Hawkins, N. (Nehemiah), 1833- · New York : Theo. Audel · leaf 25
he source of supply to a water wheel. Pet-cock. This is an air-cock. See air-cock. Pipe-clamp. A device for connecting one pipe to anotherwithout cutting the pipe and inserting a tee; a pipe-saddleperforms the same office as the above, but for larger pipes. Pitcher Pump. A hand pump which takes its… … Pitcher Pdmp. Plumb-bob. This is a device for test-ing whether anything standsexactly vertical; a plumb-rulecontains a plumb-bob. PlumbBob. Glossary of Pii^np and Hydraulic Terms. VI Pressiirt-reducing Valve. A valve for reducing high boilerpressure to low pressure, for steam heating, etc.
Hydraulic machinery · Pumping machinery
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