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ZN

Product catalog summary

Application
ZN diathermic oil circulation pumps are designed for handling fluids up to 350°C. The fluids should not contain abrasive particles or chemicals that could damage the pump materials. No cooling is required for the seal chamber.

Construction
The ZN series pumps are centrifugal, single-stage, with a horizontal shaft. They feature a self-balancing impeller and dimensions according to ISO 2858. The bearing housing is designed to dissipate heat without needing a cooling circuit. The shaft is supported by two roller bearings, with different lubrication methods for each side. The mechanical seal is positioned between the bearings, ensuring excellent performance due to shaft rigidity. Standard outlet flanges are according to UNI 2223/2229 NP 16, with options for UNI NP 25 or ANSI 150 RF.

Materials
Wet parts are made of nodular cast iron, the impeller and bearing housing are in cast iron, and the shaft is made of alloyed steel.

Interchangeability of Components
High standardization allows for rationalization of common parts, reducing spare parts stock.

Characteristics
Capacity: max. 350 m3/h
Head: max. 100 m
Temperature of liquid pumped: max. 350°C
Maximum pressure inside pump casing: max. 16 bar
Rotation speed: max. 3600 rpm
Flanges DN: 32 - 125

Working
The pump is typically driven by an electric motor coupled via an elastic coupling. A flexible spacer coupling allows for dismantling the pump support without removing the pump casing and motor from the baseplate. The coupling is protected to prevent external intrusion.

Performance
The document includes detailed performance charts and dimensions for various pump models, indicating capacity and head at different rotation speeds.

Catalog excerpts

Diathermic oil circulation pumps Pompe circolazione olii diatermici

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ZN DIATHERMIC OIL CIRCULATION PUMPS DIN 4754 the bearing housing between the bearings and its excellent performance is guaranteed by the shaft rigidity. The standard construction provides the outlet ﬂanges according to UNI 2223/2229 NP 16. Upon request UNI NP 25 or ANSI 150 RF can be supplied. POMPE CIRCOLAZIONE OLII DIATERMICI DIN 4754 CARATTERISTICHE COSTRUTTIVE APPLICATION ZN pumps are designed to handle diathermic ﬂuids up to 350°C temperature. Pumped ﬂuids should contain neither abrasive particles nor chemicals which may attack the pump materials. No cooling of the seal chamber required....

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La loro elevata standardizzazione permette una grande razionalizzazione di particolari comuni con conseguente riduzione del magazzino ricambi. Capacity: max. 350 m3/h Head: max. 100 m Temperature of liquid pumped: max. 350°C Maximum pressure inside pump casing : max. 16 bar Rotation speed: max. 3600 rpm Flanges DN: 32 -125 INTERCAMBIABILITA’ DELLE PARTI WORKING Generally the pump is driven by an electric motor coupled to the pump by means of an elastic coupling. It is possible to ﬁt a ﬂexible spacer coupling so as to dismantle the complete pump support without removing pump casing and motor from...

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LONGITUDINAL SECTION SEZIONE LONGITUDINALE INTERCHANGEABILITY INTERCAMBIABILITA

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HEAT DISSIPATION DISPERSIONE DEL CALORE °C 350 300 250 200 150 100 50 0

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DNd y: MINIMUM DIMENSION FOR DISMANTLING WITHOUT REMOVING THE MOTOR m2 y: MISURA MINIMA PER LO SMONTAGGIO SENZA TOGLIEREIL MOTORE KEY ACCORDING TO UNI 6604 SHAFT ENDCHIAVETTA SECONDO UNI 6604 ESTREMITA DALBERO PUMP SIZE GRANDEZZA POMPA

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PERFORMANCES prestazioni HEAD PREVALENZA PERFORMANCES prestazioni

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

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ZN

ZN

Catalog excerpts

All Pompe Garbarino S.p.A. catalogs and technical brochures