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WALVOIL
Proportional Valves

Proportional Valves

Product catalog summary

Introduction
The document introduces the HC-MV99, a Load Sensing control valve by Hydrocontrol S.p.A., designed for hoisting machines. It highlights the valve's flexibility, adaptability, and energy efficiency due to its pressure compensation principle.

General Specifications
Conversion factors for units of measurement are provided, along with compatibility details for different fluids, temperature ranges, and gasket types.

Technical Information
The HC-MV99 valve supports a maximum working pressure of 420 bar for ports P and A-B, and 20 bar for port T. It handles a rated flow of 130 l/min for ports P-T and 100 l/min for ports A-B, with a working section number of 1 to 8, a spool stroke of 7 mm, and a dead band of 1.5 mm.

Order Modality
The ordering process for the HC-MV99 is detailed, including configuration options for inlet, work section, and outlet arrangements, with an example order code provided.

Dimensions and Assembly
Dimensions for various configurations are provided, along with assembly specifications using tie-rod kits. A dimensional drawing and details on weights and variable dimensions are included.

Actuation Specifications
Specifications for manual, hydraulic, and proportional electrohydraulic actuation are detailed, including force requirements, pressure settings, and electrical specifications such as voltage and resistance.

Configuration Samples for Inlet Section
1. Hydraulic Diagram and Ordering Codes
Examples of configurations for inlet sections are provided, detailing right and left inlet sections with specific hydraulic components and settings, identified by ordering codes.

2. Work Section Arrangement
Each work section includes a spool with various flow ranges, actuated manually, hydraulically, or electro-hydraulically. The selector valve ensures the highest LS signal is transmitted during simultaneous operations.

3. Load Sensing System
The Load Sensing principle maintains flow rate independent of load variations, with compensated sections maintaining flow rate during simultaneous operations.

4. Spool Types and Actuation
Spools are categorized by flow characteristics and actuation methods, with detailed classifications and flow rates for compensated and non-compensated sections.

5. Spool Return Action
Details on spool return actions, including spring-centered and prefeeling options, are provided with specifications for dimensions and clamping torques.

6. Directional Load Limit Kit
A kit using electric signals to indicate spool operation direction is described, including technical specifications such as power supply requirements and protection features.

Specifications and Ordering Information
A female connector with 2 meters of wiring is available upon request, with an ordering code provided. An Allen wrench with a torque range of 4 - 6 Nm is recommended for installation.

Section Arrangement
Different types of valve sections are outlined, with specific ordering codes for compensated and non-compensated sections.

Auxiliary Valves
Sections designed for auxiliary valves require a double choice on work ports A and B, with setting values for antishock and pilot-operated combined valves provided.

End Plate Configurations
Standard and special end plates are available, with specific configurations for different applications and ordering codes provided.

Hydraulic Diagrams
Hydraulic diagrams for special end plates used with fixed displacement pumps are included, noting the necessity of using specific inlet modules based on pump type.

Features and Accessories
Lever kits with different lengths and configurations are available, and an identification plate is included on every HC-MV99 distributor valve.

Installation and Maintenance
General clamping torque specifications are provided for various components, ensuring proper installation and maintenance.

Catalog excerpts

^_ J un Hydrocontrol S.p.a. reserves the right to introduce changes in any moment without ||l/QI fj obligation of prior notice componenti idrodinamici e senza I'obbligo di preavviso" WITH QUALITY MANAGEMENT COMPANY WITH ENVIRONMENTAL MANAGEMENT

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HC-MV99 HCMV99-06 INTRODUCTION Universal products and solutions for Lifting applications HC-MV99 is the new Load Sensing control valve with electro-proportional actuation from di Hydrocontrol S.p.A. This control valve guarantees the best result in terms of control and movement precision for all applications and has been specially studied for hoisting machines. Numerous integrated valve features in addition to countless configuration options make HC-MV99 highly flexible and easily adaptable to the widest applications range. The Load Sensing system maintains the ΔP constant through spool control...

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HC-MV99 HCMV99-06 GENERAL SPECIFICATIONS - CARATTERISTICHE GENERALI Standard working conditions Condizioni di lavoro standard OPERATING TEMPERATURE - TEMPERATURA DI LAVORO -25°C / +80°C KINEMATIC VISCOSITY - VISCOSITA’ CINEMATICA 10 mm2 /s - 460 mm2 /s MAX. CONTAMINATION LEVEL - VALORE MASSIMO DI CONTAMINAZIONE AMMESSA NAS 1638 classe 9 (19/16 ISO-4406) RECOMMENDED FILTRATION LEVEL - GRADO DI FILTRAGGIO CONSIGLIATO β 10 ≥ 75 INTERNAL FILTER (on electroproportional valves pilot line) - FILTRO INTERNO (sul pilotaggio comando elettroidraulico) 30 μm Compatibilità fluidi Fluid compatybility TYPE...

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HC-MV99 HCMV99-06 INDEX - INDICE General index Order modality. . . . . . . . . . . . Dimensions . . . . . . . . . . . . . . Technical information. . . . . . . Functions. . . . . . . . . . . . . . . . Typical curves . . . . . . . . . . . . Inlet section . . . . . . . . . . . . . . Work section arrangement . . Spool type . . . . . . . . . . . . . . . Spool actuation . . . . . . . . . . . Spoll return action . . . . . . . . . Work section type . . . . . . . . . Auxiliary valves . . . . . . . . . . . Outlet section . . . . . . . . . . . . Features . . . . . . . . . . . . . . . . Installation and...

