Mechanical · M-28Z3M

Volume Pump with VFD Piping Detail

Materials

Steel

Elements

Floors / Slabs Bracing Drainage Connections / Plates

Connections

Welded Connection Bolted Connection

About this detail

This mechanical detail shows an inline volume pump assembly equipped with a variable frequency drive, suspended from the structure using a channel frame, pump base bolts, and a minimum of four all-thread rods with vibration isolators. The piping configuration incorporates weld neck flanges, pump flange taps, single-sphere flexible connections, reducers, and a minimum twenty-four-inch spool piece or five pipe diameters upstream. Flow control and maintenance components include a silent non-slamming flanged check valve, lug-style butterfly isolation valves with gear operators, a wye strainer with a blowdown valve, and a three-quarter-inch drain with a ball valve, hose adapter, and cap. Instrumentation includes half-inch P/T ports, half-inch ball valves, half-inch instrument piping, and liquid-filled pressure gauges with needle isolation valves located at a maximum of five feet above finished floor. Gauge taps in the pump and strainer are permitted in lieu of thread-o-lets for pressure gauges. Suspended inline pumps are limited to a maximum size of five hundred pounds, with heavier units requiring base mounting.

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