BESI MARINE SYSTEMS

BESI MARINE SYSTEMS develop and manufacture valve actuators, control valves and complete remote-control systems for ships as well as land-based industries.

Products

Systems

Remote Control System

Tank Level Gauging and Draft Measurement

Anti-Heeling System

Valves

2-/ 3-Way Regulating Valves

Quick Closing Valves

Actuators

Hydraulic

Hydraulic Spring Return Actuator (Type HSTP - F)

Hydraulic Double-Acting Actuator (Type HSTP - D)

Hydraulic Linear Actuator (Type HKV)

Electro-Hydraulic Power Pack (Type EHPP)

Pneumatic

Pneumatic Quarter Turn Actuator (Type PSA)

Linear Pneumatic Actuators (Type PKV)

Electric

Electric Quarter Turn Actuators (Type EST)

Electric Linear Actuators (Type ELA)

Remote Control Systems

As an integral part of BESI´s flow management systems, Control Systems for Remote Controlled Valves (RCV), Tank Level Gauging (TLV) and Anti Heeling System (AHS) are offered.

Control Stations

BESI designs and produces centralized and decentralized control stations for hydraulic, pneumatic, electric and electro-hydraulic systems. These control stations are designed according to the rules and requirements of all major classification societies and contain all necessary components, such as power packs, for safe operation of the system. All digital and analogue incoming and outgoing signals from the field components - like limit switches of the valves, tank level sensors, floating switches, or even local operator panels - are transmitted to I/O units, mounted in the centralized or decentrelized control cabinet(s). All I/O units are controller-based and have an Ethernet interface which provides the maximum number of communication channels and protocols. This keeps the system flexible in all the channels while opening the gate for decentralized designs.

Operator Stations

Specially designed computer-based operator stations operate and monitor the RCV, TLG and AHS systems. For the Engine Control Room (ECR), a class-approved fanless operating Touch Panel IPC (with no keyboard or mouse unit necessary) is available. This panel features flush-mounting on the control cabinet door. Other Operator Stations - for example in the Decks Office - operate with a speciallydesigned desktop computer complete with TFT colour monitor, mouse and keyboard. Each operator station is able to operate in a "stand-alone" mode. A software interlock with password levels is integrated to deny unauthorized access.

The operator / user panels (HMI) are based on a clearly arranged graphical overview. All functions are simple and menu-assisted, which provide maximum convenience to secure and save operations (see below some samples of screenshots).

Tank Level Gauging

Tank Level Gauging and Draft Measurement

BESI Marine´s TLG system is especially designed to gauge filling levels in tanks on-board vessels. To fulfill this task, various types of sensors are necessary. BESI-supplied sensors are specific to the application for which they are designed, because each medium is different in density and chemical aggressiveness to the sensor materials. Thus the sensors have special sealings, housing materials, different membranes and electronic components. The sensors are technology-based on the principle of a pressure transducer with a pre-set pressure range and tuneable output. The technology, basing on relative atmospheric pressure, requires the sensor to be vented. To provide this pressure equalization between sensor and environment, the sensors are equipped with special cables which have a pressure relief line.

Installed in the control cabinet are the analogue inputs (0-20mA) which are fed with the sensor signals presenting the actual medium pressure in the corresponding tank. A software in a PLC (Programmable Logical Controller) will translate the values from the sensors with the help of so-called tank tables into tank content values.

During its calculations of tank contents, the PLC considers medium densities (to be fed in by the system operator) as well as trim and heel corrections of the vessel. The system does not only calculate tank contents but also visualizes them in a very user-friendly manner.

Pressure Sensors

General description

The process pressure / hydrostatic pressure sensors are based on the principle of a transducer with a pre-set pressure range and adjustable output. The sensors can be installed "dry" outside the tank, or "submerged" in medium inside the tank. In both cases, the sensor should be installed approx. 10cm above the lowest bottom area of the tank.

