Axially Split Multistage Between Bearings Pumps (API Class BB3)

The model MTB is horizontal, axially split, multistage, single suction, diffuser guide-vane type, centerline support, between bearings process pump.
MTB is suitable for high pressure and a wide range of process applications.

Heavy duty construction is in full compliance with API610
Seal chamber
Seal chamber dimensions are in full compliance with API682 and API610 standards, and dual seals can be installed with our standard seal chamber dimension.
Easy maintenance
Overhaul can be carried out without removing main piping and driver.
High reliability
Opposite impeller multi-stage arrangement reduces thrust force to an optimum level. Diffuser guide vane provides internal radial force balance.
The full-circular construction of the bearing housing and high precision dynamic balance ensure stable operation and long bearing life.

The casing is designed in full compliance with API610 (design pressure, nozzle external force, and moment, etc.).
Appropriate casing gasket can be selected to meet the operating specifications and the specific liquid to be used, assuring reliable sealing performance.
Centerline support design prevents misalignment caused by thermal expansion.
Suction and discharge nozzles are integrally cast with lower half casing, allowing removal of the rotor without removing driver and piping.

Closed single suction multistage impeller is designed to the wide range of specific operating condition with maximum efficiency.
The impeller is dynamically balanced to meet the API610 requirement.
Opposed impeller stage arrangement reduces thrust loads and prolongs bearing life.

Renewable wear rings are furnished.

Precision machined diffuser guide-vane sustains high efficiency and provides radial force balance.

It minimizes shaft deflection for longer bearing and seal life.
Conforms to API610 requirement.

Mechanical seal is applicable to all seal types and plans in accordance with API682 and API610. Upon request, gland packing can be installed.
By using the balance line, seal chamber pressure of both side(coupling and anti-coupling side) is designed to maintain the suction pressure for the mechanical seal.

Full circular bracket construction minimizes vibration of bearing housing. So pump vibration is much lower than the limit of API610.
If high temperature service is specified, suitable cooling system is furnished.