August 25, 1916.

THE COLLIERY GUARDIAN.

371

is

It speaks for itself

o
z
Id

GALLONS PER MINUTE

Id

p

1000

SO-

70-

60

1100

Id

Id

Lu

Z 1050

O

<
Id

500

■400
X
-300 cn

690	700	830 SOO 1000 HOC







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Pumping Plant in a Colliery Pumproom 1,050 feet below
Three units each delivering 50,000 gallons per hour to the
Efficiency of Pumps, 79 per cent. Speed, 1,485 revs, per
Motors work at 5,500 volts.

surface,
surface,
minute.

Write for List No. 736

Pulsometer engineering C0.12

OFFICES :

WORKS:

11, Tothill Street,

Nine Elms Iron Works,

LONDON, S.W

READING

SaKuSBOUtJh.