Applications

Ballast water tanks, fresh water tanks, grey water tanks, black water tanks, sludge tanks.
HFO Storage tanks, HFO Settling tanks, HFO Service tanks.
MDO tanks, lube-oil tanks, cooling water tanks.
Draft

Sensor features for pressure transducers: A
Principle: process pressure/hydrostatic pressure
Exactitude: better <0,25 %
Overpressure: at least 25 bar overpressure-safe
Temperatures: body -10 ..+ 100 °C
Materials: membrane is sapphire-ceramic, body 1.4404, sealing FFKM double sealing
Protection: D =IP67 / S= IP 68 , on request ATEX II 2G EEx ia IIC T6
Power supply: 24 V DC, 11 ... 32V
Output: analogue 4-20 mA
Electrical connection: via vented junction box with PG 13,5 cable glands
Approvals: GL, LRS, ABS, CCS, RINA, DNV
Examples of possible sensor installations
Tank Level gauging and Draft measurement for continuous level management

BESI´s Pneumatic Electronic Sounding System (PESS) has been designed as a Tank-Level and Draft sensor system for continuous level measurement on board vessels.

Installation

The versatile PESS sensor system provides measurement access from the top or from the side of the tank. It can be mounted close to or distant from the measuring point. The sensor is connected to the tank via a measuring pipe which is guided into the corresponding tank to a level of approx. 30mm above tank bottom. Approved by Germanischer Lloyd (GL) and ABS, the tank sounding pipes can be used as PESS measuring pipes as well if they are closed airtight to prevent any leakage.

Design benefits

The PESS sensor system consists of a readyassembled and pre-adjusted sensor box with an air-throttle valve, a non-return valve, an electronic pressure transmitter, a stop-cock, and a test connection for testing the sensor even when the tank is empty.

Based on the principle of an air purge system (or "bubble system"), the measuring cell of the pressure sensor never makes contact with the liquids to be measured. The permanent air flow (bubbles) keeps the measuring tube permanently free from fluid and protects the pressure sensor against dirt and heat. This means that the PESS sensor will never be damaged or influenced by adherent sediments. Another important design benefit of the proximity measuring principle is that the medium temperature is totally irrelevant. Service to the system can be done from outside the tank.

Special Features and Adjustments

The throttle valve reduces the airflow to the tank or draft measuring point to approx. 10-20 l/h. The non-return valve - assembled with the gauge head - secures the air-circuit and the pressure transmitter against tank fluid flowing back into the pneumatic circuit in case there is a breakdown in air supply. The signal pick-off is rendered by an electronic pressure transducer with a ceramic sensor cell containing high purity aluminium membrane providing analogue signals 4-20mA which corresponds with the air pressure in the measuring pipe. The sensors are pre-calibrated and available in almost every range : with standard types for 4, 6, 10, 16 or 20m LC (liquid column).

Applications

Ballast water tanks, fresh water tanks, grey water tanks. black water tanks, sludge
HFO Storage tanks, HFO Settling tanks, HFO Service (day) tanks, MDO tanks
Lube-oil, cooling water
Draft

Sensor features
Exactitude: better 0,2 % FR
Overpressure: at least 6 bar overpressure-safe
Temperatures: body -25 ... +80°C, membrane -40 ... +125°C
Materials: membrane AL2 O3 , body stainless steel 1.4305
Protection: IP 68 for pressure transmitter, on request EEx d II, IP 65 for junction box
Power supply: 24 V DC, 11 ... 32V
Air Connection: Cut ring connection 8mm OD to air supply and towards tank
Electrical connection: via junction box with PG 13,5 cable glands, shielded marine cable
Visualization of tank levels

The visualization of tank and draught levels is realized on an existing control panel of the RCV remote controlled valve system, ballast system, ship automation / alarm system, or as a standalone solution on a colour touch panel display. The panels are available from 10.4" up to 19". The TLG system can be used as a stand-alone application or as an integrated solution in the RCV system. The interface to the Alarm & Monitoring System (AMS) and / or ship management system is via RS485 or Ethernet. Both interface types are most common and, furthermore, are highly reliable and flexible.

