MM FIRE FIGHTING NAVAL PUMPS

Product catalog summary

Description of the Electric Pump: The electric pump model MM 100/125 with capacities of 65 and 130 t/h is a horizontal split casing type featuring two opposite centrifugal impellers. The horizontal division simplifies maintenance. It is powered by an asynchronous three-phase electric motor connected via an elastic coupling, mounted on an electro-welded steel frame. The design minimizes structural noise transmitted to the ship hull, with the base typically fixed using four resilient blocks to filter high-frequency noise.

Tests for Type Approval: The pump undergoes rigorous testing as per NAVALCOSTARMI standards, including integrity inspection, hydrostatic pressure test, voltage application test, performance test, sealing and alignment test, endurance test over 700 hours with more than 100 start-ups, inclined operation test, self-induced vibrations and structural noise test, impact and mechanical ambient vibration test, and performance tests post-impact and vibrations. These tests are conducted under the supervision of MARIPERMAN and NAVALGENARMI delegates.

Main Features: The pump operates at a power of 55 KW for 130 t/h and 45 KW for 65 t/h, with a steady-state speed of 1775 rpm and 1770 rpm respectively. It functions at an operation voltage of 440 V and a frequency of 60 Hz, with a manometric head of 100 m. The pump weighs 1195 kg for 130 t/h and 1050 kg for 65 t/h, with inlet/outlet nozzles of 125/100 mm.

Material of Main Components: The upper and lower casing is made from GCuSn10Zn2Ni2 alloy, the shaft from stainless steel X2CrNiM01712, and the impellers from GCuAI11 FeMi4 alloy. The hydraulic casing is designed for maximum reliability against shock and corrosion. The pump's components are identical, facilitating spare parts supply. Maintenance is minimal due to grease-lubricated bearings, and the mechanical seal allows for reverse operation. In emergencies, the mechanical seal can be replaced with packing.

Characteristic Test Curves: The document includes test curves showing delivery rate, head, input power, and required NPSH for the pump models at different flow rates.

Catalog excerpts

Fire fighting naval pumps Pompe navali antincendio

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MM FIRE FIGHTING NAVAL PUMPS Normalmente il basamento è fissato a scafo previa interposizione di quattro resilienti che filtrano il rumore trasmesso alle alte frequenze. POMPE NAVALI ANTINCENDIO TESTS FOR TYPE APPROVAL Testing carried out according to the Standards shown in Table UMM 1008, May 1984 issue, of NAVALCOSTARMI: a - Inspection and checking of integrity b - Test of hydrostatic pressure c - Test of voltage applied between electric phases d - Performance test e - Test of sealing and alignment f - Endurance test over 700 hours with more than 100 start-ups g - Test of operation in inclined...

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e - Prova delle tenute e dell'allineamento f - Prova di durala di 700 h con oltre 100 avviamentl g - Prova di funzionamento inclinato h - Rilievo vibrazioni autoindotte e rumore strutturale i - Prova d'urto e vibrazioni meccaniche ambientali l - Prova delle prestazioni dopo urto e vibrazioni m - Smontaggio e rimontaggio In particolare alcune prove sono state svolte come da programma trasmesso da MARIPERMAN La Spezia, a cui hanno partecipato dele-gati di MARIPERMAN e NAVALGENARMI Torino. MATERIAL OF MAIN COMPONENTS Upper/lower casing: GCuSn10Zn2Ni2 alloy UNI 7013-72 Shaft: Stainless steel X2CrNiM01712 UNI...

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TEST BENCH BANCO PROVE Run for structural noise measurement Characteristic test curves with measurement of delivery rate Head - Input power and required NPSH Curve caratteristiche di collaudo con rilievo della portata Prevalenza - Potenza assorbita e NPSH richiesto Diagramma di funzionamento pompa tipo MM 100/125 130 T/h - 1750 giri Diagramma di funzionamento pompa tipo MM 100/125 65 T/h - 1750 giri Fase di rilievo rumore strutturale

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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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