistage centrifugal pumps are designed for pumping clean or slightly dirty liquids without solids in suspension. They are utilized across various industries such as steel, waterworks, pressure raising systems, fire fighting, boiler feedwater, high pressure washing, and reverse osmosis.

Construction
The pumps feature a multistage centrifugal design with radial split casings. They have strategically placed supporting feet for stability and installation flexibility. Impellers include balancing holes to reduce axial thrust, and the shaft is supported by grease or oil lubricated bearings.

Technical Specifications

Maximum operating temperature: Up to 180°C with special arrangements.
Maximum operating pressure: Suction side up to 25 bar, discharge side up to 64 bar.
Capacity: Up to 600 m³/h.
Total head: Up to 400 m.
Speed: Up to 3500 RPM.
Flanges: Suction side NP 16-25, delivery side NP 40-64.

Vertical Multistage Centrifugal Pumps (GV Series)
These pumps are used in high-pressure applications and the shipbuilding industry, featuring upper ball bearings and lower bushing support.

Materials
Pumps are available in cast iron, stainless steel, bronze, and special alloys, with maximum working pressures of 40 bar for cast iron and 64 bar for other materials.

GH Series
The GH series is designed for high-pressure applications, achieving heads up to 85 bar and capacities up to 500 m³/h. They are suitable for power generation, seawater desalination, and other demanding applications.

Key Features

Special design of the first stage impeller to reduce NPSH required.
No balancing holes on impellers, reducing recirculation and improving efficiency.
Patented throttling device for improved pressure maintenance and reliability.
High flexibility with rotatable suction flange.

Performance
Performance diagrams are available for different pump models, showing capacity and head at various RPMs. Operating diagrams at 60 Hz are also available upon request.

Specifications
The document provides detailed specifications for various pump types, including their capacity, weight, and dimensions. The capacity ranges from 50 to 1400, and the weight is specified in kilograms. The pump types are categorized by their suction and delivery flange dimensions, which adhere to UNI standards.

Procedures
The document outlines the dimensions and configurations for different pump models, including the number of stages and flange positions. It specifies the suction and discharge flange standards, with options for different pressure ratings (PN16, PN25, ANSI 150, PN64, PN100, ANSI 600).

Standards
The pumps conform to UNI standards for flange dimensions and keying according to UNI 6604. The document also mentions ATEX compliance on request.

Recommendations
For specific applications, the document suggests requesting customized configurations ("ON REQUEST") for suction and delivery flange orientations.

Key Data from Tables
The tables provide detailed measurements for each pump type, including dimensions for suction and discharge flanges, overall dimensions, and the number of stages. The tables also list the number of holes and their sizes for flange connections.

Contact Information
POMPE GARBARINO S.p.A. provides contact details for their headquarters in Acqui Terme, Italy, and a branch in Milan, Italy, including phone numbers, fax numbers, and email addresses.

Catalog excerpts

Multistage high pressure pumps Pompe multistadio ad alta pressione

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MULTISTAGE CENTRIFUGAL PUMPS POMPE CENTRIFUGHE MULTISTADIO G series multistage centrifugal pumps are designed for trou- ble-free pumping of clean or slightly dirty liquids without so- lids in suspension and used in: • Steel industry • Waterworks and water supply plants • Pressure raising systems • Water supply systems • Fire fighting systems • Boiler feedwater systems • High pressure washing • Reverse osmosis Le pompe centrifughe multistadio della serie G sono idonee al convoglia- melo di liquidi puri o leggermente torbidi, senza solidi in sospensione. Trovano particolare impiego nei seguenti...

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versione con lubrificazione ad olio (125 G) bare shaft version (G) versione ad asse nudo (G) bare shaft version (G) versione ad asse nudo (G) SPECIAL MECHANICAL SEALS ATEX CONSTRUCTION MECHANICAL SEAL WATER COOLER

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MULTISTAGE HIGH PRESSURE CENTRIFUGAL PUMPS POMPE CENTRIFUGHE MULTISTADIO Multistage pump family has been widely tested over the ye- ars in applications with head up to 40 bar. Now, with the newly developed GH pumps, we can achieve head up to 85 Dopo anni di collaudate applicazioni delle pompe multistadio della famiglia G su servizi con prevalenze fino a 40 bar, è stato deciso di aumentare le prestazioni fino ad arrivare a prevalenze di 85 bar con The pumps are horizontal multistage, radially split; the impel- lers are arranged between external bearings. • Feet cast with suction and delivery casings...

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Maximum speed 3600 rpm, first critical speed above 5000 rpm Single balanced mechanical seal Thrust bearing air or water cooling (option) GH pumps can be supplied in a wide range of materials of construction. From the basic version which casing is made of nodular cast iron (GS 500 grade) and impellers in cast iron (G 25 grade) moving to special alloyed steels such as Aisi 316 L, Duplex, Superduplex , Hastelloy B and C, Monel, Alloy 20. Fully bronze constructed pumps are also available. DATI TECNICI Velocità massime di 3600 rpm con prima velocità critica sopra i 5000 rpm Tenuta meccanica semplice...

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SEZIONE LONGITUDINALE

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VERSIONE VERTICALE

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Operating diagrams at 60 Hz for G pumps also available. Contact our main office. / campi di lavoro delle pompe G sono disponibili anche a 60 Hz. Contattare il nostro ufficio.

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CAPACITY PORTATA QmVh CAPACITY PORTATA Qrrf/h

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pump type 25 G -=- 65 G pump type 80 G -=- 200 G non drive end view pompa tipo 25 G -f 65 G pompa tipo 80 G ^ 200 G vista lato opposto comando PUMP SHAFT SECTION SUCTION FLANGE DISCHARGE FLANGE SUCTION FLANGE POSITION POSIZIONE DELLA FLANGIA VISTA LATO COMANDO

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PUMPSHAFT SECTION FLANGIA ASPIRAZIONE FLANGIA MANDATA Orientamento bocche aspirazione e mandata PUMP TYPE POMPA TIPO

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Via Marenco, 44 -15011 Acqui Terme (AL) - Italy - Tel. +39 0144.388671 - Fax +39 0144.55260 E-mail: [email protected] Milan Branch: Viale Andrea Doria, 31 - 20124 Milano - Italy - Tel. +39 02.67070037 - Fax +39 02.67070097 E-mail: [email protected]

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