BESI Anti-Heeling System (AHS)

The BESI Anti-Heeling System (AHS) can either be provided as a stand-alone system or as a sub-system integrated in the ballast control. The AHS provides manual or automatic heel correction to keep the ship on ?even keel? during cargo operation. The heel angle is measured by an inclinometer which generates a signal for the control system initiating the necessary actions to keep the vessel in a horizontal position. In automatic mode, the system operator can pre-select a heel angle of up to three degrees starboard or portside which is kept by the system automatically. The prevailing heel angle is indicated on the panel. However, all operations are interrupted when the heel exceeds five degrees, or when one of the limiting tank level sensors has indicated low or high water level. The AHS usually operates a pair (or multiple pairs) of anti-heeling tanks (portside and starboard) which are connected via cross-pipes. The nominal transfer rate of ballast water from one ballast tank to the other on the opposite side depends on the cross-duct diameter, tank height (max. water-head amplitude) and the capacity of the ballast pump. A stability test system is available as an optional feature, which is considered useful to specify and report the actual stability of the vessel, after discharging and/or loading operations.

AHS Configuration

Approved Design and Installation

The BESI AHS has been designed with flexibility to meet clients´ requirements: to operate as an independent system or as an integrated system with the anti-heeling sub-system incorporated into the ballast control. The multifunctional control system runs on various hardware configurations and can integrate several types of pumps. The flexibility of the system also allows the use of the ballast pump(s) and remote-controlled valves of the ballast system for anti-heeling operations.

Anti-Heeling Pump

The integrated system uses designated ballast pumps and assigned valves for anti-heeling operations. The independent AHS uses a reversible propeller Pump - available in different designs - or a centrifugal pump.
Valves

AHS operating independently from the ballast system requires two remote controlled valves (RCV). Each RCV assembly consists of a butterfly valve and an actuator moving the valve into the desired position.
Tank Level Sensor / Level Switch

For detecting actual tank levels, tank sensors and level switches are needed. If the AHS is designed as an integrated system, the tank levels are determined by the BESIsupplied Tank Level Gauging system. If it is an independent system, the following sensors are provided :

For each Anti-Heeling tank, one pressure Sensor G1-D
For each Anti-Heeling tank, one level switch for detecting minimum water level

Motor Starter for Heeling Pump

Wall-mounted type installation: cabinet designed as DOL or Y/D MCC (Motor Control Centre). The cabinet is equipped with all necessary power distribution and control components.
Anti-Heeling Control Cabinet

Wall-mounted type installation: This cabinet is designed as the dedicated control cabinet and is equipped with all the necessary control components. On the front door, an operator panel is installed for monitoring and operating the system.
Example configurations include

A reversible in-line (tunnel) propeller pump in combination with two remote- controlled valves.
A reversible propeller pump in combination with two remote-controlled valves.
An unidirectional centrifugal pump in combination with a maximum of six remote controlled valves.
The existing ballast pumps (max. two) and the remote-controlled valves. For this application, an online connection to the remote controlled valve system is needed. The recommended standard interface is an Ethernet MODBUS connection (others on request).

Inclinometer

This sensor provides the calibrating input signal for the antiheeling control system. BESI recommends that this inclinometer be installed in the control cabinet which has to be mounted in transversal ship direction. If this is not possible, the inclinometer should be arranged transversally and rigid to the ship?s structure, in a small box near the control cabinet.

Operator Panel

This panel is designed to monitor and operate the AHS from remote position, for example, from the wheelhouse. The panel is prepared for flush mounting into an existing control console.

Stability Test

This feature is optional and comes with a printer for documenting the test reports. The testing procedure is based on the regulations of IMO. RES. A 749 (18) Chapter 7.3.1.

The BESI AHS is designed according to the Germanischer Lloyd (GL) rules and is also typeapproved by GL.

Quick Closing Valves

BESI Quick Closing Valves are designed with multiple execution release cylinders, which allow operation by manual (pulling wire), pneumatic and hydraulic execution. The BESI Quick Closing Valve can be delivered in various material compositions and with various flange drillings. Sizes range from DN15 to DN200 in standard, up to DN500 is possible on request. The BESI Quick Closing Valve release stations are equipped with a breakable window and emergency hammer.

