Type SW 11440
Low power hydraulic pump



The SW high pressure pump is designed principally for operation with water and water-based fluids where limited power is available, but the requirement is for pressure up to 700bars. This pump can be powered by a 0.5 to 0.75 Kw 24v DC motor where only wind or battery power or backup is available.

Ideal for the charging of accumulators on unmanned platforms or for use in remote and inaccessible locations. The SW pump is manufactured from 316 stainless steel to withstand hostile environments.

This pump conforms to Directive 94/9/EC relating to equipment intended for use in potentially explosive atmospheres and is ATEX (ATmosphere EXplosible) certified.
Marshalsea Hydraulics has been assessed by SGS Société Générale de Surveillance SA and certified as meeting the requirements of ISO 9001:2000 for the design, development, manufacture and servicing of hydraulic pumps, relief valves and intensifiers.

Pressure and flow combinations

 
Pump No.		 No. of pistons
and size (ins)		 Theoretical
flow (cc/rev)		 Max pres. (bar)
11440 – 41 3 x 0.250 0.65 690
11440 – 42 3 x 0.313 1.00 690
11440 – 43 3 x 0.375 1.45 690
11440 – 44 3 x 0.437 2.00 690

Material
316 stainless steel. Weight 19 Kg.

Installation

Rotation is bi-directional and the pump may be mounted horizontally or vertically. If vertical mounting is selected, our Technical Department should be consulted.

A suction filter of at least 60 microns should be used, and care should be taken to ensure that the filter is of adequate size and does not cause more than 300 mm Hg depression.
Pipes should be of sufficient size to give not more than 3.70 m/sec velocity in the delivery line and 1.20 m/sec in the suction line.

The suction line should be kept under positive pressure when the pump is stationary to allow priming.

We recommend that the fluid reservoir should be between 50 mm and 3 m above the suction port.