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Principals / Partners

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Dennis NAKAKITA Principals/Partners

VALVES & HYDRAULIC SYSTEM ... 

DENNIS NAKAKITA, a manufacturer of Butterfly Valves, Actuators and Remote Control Systems with its own engineering

 

  Since 1973 ...    DENNIS NAKAKITA


DENNIS NAKAKITA was established in 1973 with participation of the Japanese companies Nakakita Seisakusho, CO. Ltd; Nissho Iwai, CO. Ltd and Spanish shareholders, with the Nakakita Seisakusho, CO. Ltd. technical support.

DENNIS NAKAKITA is a manufacturer of Valves & Hydraulic systems with own engineering capabilities and all our products are backed by the quality certificate ISO 9001 certified by Det Norske Veritas. Faithfull to our commitments, our equipment has been also subjected to the quality approval of different Classification Societies and have obtained the quality certificate issued by Det Norske Veritas, Lloyd´s Register of Shipping, American Bureau of Shipping and Bureau Veritas.

DENNIS NAKAKITA appoints MOWE as their Exclusive Distributor and Authorised Service Partner. MOWE is authorised to sell and service all range of Dennis Nakakita products and systems for Oil & Gas, Shipbuilding & Navy, Water and Energy markets.


Product Types

A.  Butterfly Valves

        Rubber Type (Wafer, Lug, Semi-Lug, Flanged Type)

        High Performance (Wafer, Lug, Semi-Lug, Flanged Type)

B.  Actuators (Manual, Hydraulic, Pneumatic)

C.  Remote Control System

D.  Accessories

        Flow Meters (Volumetric) Position Indicator

        Pumps - Emergency Hand Pumps


dennis vlv2

 


A. Concentric Butterfly Valves

Concentrate Butterfly L 80 Valves

Illustrates Concentric Butterfly L-80 Valve


Size range:  DN32-DN1200 (Other dimensions upon request).

Pressure rating:

   -   ANSI / ASME Class 125/150.

   -   ISO PN6 / PN10 / PN16.

   -   JIS 10K / 16K.

Body type:  Wafer, Lug & Flanged types.

Materials:  Different types of Stainless Steel, Cast Steel, Ductile Iron, Nodular, Ni-Al-Bronze. Other material upon request.

Applications:  Refineries, Water Treatment Plants, Desalination Plants, Marine & Shipbuilding.


Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Concentric Design Butterfly valves L-Series

 


B. Eccentric Butterfly Valves

Butterfly Valves are mounted with different actuators which are responsible for operating the valves in their ¼ rotary motion.


Size range:  DN40-DN1000 (Other dimensions upon request).

Pressure rating:

   -   ANSI / ASME Class 125/150/300.

   -   ISO PN6 / PN10 / PN16 / PN25.

   -   JIS 10K / 16K / 20K.

Body type:  Wafer, Semi-Lug, Lug & Flanged types.

Materials:  Different types of Stainless Steel, Monel, Superduplex, Cast Steel, Ductile Iron, Nodular, Ni-Al-Bronze. Other material upon request.

Applications:  FPSO, FSO, Offshore Units, Submarines, Military Ships, Chemicals and Oil Tankers, Dredges, LPGs, Refineries, Petrochemical Plants and other units for Energy & Water markets.

 

Types of Eccentric Valves:

Eccentric Butterfly Valves


Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Hydraulic Actuator Butterfly Valve PCBT-3200

file pdf download acrobat adobe reader 44516    -  Pneumatic Actuator Butterfly Valve ACBT-3294

file pdf download acrobat adobe reader 44516    -  Interlocked-Valves Butterfly Valve

file pdf download acrobat adobe reader 44516    -  Manual Hand Wheel Actuator Butterfly Valve CBT-1200H

file pdf download acrobat adobe reader 44516    -  Manual Hand Wheel Actuator Butterfly Valve AC40 and AC50

file pdf download acrobat adobe reader 44516    -  Manual Lever Actuator Butterfly Valve CBT-1218

file pdf download acrobat adobe reader 44516    -  Control Valves – Butterfly Valves

file pdf download acrobat adobe reader 44516    -  Valves – Control Butterfly Valves

file pdf download acrobat adobe reader 44516    -  High-Performance Butterfly Valve Fire Design Tested according API 607

file pdf download acrobat adobe reader 44516    -  Local Power Unit (LPU) Electro-Hydraulic Pack on Actuator / Valve for Remote Control

 


C. Remote Control System


Valve Remote Control System


The Remote Control System consists basically in two elements:

   -   Hydraulic power unit (just for hydraulic controlled valves).

   -   Solenoid Racks (for Hydraulic or pneumatic actuation).


