Booster pump
The booster pump has been designed to charge high pressure cylinders from low
pressure cylinders with larger volumes. The medium may be compressed air or
oxygen. Typically the high pressure cylinder may be charged to 3,000 psig (205
atmospheres - 211kg/cm2). The donor cylinder may contain air or oxygen at a
pressure as low as 600 psig (41 atmospheres - 42kg/cm2).

Single cylinder booster pump – Hand
operated.
57 delivery valve
61 piston valve
83 inlet pressure gauge
84 separator
86 drain valve
101 drier body containing desiccant
106 delivery pressure gauge
The unit is a water sealed
reciprocating pump and comprises a single cylinder charged with distilled water
so the piston, glands and valves are all water sealed. On the upstroke of the
piston a fresh charge of gas is drawn through the non return inlet valve whilst
the previous charge is forced through the delivery valve {57} into the upper
chamber. As the piston travels to the top of its stroke it lifts the delivery
valve off its seating allowing some of the water in the upper chamber to flow
down into the cylinder thus sealing the piston.
As the piston descends the delivery valve closes, sealing off the upper chamber,
and the gas in the lower half of the cylinder passes through valve {61} in the
piston and through the water sealing the piston.
From the upper chamber, the gas passes through the separator {84}, in which
moisture in suspension is removed by condensing onto the metal filling and
draining back into the pump chamber.
As well as the hand operated version there is an electric driven version
operated by a 1hp single phase motor.
The weight of the hand operated version is 84 lbs (31.4 kgs)
The weight of the motor driven version is 260 lbs (97 kgs)

Hand operated single cylinder booster pump.
Manufactured by Siebe Gorman & Co Ltd at Cwmbran
For our scuba diver visitors, You may have come across the modern version of
this pump known as a gas recovery pump by the
name of the Haskell Pump often used on dive boats to minimise the loss of oxygen
and helium thereby keeping the gas price down.
Please email a photo and a description to info@divingheritage.com
Copyright © by Diving Heritage 2008