THE OLD DAYS: A Ravenswood street scene around 1900, probably photographed from the London North poppet head
. Buildings visible from left to right include: Court house, post office, Browns Hotel, Imperial Hotel in distance, Thorps Buildings, Thorps Mining Exchange, New Ravenswood Hotel and the Railway Hotel.
For greater efficiency, the valve is engineered with contoured valve seats, operating with specially-shaped poppet heads
to provide maximum flow through the valve seat and guard.