Hydraulic Power Unit (HPU)

Hydraulic Power Unit (HPU) is designed to supply the motive fluid to the equipment for enabling the operation of the hydraulic cylinders of the valves.

Dennis Nakakita hydraulic equipment´s normally work under a pressure rating from 60 to 80 bar, although they are suitable for a working pressure rating from 40 to 200 according to the requirements and specifications of each customer. Capacity and pressure outside this range are available upon request.


Solenoid Racks (SR)

Solenoid Racks (SR) allow the control and the position signalling of each of the hydraulic operated valves.

The hydraulic system consists of two main lines, one for supplying and the other one for the return of the oil. These two lines link the HPU and the SR, from which two hydraulic pilot pipes come out to each one of the hydraulic actuators of the valves when the operation is double action. When it is single action, there will be just one pipe to each one of the actuators.

 

Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Valve and Actuator Remote Control System

 


D. Accessories:

1. Flow Meters (Volumetric) Position Indicator

The valve position indicator FLOWMETER is a combined unit with mounting surface for directional control valves NG 06 according to ISO 4401. In detail the module consists of a hydraulic manifold, a gear type volume counter and an indicator.

Flow Meter Indicator

Illustrates Valve Position Indicators, FLOWMETER


The Flowmeter position indication devise is designed to locally visualize as well as remotely indicate the position of hydraulically operated butterfly valves. The Flow-meter is a combined unit that consists by a directional valve and it's control modules, together with the hydraulic gear driven components (a hydraulic manifold, a gear type volume counter and an indicator).

This option is particularly convenient when the valve is located in a submerged/non accessible place, or in hazardous areas, avoiding the preparation for the special cabling and the costs involved. In such way, the valve position is obtained by measuring the actual quantity of oil flowing to or from the valve actuator.


Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Flow Meter / Volumetric Indicator

 

2. Emergency Manual Actuator

          Emergency Hand Control for Hydraulic and Pneumatic Actuator DN

The emergency hand control for hydraulic and pneumatic actuators is an optional element that enables manual operation of the valve in the event of an anomaly in the actuator cylinder or lack of motor fluid preventing the valve from operating.

It is fitted on the housing of the actuator on the opposite side from the cylinder and on the same geometric axis, forming a single unit along with it.

The emergency hand control is constructed in two different ways, depending on the operating torque and on the diameter and series of the valves.


Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Emergency Hand Control for Hydraulic and Pneumatic Actuators

 

3. Pumps – Emergency Hand Pumps


Pumps Emergency Hand Pump

Illustrates Fixed and Portable Emergency Hydraulic Hand Pumps


FIXED

The fixed hydraulic hand pumps are usually mounted in the series with the critical valves, e.g.: the sea chest/fore peak tank valve.

-   To be mounted directly on the actuator, on bulkhead or in watertight box on deck.

-   Control valve for directional control.

-   2 x Isolation valves.

-   1 relief valve.

-   1-2 x Manometers for pressure indication.

-   2-20 litre oil reservoir.

-   Dry weight from 7.5 kg.


PORTABLE

The portable hydraulic hand pumps are used for manual override at either the solenoid valve cabinet or the valve location.

-   Connection to Solenoid Valve Cabinet or to emergency blocks mounted on actuator or on deck.

-   Mounted on a frame with wheels for easy transport and operation.

-   1 – 3 meter flexible hoses with quick couplings.

-   1-2 x Manometers for pressure indication.

-   2-5 litres oil reservoir.

-   Up to 250 bar pressure.

-   Dry weight from 6 kg.


Download PDF Catalogue:

file pdf download acrobat adobe reader 44516    -  Fixed Hydraulic Manual Pump Deck Stand for Double Acting Actuator DN600 Valves Drawing

file pdf download acrobat adobe reader 44516    -  Fixed Hydraulic Manual Pump Deck Stand for Double Acting Actuator DN300 & DN65 Valves Drawing 

 

Markets covered:

   Energy

   Oil & Gas

   Navy

   Marine

   Waterworks

●   Power Plants

●   Industrial Industries

 

Download Additional information:

file pdf download acrobat adobe reader 44516    -   Certificates Type Approval Marine API_ABS_DNV-GL_ certs for Dennis Nakakita

file pdf download acrobat adobe reader 44516    -   Butterfly Valve with PCBT3200 Hydraulic Double Acting Actuator

file pdf download acrobat adobe reader 44516    -  Globe Valve Class150 Drawing

file pdf download acrobat adobe reader 44516    -  Hydraulic Cylinder for Gate Valves

file pdf download acrobat adobe reader 44516    -  Dennis Nakakita Ball Valve, Globe Valve, Valve

 

 

Contact us at  This email address is being protected from spambots. You need JavaScript enabled to view it.  for more product information.