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HC-MV99 HCMV99-06 ORDER MODALITY - MODALITÀ DI ORDINAZIONE Esempio di ordinazione: MV99/1 Order example: MR 005 (150) KV G05 W001C AACC H404 F001 RD1 G04 05PA 05PB KZ3 A B C pag. 14 pag. 19 pag. 29 C aN ric ol 0 0 M at 0 6 0 7 5 N 0 0 ma Sc he 0 0 S.p .A. 195 TR OL ITA LY OC ON- MA DE IN HY DR BO LOG NA B A VALVE TYPE MV99 TIPOLOGIA DISTRIBUTORE MV99 HC-MV99 = type HC-MV99 = modello /1 = number of sections /1 = numero sezioni A: INLET ARRANGEMENT A: ALLESTIMENTO MODULO ENTRATA MR 005 = inlet side and valve type . . . . . . . . . .p. 15 150 = setting (bar) KV G05 = inlet position and available...

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HC-MV99 HCMV99-06 ORDER MODALITY Assembly specifications - MODALITÀ DI ORDINAZIONE Caratteristiche di assemblaggio MV99 proportional valve is assembled with tie-rod kits; tierods lenght depends on sections number. Il corretto allestimento del distributore proporzionale MV99 è garantito dal kit tirante caratterizzato dalla lunghezza variabile (L) a seconda del numero delle sezioni. Tie rod kit - Kit tirante ol a N 0 M at0 ric 6 0 7 5a0 N 00 m Sc he5 0 0 S.p .A. 19 ON TR OLIN ITALY

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HC-MV99 HCMV99-06 DIMENSIONS Standard thread DIMENSIONI Filettature standard OUTLET INLET - - - SCARICO INGRESSO (T) PORT (P) - UTILIZZO PORT - (B) UTILIZZO (A) N co la 0 0 M at0 ri0 6 0 7 5 a N 0 S ch em0 p. LY 1 9 5 0 TR OL INS.ITAA. OC A DRLOGNON- MADE HY BO PORTS UTILIZZI thread - filettature (BSP) ISO-228 thread - filettature (SAE UN-UNF) ISO-725 Inlet - Ingresso (P) 3/4” BSP 1”1/16 -12 UN Ports - Utilizzi (A-B) 1/2” BSP 7/8”-14 UNF Outlet - Scarico (T) 3/4” BSP 1”1/16 -12 UN Ordering codes Sigle di ordinazione 1/2” BSP 3/4” BSP 7/8”-14 UNF 1”1/16 - 12 UN G04 G05 U04 U05 Proportional Valve...

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HC-MV99 HCMV99-06 TECHNICAL INFORMATION - DATI TECNICI Technical specifications Caratteristiche tecniche • WORKING SECTION NUMBER . . . . . . . . . . . . . . . 1 - 8 • NUMERO SEZIONI DI LAVORO. . . . . . . . . . . . . . . 1 - 8 • SPOOL STROKE . . . . . . . . . . . . . . . . . 0,276 + 0,276 in • CORSA DELLA SPOLA . . . . . . . . . . . . . . . . . 7 + 7 mm • SPOOLS PITCH . . . . . . . . . . . . . . . . . . . . . . . . 1,694 in • INTERASSE CURSORI . . . . . . . . . . . . . . . . . . . 43 mm • DEAD BAND . . . . . . . . . . . . . . . . . . . . . . 0,06 + 0,06 in • BANDA MORTA . . . . . . . . . . ....

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HC-MV99 HCMV99-06 FUNCTIONS Compensated on inlet section valve LS - FUNZIONI Distributore compensato in ingresso A3 B3 A2 B2 A1 B1 A4 B4 7 7 T1 7 7 T 1 P 2 6 4 3 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 6 9 8 10 10 9 8 5 Electric operated dump valve Pressure reducing valve with internal filter for electrohydraulic actuation Relief valve for electrohydraulic actuation Inlet pressure compensator Main relief valve Manual and electrohydraulic operated spool L.S. selection valve Antichock auxiliary valve Combined auxiliary valve Anticavitation auxiliary valve 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Compensated on work...

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HC-MV99 HCMV99-06 TYPICAL CURVES - CURVE CARATTERISTICHE COMPENSATED ON INLET SECTION VALVE - DISTRIBUTORE COMPENSATO IN INGRESSO 1 Flow on ports A and B (Q A/B) as function of spool stroke. Inlet flow Qp = 100 l/min Erogazione della portata sulle bocche A e B (Q A/B) in funzione della corsa dello stelo. Portata in ingresso Qp = 100 l/min COMPENSATED ON INLET SECTION VALVE - DISTRIBUTORE COMPENSATO IN INGRESSO 2 Flow on ports A and B (Q A/B) as function of inlet flow (Qp). COMPENSATED ON WORK SECTION VALVE Portata sulle bocche A e B (Q A/B) in funzione della portata in ingresso (Qp) con stelo...

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HC-MV99 HCMV99-06 TYPICAL CURVES PRESSURE DROP - - CURVE CARATTERISTICHE CADUTA DI PRESSIONE 4 Pressure drop (A/B in T) as function of flow. Spool at end of stroke INLET SECTION PRESSURE COMPENSATOR Caduta di pressione (A/B in T) in funzione della portata smaltita con stelo completamente spostato. - COMPENSATORE DI PRESSIONE IN INGRESSO 5 Δp di attraversamento in funzione della portata in ingresso. Valido su versione in centro aperto. Pressure drop as function of inlet flow for open centre circuit. COMPENSATED ON INLET SECTION VALVE - DISTRIBUTORE COMPENSATO IN INGRESSO 6 Flow on ports A and...

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