HIGH QUALITY MARINE HYDRAULICS

Our in-house designed and manufactured Hydranor brand winch blocks have been thoroughly tested since 1962 by the most demanding marine and offshore customers worldwide.

Sales Contacts

Norway	International	Spare parts
Sonny Thoresen Sanin Muraspahic	Olav Kyllesdal Karl Nilssen	Kongsberg

Custom block and manifold

A custom block or manifold from Servi can replace several stand-alone components or combine several functions thus optimizing operation with a reduction in installation time and possible leak points in the installation.

With our in-house design and production, we are 100% in control of the process from concept to ready product and can offer very competitive delivery times.

Please contact our in-house manifold expert Sonny Thoresen for a competitive offer.

Winch blocks for variable pump systems

Flow rate (L/min)	Model	Description	Mounting	Standard valve configuration	Available options
60-120	7MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed
70-220 (650)	9MB	Compact design modular winch block with pressure compensated flow control	Direct mount on winch motor	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension 650 l/min flow rate
120-200	8MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension
120-650	6MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension Brake release
1000-1500	6MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension Brake release
250-1500	10MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation	Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Brake release
120-320	11MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation	Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Brake release
150-320	12MB	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension Brake release

Winch blocks for fixed pump systems

Flow rate (L/min)	Model	Description	Mounting	Standard valve configuration	Available options
<200	SVB	Compact design modular winch block	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated load control valve	Hydraulic remote control Brake release
100-140	VBA20	Compact design modular winch block	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated load control valve	Hydraulic remote control Brake release
120-650	6MBA	Compact design modular winch block	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension Brake release
70-220	8MBA	Compact design modular winch block with pressure compensated flow control	Stand-alone installation or Direct mount on winch motor using a dedicated adapter	Integrated counterbalance valve Crossflow relief Max flow tuning valve	Hydraulic remote control Electric remote control Two speed Mooring tension Brake release
240-450	VB25/30	Compact design modular winch block	Stand-alone installation	Integrated load control valve	Hydraulic remote control Brake release Tension control
<900	VB40	Compact design modular winch block	Stand-alone installation	Integrated load control valve	Hydraulic remote control Brake release Tension control

Valves

Flow rate (L/min)	Model	Description	Mounting	Standard valve configuration	Available options
100-500	1STB	4 way - Directional control valve	ISO sub plate	Manual proportional control	Hydraulic remote control 6 spool options Brake release
35-300	2ST(B)	2 way - Directional control valve	Threaded or ISO sub plate	Mechanical control by actuator	2 spool options
50-450	5ST(B)	4 way - Directional control valve	Threaded or ISO sub plate	Manual proportional control	On/off hydraulic remote control 6 spool options Brake release
50-450	5ST	6 way - Directional control valve	Threaded	Manual proportional control	On/off hydraulic remote control Brake release
450-1000	13ST(F)(B)	4 way - Directional control valve	SAE flange or Sub plate	Manual proportional control	On/off hydraulic remote control 6 spool options Brake release
450-1000	13ST(F)	6 way - Directional control valve	SAE flange	Manual proportional control	On/off hydraulic remote control Brake release
200-700	20ST(F)(B)	4 way - Directional control valve	SAE flange or Threaded or Sub plate	Manual proportional control	On/off hydraulic remote control 6 spool options Brake release
150-650	7AVB	Counterbalance valve	SAE flange	Adjustable pilot pressure	Adjustable throttle valve Check valve for free flow
45	1ST(B)4432	Directional control valve	ISO size 5	Electrically on/off	5 spool options AC or DC operation
60	1STB4431	Directional control valve	ISO size 3	Electrically on/off Emergency manual override	5 spool options AC or DC operation
25-50	1STB442	Directional control valve	ISO size 3 or ISO size 5	Hydraulic remote on/off	6 spool options
25	29ST	Directional control valve	Threaded or ISO size 3 (NG6)	Manual proportional control	6 spool options
25	1STB44*1	Directional control valve	ISO size 3 (NG6)	Manual proportional control	Hydraulic remote control
4	1FGB	Proportional control valve	ISO size 3 (NG6)	Manual proportional control	7 pressure range spring options 2 spool options
4	8FGB	Proportional control valve	ISO size 3 (NG6)	Electric proportional control IP 66	12V DC 24V DC
4	8FGBR	Proportional pressure reducing valve	ISO size 3 (NG6)	Electrically operated Max P port pressure 350 bar	12V DC 24V DC
35-300	3SV(B)	Pressure relief valve	Threaded	Pressure limiting	3 adjustable pressure ranges
35-300	2SVD(B)	Pressure relief valve	Threaded	Double acting pressure relief	3 adjustable pressure ranges
35-300	3RV(B)	Pressure reducing valve	Threaded	Pressure reducing	2 adjustable pressure ranges

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