Casing split studs and cap nuts (round body, hex drive on top), jacking screws, gland studs, bearing housing bolting, coupling bolts, flange studs, hold-down bolts, taper dowels and anchor bolts, made in Houston to your drawings and specifications.
A 6 × 8, six-stage API 610 type BB3 pump (8-inch suction, 6-inch discharge, Class 900 nozzles) of the kind used for pipeline, boiler feed and water injection service, on its baseplate with motor and spacer coupling. It comes apart the way a pump shop does it: coupling spacer out, nozzle flanges and balance line open, bearing housings drawn off, seal gland plates back, then the cap nuts (round body, hex drive on top) spin off the long row of casing studs and the upper half lifts away, leaving the studs standing in the lower half. The rotor, with its six opposed impellers, wear rings and centre bushing, lifts straight out; the hold-down bolts, dowels and anchor nuts come last. The bolting we make is in colour. Press Solid view for a steel model, or Cutaway to open the upper half and see the rotor inside.
A long row of large studs set in the lower casing half, each with a tall cap nut (round body, hex drive on top) standing proud of the upper flange: the pump's main pressure joint. The studs stay in the lower half when the upper half is lifted.
Jacking screws in the upper flange break the joint once the nuts are off; taper pins put the upper half back in the same place.
Twelve 1-3/8 in. studs on a 15-1/2 in. bolt circle (ASME B16.5 Class 900, NPS 8), each with two heavy hex nuts.
Twelve 1-1/8 in. studs on a 12-1/2 in. bolt circle (ASME B16.5 Class 900, NPS 6), each with two heavy hex nuts.
Eight 7/8 in. studs on a 6-1/2 in. bolt circle at each end of the balance line (ASME B16.5 Class 900 / 1500, NPS 2).
Four studs and nuts in each seal chamber face, holding the cartridge seal's gland plate at each end of the pump.
Four studs and nuts bolt each bearing housing to the saddle on the lower casing half; dowel pins keep the rotor centred.
Hold the inboard and outboard covers on the radial and thrust bearing housings.
Eight per disc pack on the spacer coupling. With them out the spacer lifts away and the motor stays where it is.
Two bolts through each casing foot into the pedestals, and a taper dowel in each drive-end foot to hold the alignment.
Cast into the foundation, eight a side, each with a nut and washer on the baseplate flange.
Split-case pump bolting to your drawing, casing joint to anchor bolts. Send us your drawings and material spec.
Request a quote832-446-3442A generic 6 × 8 six-stage BB3 pump, not any maker's design. The suction, discharge and balance line flanges, their studs and gaskets follow ASME B16.5 and B16.20 (Class 900); the take-apart order, the four studs on each bearing housing and each seal gland, and the taper dowels in the drive-end feet follow published BB3 practice. The casing, rotor, impellers, seals, bearing housings, coupling, motor and baseplate are illustrative typical proportions, and the casing split, jacking screw, end cover, coupling, hold-down and anchor bolt counts and sizes are typical. Your drawings govern. We manufacture to your drawings and specifications.
Drawn to ASME B16.5 (Class 900 nozzle and balance line flanges and their studs), ASME B16.20 (flange gaskets) and the API 610 type BB3 layout, with the take-apart order of published BB3 maintenance manuals.
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