Chemical Process BB4 Type Multistage Pump

- Operating Parameters
Discharge nozzle sizes: 1 to 16 in, or 25 to 400 mm.
Flowrates: 15 to 11450 gpm, or 3 to 2600 m3/h, or 50 to 43300 lpm.
Heads: 10 to 820 ft, or 4 to 250 m.
Discharge pressures up to 720 psi, or 5 Mpa, or 50 bar.
Temperatures: -110 to 840 ° F, or -80 to 450 ° C.

- General description:
Standard structure type:
OH1: Foot-mounted, radially split horizontal single-stage overhung pump.
OH2: Centreline-mounted, radially split horizontal single-stage overhung pump.
OH3: Vertical in-line single-stage overhung pump, with separate bearing brackets, flexibly coupled.
OH5: Close-coupled vertical in-line single-stage overhung pump, with impeller mounted directly on the motor shaft, self-priming function available.
BB2: Radially split horizontal single-stage between-bearings pump, balanced suction or dual suction available.

BB4: Single-casing radially split horizontal multistage between-bearings pump, also called ring-section pump, segmental-ring pump or tie-rod pump, with even symmetry arrangement or axial symmetry arrangement for the best purpose of eliminating axial force, and non balancing drum design for high power efficiency.

VS2: Wet pit (submerged), vertically suspended single-casing volute pump with discharge through the column.
VS4: Wet pit (submerged), vertically suspended, single-casing volute line-shaft driven sump pump.
VS5: Wet pit (submerged), Vertically suspended cantilever sump pump.
Fully casted closed impeller dynamically balanced to ISO 1940-1 grade G2.5.
Replaceable wear rings.
API 682/ISO 21049 standard cartridge type single or dual shaft sealing system equipped.
Seal flush conformed to API 682/ISO 21049 standard plan and specified by clients.

Piping and appurtenances in accordance with API 614/ISO 10438.
Suction and discharge flanges in compliance with ANSI B16.5 or specified separately.
Jacketed bearing housing available.
Cooling water and lubrication system (if used) as per API 610/ISO 13709 Annex B.
API 670 standard or customized vibration and temperature detecting system available.
Coupling in accordance with ISO 14691, API 671/ISO 10441 available.
Non-sparking coupling guard available.
Coupling/bearings/seal and rotor are removable without disturbing the motor or the suction and discharge piping (Back pullout design).
Motor terms defined by customers.

Other features:
Dual volutes design for low radial force effect (while discharge bore ≥ 3 in or 80 mm, except multistage pumps. ), SKF® Or other high performance bearings equipped.
- Note: User-defined (non-standard) parts are available (e. G. Not the API 682 standard mechanical seal but a dynamic expeller and static packing combined seal system, semi-open or open Impeller, etc. ).