Design

Multistage, radially split, vertical barrel pumps with stage casings and single suction, radial impeller 1st stage is always a suction impeller, inducer is possible .Balance of axial thrust by antifriction bearings, in case of higher diff. pressure axial thrust is compensated by a balance piston/liner. The can is only subject to suction pressure, the installation depth and the length of the can depth and the length of the can depend on NPSH conditions. Same design without can is possible for installation in existing vessels or for installation with flanged connection (see design alternatives,p.8).The bearings the motor lantern are oil-lubricated antifriction bearings with rotation independent automatic lubrication by internal oil circulation. A hydrodynamic radial plain bearing is on the suction side of the pump. In case of extreme installation depths with liquid extreme installation depths with liquid lubricated intermediate bearing.

Stuffing box housing with heart barrier and long cooling zone with cooling or heating connections. Shaft sealed by packed stuffing box or mechanical seal(single, double or tandem seals).Connections for cooling, flushing or sealing liquid. Suction and discharge branches are arranged at 180 degree C above the mounting flange. Other branch positions are possible.

Flanges according to DIN or ANSI, auxiliary connections have G or NPT threads. Drive by flanged motor via flexible coupling.

Direction of rotation anti-clockwise seen from driven end.

Operating data

Sizes DN40 up to 200

Capacities Q up to 800m3/h

Operating H up to 800m

Pressure P up to 10.0MPa

Temperatures T -180 up to +180 degree C

Application range

For pumping clean or slightly polluted, cold or hot, chemically neutral or aggressive liquids

-in refineries

-in chemical and petrochemical plants

-in energy plants

-in cryogenic engineering

-in pipelines

-in offshore industry