March 1, 1918.

THE COLLIERY GUARDIAN.

451

HOPKINSON

BOILER MOUNTINGS & VALVES

FOR HIGH PRESSURE AND SUPERHEATED STEAM.

R.D.S. STEAM TRAP
FOR ALL PRESSURES

as

XRGE

DISCH;

■^"*1

HOPKINSON R.D.S. STEAM TRAP

FIGURE No. 9034.

VALVE & SEAT
OF HOPKINSON

PLATNAM

METAL.

CAST IRON OR

CAST STEEL

DODY & COVER.

RAPID DISCHARGE

OF WATER AND
SHARP CUT-OFF.

NO LEAKAGE.

J. H9PKINS0N t CO. L» HUDDERSFIELD.

LONDON - GLASGOW - EDINBURGH - PARIS
CARDIFF - OLDHAM ■ BLACKPOOL - PETROGRAD

No. 399.