HP Catalogue
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HP-HV Technic al Catalogue 50Hz

Research. Development. Excellence. marly-pumps.it Viale dell’Industria, 1 37040 Veronella (VR) - Italia Tel. +39 0442 489500 Fax +39 0442 489510 com@pentax-pumps.it OPERATIONAL HQ Via Salvo D'Acquisto, 4/B 42020 Albinea (RE) - Italia Tel. +39 0522 597112 Fax. +39 0522 589321

The Company: Marly is a company specialized in centrifugal pumps and with many years of experience in the industrial sector. The current managerial staff began an activity of producing pumps with special materials and executions also on commissioning. For over 28 different application sectors success in the pump sector since the 70s. Today Marly is a standard-setting player in the industrial pumps sector, with in-house design, production and testing.

QUALITY Pentax Industries is UNI EN ISO 9001, UNI EN ISO 14001 and UNI ISO 45001 certified. Pentax is equipped with a control structure and a continuous improvement production process plan that provide, for each product, compliance with the most stringent quality standards in the industry. OFFICIAL JOURNAL OF THE EUROPEAN UNION Regulation UE 547/2012 ANNEX II «The benchmark for most efficient water pumps is MEI ≥ 0,70». «The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a...

PRODUCTION Maximum Expertise applied to the industry Marly’s Production is situated in the industrial district of Reggio Emilia Our products: with its manufacturing department, Marly can ensure maximum care and accuracy in all manufacturing stages, from processing cast parts, assembling them and lastly performing hydraulic testing on the pump before shipping. All pumps are end-of-line tested to ensure the correct operation of the installation. The hydraulic performance are controlled and guaranteed according to ISO 9906 grade 3B. Marly is situateted in the industrial district of Reggio...

CUSTOMER SERVICE Marly offers a number of tools for both pre- and post-sale customer support. Today, thanks to many years of experience in industrial sectors and the most advanced programming and data processing instruments in the mechanical and chemical fields, Marly is able to provide customers with a set of competencies and analysis tools with high added value. PRE-SALES During the inital assessment of the various products, Marly technical personnel are availale to draft technical reports that allow customers to compare our solutions with those described in the technical specifications....

MAIN CHARACTERISTICS OF THE HP LINE MAIN TECHNICAL AND CONSTRUCTIONAL FEATURES AVAILABLE MATERIALS AND EXECUTIONS CONSTRUCTIVE FEATURE AND OPERATIVE DATA PUMP OVERALL DIMENSIONS SPARE PARTS AND REFERENCE CODES AVAILABLE PUMP FLANGE POSITIONS DIRECTION OF FLANGES HORIZONTAL PUMPS DIRECTION OF NOZZLES VERTICAL PUMPS MOTOR DATA AND OVERALL DIMENSIONS HEAD LOSSES TECHNICAL APPENDIX POWER ABSORBED BY THE GLAND

MEASUREMENT COMPARISON IN UNIT TECHNICAL APPENDIX CASE HISTORY

Introduction to the HP line The multistage centrifugal pumps belonging to the HP series have a radial cross section, allowing an horizontal or vertical installation. The flanges of the suction and discharge ports are according to the EN or ANSI standards, these ports can operate radially and can be rotated 90°, in the HP, HPM and HPR models, or have an axial suction port for the HPA and HPMA models. This family of pumps is designed to operate in heavy duty conditions and with very high pressures (up to 100 Bar for the HPR versions) and with temperatures up to 180°C. The great choice of...

Main characteristics of the HP line + Thrust bearing (grease or oil with optional external cooling) for use of standard engines High hydraulic efficiency, up to 80% Balancing drum, placed on the discharge casing, which effectively compensates the axial thrust produced by the impellers Versatile sealing system: which is available as packing, single Mechanical or Balanced Mechanical, other special types upon request The pumps’ bearings are available with grease or oil lubrication in order to assure a long operating life Wear rings: they are available both fixed as well as rotating, in various...

Main fields of application Pressure raising groups in the building and construction sector Geothermal plants Firefighting and applications with diesel engines Service facilities in the petrochemical sectors, Energy Mining and ATEX applications Boiler feed Water desalination by reverse Osmosis Filtration and ultrafiltration plants Water treatment plants

Main technical and constructional features The impellers which are casted and available in various metals, are radial, closed and blocked to the shaft by keys. The suction impeller is designed to achieve very low NPSHr values. To improve the hydraulic efficiency, limit the mechanical wear and optimise the routine maintenance, all the impellers are equipped with shims. Available upon request rotating shims and on the hub. Radial impeller The seal chamber is suitable to house both a packing seal as well as a mechanical one. The shaft near the seal is protected by specific special steel shaft...

Available materials and executions Part description Material Executions (**) Cast Iron Suction casing Discarge casing Stage casing Impeller Wear ring Shaft Bushing Balance drum Drum Wear Sleeve Seal System Pump O-Rings Bearings housing Stabil Peek ST530 EN (X2CrNiMoN22.5.3) 1.4462 ASTM (S1803) Mechanical Seal Carb./SIC/EPDM Gland Packing (*) For these items Bronze and Stainless Steel AISI 316 materials are available on request. (**) Special Materials and executions are available on request.

Seal materials and types The mechanical seals are standardized according to EN 12756 and available on “balanced” and “un-balanced” types, with model codes MG12 e H7N. Tenuta Semplice Mechanical seals | Mechanical seals for pumps | Elastomer bellows seals Model MG12 un-balanced and bi-directional Materials and diam. “d1” for H75N are as per MG12 Burgmann mechanical seal Seal face 1.3 Set of springs 1.4 PEEK-PTFE disk 2 Mechanical seals materials POSITION 1.1 - 2 Antimony impregnated Carbon Silicon Carbide Available Materials Combinations : MG12 – H7N POSITION Rotating Part Stationary Part...