The cabinets are built according to costumer request and therefore are without limitation of execution handles. As an option, the electrical open/close indication can be part of the release station. The release cylinder are designed for manual as well as pneumatic and hydraulic execution.
Following Materials are available:
Body:

Ductile Iron - EN-GJS400-18-LT - (GGG40.3)
Cast Steel - GSC25 - (GP240GH)
Stainless Steel - 1.4301 - (AISI304)
Stainless Steel - 1.4401 - (AISI316)
Bronze - CuSn5Zn5Pb5-C - (RG5)
Bronze - G-CuSn10Zn - (RG10)
Bronze - G-CuSn10 - (GBZ10)

Face to Face dimension according DIN-EN

Drilling according DIN 2501
Flanges according EN 1092/3B

Quick Closing Valve Straight Type

Face to Face EN 558 (DIN 3202 F1) - Flanges acc. to EN 1092-2/B (DIN2501)
Pressure Rating: PN 10 / PN 16 (above disk)
Temperature Range: up to 140°C

Body/Bonnet: EN-GJS-400-18-LT
Disk = DN65: X14CrMoS17
Disk = DN80: X14CrMoS17
Seat: X12Cr13Studs / Bolts: Steel
Pressure class and temperature range
Dimension Dimension Permissible working pressure in bar
Working temeprature in °C till 140°C
DN 15 - DN 100 16
DN 125 - DN 150 16
DN 175 - DN 200 10
DN 250 - DN 600 On request
MA150101
DN in mm ØD in mm L1 in mm H in mm ØR in mm C in mm Weight in kg BESI Part No.
15 95 130 165 120 190 3.9 MA15010101516
20 105 150 165 120 190 4.6 MA15010102016
25 115 160 180 140 190 5.4 MA15010102516
32 140 180 180 140 190 7.1 MA15010103216
40 150 200 215 160 195 9.6 MA15010104016
50 165 230 230 160 195 12.5 MA15010105016
65 185 290 245 180 195 17.6 MA15010106516
80 200 310 295 200 195 21.4 MA15010108016
100 220 350 325 225 195 35.7 MA15010110016
125 250 400 360 250 195 48.2 MA15010112516
150 285 480 425 300 195 72 MA15010115016
175 315 550 495 400 195 91.7 MA15010117516
200 340 600 505 400 195 108 MA15010120016

Quick Closing Valve Angle Type

Face to Face EN 558 (DIN 3202 F1) - Flanges acc. to EN 1092-2/B (DIN2501)
Pressure Rating: PN 10 / PN 16 (above disk)
Temperature Range: up to 140°C

Body/Bonnet: EN-GJS-400-18-LT
Disk = DN65: X14CrMoS17
Disk = DN80: X14CrMoS17
Seat: X12Cr13Studs / Bolts: Steel
Pressure class and temperature range
Dimension Dimension Permissible working pressure in bar
Working temeprature in °C till 140°C
DN 15 - DN 100 16
DN 125 - DN 150 16
DN 175 - DN 200 10
DN 250 - DN 600 On request
MA150201
DN in mm ØD in mm L1 in mm H in mm ØR in mm C in mm Weight in kg BESI Part No.
15 95 90 170 120 190 3.9 MA15010101516
20 105 95 170 120 190 4.6 MA15010102016
25 115 100 180 140 190 5.4 MA15010102516
32 140 105 180 140 190 7.1 MA15010103216
40 150 115 200 160 195 9.6 MA15010104016
50 165 125 200 160 195 12.5 MA15010105016
65 185 145 225 180 195 17.6 MA15010106516
80 200 155 245 200 195 21.4 MA15010108016
100 220 175 275 225 195 35.7 MA15010110016
125 250 200 275 250 195 48.2 MA15010112516
150 285 225 315 300 195 72 MA15010115016
175 315 250 360 400 195 91.7 MA15010117516
200 340 275 360 400 195 108 MA15010120016

Application

Suitable for cold and hot water, oil and other neutral, non-aggressive liquids. Quick Closing Valves are mainly used for sudden blocking of pipe line systems at tanks with combustible liquids. The Quick Closing Valve is equipped with a multi release cylinder for execution by hydraulic, pneumatic or manual operation. Other flanges, material or feedback signal on request.

Hydraulic Spring Return Actuator (Type HSTP - F)

BESI Marine Systems GmbH produces reliable and robust hydraulic single-acting spring return actuators.

