Multi-turn hydraulic actuator（screw down）

I Outline

In accordance with solas. The valve operation mechanism of fore peak ballast tank inner side installed screw down valve (globe or gate valve) is changed from previous piston type and /or rack& pinion linear type to screw down type. The multi-turn hydraulic actuator is our company’s independent research and development of such functional product.

The screw down (multi-turn) hydraulic actuator can be installed directly on the gate valve, globe valve and   so on ; By using spiral bevel gears and thrust ball bearing. So it can run smoothly and have high output torque, low noise and high efficiency. It can avoid from water proof & oil leakage as sealing glands are used at all the through part. And the protection grade can be IP65(special manufacturing can beIP68).

This product can become screw down electro-hydraulic actuator which the screw down electro-hydraulic actuator have the advantage of small volume, fast running speed and more stable operation than the electric actuator.

II Charcteristics of the motor

- The output shaft with the deep groove ball bearing, can bear certain axial force and radial force;

- With the axial oil distribution structure, it is of samller size and less weight;

- With two inner check valves, no drain connection;

- With cycoid group with the roller, it has a small friction and high mechanic alefficiency

III Specifications

IV Mounting Connection And Specification Of The Screw Down Hydraulic Actuator

1.Screw Down Hydraulic Actuators without handwheel

1）Mounting Connection And Dimension

       Notes： Intermittent operation the permissible values may occurfor max.10% of every minute

2.Screw   Down Hydraulic Actuators with handwheel

1）Mounting Connection And Dimension

Notes：Intermittent operation the permissible values may occur for max.10% of every minute

V Screw down hydraulic actuator driving unit and control panel

1.Hydraulic Power Unite：

Hydraulic power unit of choose electro-hydraulic power unit and the manual

remote control power unit, they give the hydraulic actuator for driving a

hydraulic pressured oil

2. Emergency Operating Set (Option)

Screw down hydraulic actuator can choose assembly emergency hand pump interface, under the state of emergency can realize local manual operation.

3.   Control Panel

-Control panel controls the valve’s open or close.

-Control panel has built in indicating lamps showing valve position(Open/Close).

-Additional mechanical valve positioning indicatorcan be monitored with 0~100% full indication.

VI Screw down hydraulic actuator usedfor

1. DN250/PN10 Screw down hydraulic globe valve

2.DN300/PN10 Screw down hydraulic gate valve

Multi-turn Hydraulic Actuator（Download）