Installation

The HSTP-F actuator may be installed in any place - submerged in medium, in dry spaces, on deck, or in hazardous areas.

Position Response

The valve position is determined by limit switches mounted externally on the actuator, or by volume transmitters installed inside the central control unit, such as the solenoid valve cabinet. The BESI volume transmitters are accepted by all major classification societies and are type-approved by Germanischer Lloyd (GL). They provide an inexpensive but very precise and reliable signal transmission and eliminate the need for any electric cabling to the valves. This ensures economic installation even in hazardous areas of a ship.

Emergency Operation

As a unique safety feature, the actuator provides a second independent piston for manual operation. It allows an emergency operation to be undertaken completely independent from the hydraulic circuit ? important in situations where the hydraulic circuit may be defective. For manual operation, a portable hand-pump can be connected to the actuator via a quick connector coupling.
The main advantages of the Type HSTP-F actuators include

Designed to ensure a defined fail-to-safe position - open or closed - even without control power.
Spring Discs instead of spiral springs are used to allow the actuator to operate even with 30% defective springs.
Economical installation - whether as single unit or ready-installed in a system - due to single-line connection. Single-acting ¼ -turn actuators need only one hydraulic supply pipe.
Operation of high oil pressure levels of 100 up to 135 bar, and up to 160 bar on request.
Small, compact overall dimensions.
Wide range of torques. Opening torques range from 190 Nm up to 7.730 Nm and closing torques from 100 Nm to 4050 Nm.

Torques
Type Torque (Nm) Weight (kg)
close open
HSTP 51 - 40/F 100 190 11,0
HSTP 78 - 40/F 170 280 20,0
HSTP 78 - 63/F 420 690 32,0
HSTP 108 - 63/F 750 840 55,0
HSTP 108 - 90/F 1100 2145 72,0
HSTP 156 - 100/F 2025 3865 92,0
HST2P 156 - 100/F 4050 7730 200,0

Hydraulic Double-Acting Actuator (Type HSTP - D)

BESI Marine Systems GmbH produces double-acting hydraulic actuators type HSTP-D.

These are high pressure actuators which benefit from the combination of high oil pressure levels of 100 up to 135 bar - on request up to 160 bar - and small overall dimensions as well as attractive torque rates.

Installation

The HSTP-D actuator may be installed in any place - submerged in medium, in dry spaces, on deck, or in hazardous areas. The actuator needs two hydraulic supply pipes For easy installation, we recommend endless pipes (8 x 0.5 stainless steel) from coil, preferably bundled pipes, comprising two or a multiple of two hydraulic lines.

Position response

Emergency Operation

The actuators are equipped with couplings for quick connection to a portable hand-pump for emergency operation. Actuators in medium have their control blocks for manual control installed outside the tanks, and are connected by hydraulic pipes.
Torques
Type Torque (Nm) Weight (kg)
open close
HSTP 51 - 40/40 280 280 10,0
HSTP 78 - 40/40 450 450 20,0
HSTP 78 - 60/60 1020 1020 25,0
HSTP 108 - 63/63 1590 1590 38,0
HSTP 108 - 90/90 3240 3240 41,0
HSTP 156 - 63/63 4600 4600 66,0
HST2P 156 - 80/80 7500 7500 79,0
HST2P 156 - 100/100 11780 11780 135,0

Hydraulic Linear Actuator (Type HKV)

BESI Marine Systems GmbH produces single acting spring-closing hydraulic linear actuators - Type HKV - which can be fitted to several types of valves (such as globe stop valves, non-return valves, and valve chests).

Function

The hydraulic oil pressure (approx. 75 - 150 bar) moves the valve in the desired position (either open or closed) while the disc springs move the valve in the opposite position even against medium pressure.

Design

HKV-type single acting hydraulic linear actuators combine the advantages of a sleek design with the economic performance of a linear hydraulic actuator that assures reliability in virtually any surrounding.

Emergency operation

The standard design comprises a second piston for emergency operation by a portable handpump. There is also possibility for mechanical operation using a hexagon screw for opening the valve manually. This is available on request.

Additional equipment

The actuator may be complemented either with a mechanical position indicator (for dry mounted valves) or with electric limit switches for open-close position indication. The HKV actuator is available together with a corresponding valve - whether as a non-return valve, a stop-valve with fixed cone, or stop/ check valve with loose cone.

Options

Electric limit switch - with protection class IP65 or IP68
Potentiometer position indication
Assembly with directly mounted electro hydraulic power pack EHPP
Visual position indicator
Special coating

Electro-Hydraulic Power Pack (Type EHPP)

BESI Marine Systems GmbH produces small-sized electro-hydraulic power packs (EHPP) specially for BESI-developed hydraulic ¼ turn HSTP actuators as well as HKV linear actuators. These power packs are usually fitted directly onto the actuator, thus providing a hydraulically independent unit connected to the control cabinet only by electric cabling. For submerged installation, the power pack is mounted just outside the tank - in a dry environment, and connected to the actuator by hydraulic pipes. The EHPP unit is applicable for both doubleacting and spring-return hydraulic ¼ turn actuators as well as spring-load closing linear actuators. Under certain conditions, the unit may be used to serve a small group of actuators via a solenoid valve box - thus piping over long distances can be avoided.

Position response

Valve position is determined by electric limit switches mounted on the actuator, providing position indication to the control panel and also stopping the pump operation.

Emergency Operation

For emergency operation, the EHPP unit is equipped with quick connector couplings for connection to a portable hand-pump.

For actuators installed inside tanks, a control block with couplings is fitted outside tanks nearby and connected to the actuator by hydraulic pipes.

Options

mounting kit HSTP
mounting kit HKV
bracket for separate arrangement
limit switches
Ex-proof version potentiometer

Technical data
Standard / on request
power rating: 0,15 kW; 1450 / 1750 U/min
voltage: 230 V / 400 V three phase alternating current
multifrequency: 50 / 60 Hz
operating pressure: 130 bar, max. 150 bar
hydraulic viscoity: 15 - 46 cSt./40° C
tank volume: 0,5 l
life span: 500.000 cycles at max. operating pressure
type of protection: IP 67 / IP 68
total weight: 7 kg
electric connection: spring acting 11 x 0,75mm², double acting 7 x 0,75mm²
working temperature: -15°C - +60°C max. 80°C
installation: position horizontal, vertical and all others. Final selection to be informed before assembly.

Pneumatic Quarter Turn Actuator (Type PSA)

Within its product range, BESI Marine System GmbH supplies single and double acting pneumatic quarter turn actuators of type PSA. The force transmission is via rack and pinion. Both, single and double acting actuators come along ready assembled with a 5/2 way solenoid valve. To meet marine conditions the actuators are specially coated. Torque levels range upto 7800 NM.

Installation

BESI PSA actuators may be installed in almost any location such as dry spaces, submerged on deck as well as in hazadous areas. For operation all pneumatic type PSA actuators only need one pipe for air supply.

Position Indication

PSA actuators are equipped with either compact O/C limit switches. These can be supplied with IP67 protection class or as Eex proof version. The remote position indication can be visualized and processed in decentralised and compact units or integrated into BESI RCV remote control and automation system.

Emergency Operation

Every PSA actuator is equipped with a quick connection coupling for emergency operation via portable pneumatic compressor (PEC). Upon request, the actuator may also be combined with a declutchable gear for manual operation.

Options

At customers´ choise, BESI PSA quarter turn actuators are available in single or double acting execution.
Standard air suppliy pressure required 8 bar. However actuators suitable for other air pressures´ are available upon request
As a standard actuators come with protection class IP67. However protection class IP68 is available upon request.
ESG limit switch box may be delivered with poly carbonate housing or with aluminium housing. Alternatively inductive proximity switches are also part of the supply range.
BESI type PSA actuators may be integrated into BESI TMS<
Surface protection is in standard BESI blue, but at customers´choise may be changed into other colours or paints.

Torques
Double Acting Actuators
Model Torque at 8 bar air supply
PSA 32 10
PSA 42 17,3
PSA 50 24,6
PSA 63 44
PSA 75 93,6
PSA 85 142,4
PSA 100 221,8
PSA 115 366
PSA 125 481,4
PSA 145 693,6
PSA 160 946,8
PSA 180 1277,3
PSA 200 1775
PSA 240 2980,4
PSA 270 4313,6
PSA 330 7811,9

Single acting actuators are available from 8,4 up to 6081,80 NM

Linear Pneumatic Actuators (Type PKV)

As a highlight of the product range, BESI produces pneumatic linear actuators of type PKV in single acting version. These reliable, robust and enduring actuators are typically installed on seat valves but may also mounted on valve chest.

Installation

BESI PKV actuators are normally supplied with a specified valve as one unit and may be installed in any dry location or on deck. In standard version, the actuator needs 10 bar air pressure supplied from one pipe. The spring return function enables the actuator to move the valve into a defined safe position without air supply.

Valve Position Indication

Upon request, PKV actuators are equipped with a local position indication through limit switch. A visual position indication may be realized. Remote position indication can be visualized and processed in decentralised and compact units or integrated into BESI RCV remote control and automation system.

Emergency operation

In case of air pressure failure, PKV actuators may be operated by a portable pneumatic compressor (PEC).
Option

Electric limit switch with protection class IP67
Valves of different sizes and materials are available
Adaptation to customer valves possible
Surface protection is in standard BESI blue, but at customers´ choise my be changed to other colours and paints.

Electric Quarter Turn Actuators (Type EST)

As part of the product range, BESI Marine Systems GmbH delivers electric quarter turn actuators of type EST. These are reliable, robust and compact actuators that may be used in all dry sections of the ship with a torque range up to 3000 NM. The type EST actuators combine the advantages simple installation,safe and reliable operation and easy control and maintenance.

Installation

BESI EST actuators may be installed in any dry location. The actuator only needs one electric supply cable – which in standard application, is also used for signal transmission. Upon request,the actuators are delivered ready assembled to a valve.

Position response

The EST actuators are equipped with limit switches and a visual local position indicator.For remote indication are potential contacts installed. The remote position indication can be visualized and processed in decentralised and compact units or integrated into BESI RCVremote control and automation system.

Emergency Operation

Every EST actuator is delivered with a built in declutchable gear and hand wheel for local or emergency operation.

Option

At customers choice, the BESI EST quarter turn actuator may be delivered with 230V or 380/400V electric motor
The standard protection class is IP67, protection class IP68 may be delivered upon request. However, we do not recommend to use electric actuators under medium!
The BESI type EST actuator may be delivered as an integral part of the BESI TMS>>BUS system with an installed ASI-bus module.
Painting and coating is in standard BES blue, but may be delivered at customers choise in any other color

Torques

230V AV, 400V AV
Model Rated Torque
EST050 50
EST0100 100
EST0160 160
EST0240 240
EST0350 350
EST0500 500
EST0800 800
EST1100 1100
EST1500 1500
EST2000 2000
EST3000 3000

Electric Linear Actuators (Type ELA)

For specific applications, BESI Marine Systems GmbH delivers electric linear actuators of type ELA. These are reliable, robust and long enduring actuators that may be used in all dry sections of the ship. Torques range up to 3000 NM. These linear actuators are typically used for 2 and 3- way regulation valves.

Installation

BESI ELA electric linear actuator may be installed in any dry location in horizontal or vertical position. The actuator only needs one electric supply cable – which in standard application, is also used for signal transmission. Upon request, the actuators are delivered ready assembled to a valve. The actuator connection to any kind of regulating valve can be realized by adaption of the shaft dimensions.

Position response

The BESI ELA electric linear actuator are equipped with local position indication. Upon request, the remote position indication can be supplied with remote open / close position indication or as continuous remote position indication. The remote position indication can be visualized and processed in decentralised and compact units or integrated into BESI RCV remote control and automation system.

Emergency operation

Every EST actuator is delivered with a built in declutchable gear and hand wheel for local or emergency operation

Option

At customers choice, the BESI ELA electric linear actuator may be delivered with 230V or 380/400V electric motor.
The standard protection class is IP66, however protection class IP67 may be delivered upon request.
The BESI type EST actuator may be delivered as an integral part of the BESI TMS>>BUS system with an installed ASI-bus module.
Painting and coating is in standard BESI blue, but may be delivered at customers choise in any other color.