Centrifugal with volute pump NMT

for hydrocarbonsoilfor chemicals

Overview
The NMT is a volute casing submersible pump with shaft sealing based on the two-pipe pump principle (separate shaft sealing pipe and pressure pipe). The hydraulic pump section is installed in the container or directly in the pumped medium. Connection is made via a multi-stage shaft and pipe string. Submersible lengths up to 6 meters and flow rates up to 1000 m³/h (≈4400 gpm) are possible. The pump features a permanent magnet coupling; the containment shell hermetically seals the fluid to the outside. Direct mounting of the drive motor eliminates additional bearings and a mechanical coupling.

Applications

• Oil & gas
• Chemistry
• Petrochemistry
• Offshore
• Ship technology / Marine
• Refueling equipment & Aviation
• Tank storages / Tank farms
• Renewable energy / Environmental engineering

Notes

• * Higher pressures and temperatures on request
• ** Depending on size and speed

Technical specifications

• Type: volute casing submersible pump with magnetic coupling
• Design principle: two-pipe pump (separate shaft sealing pipe and pressure pipe)
• Flow rate (Q max): up to 1000 m³/h (≈4400 gpm)**
• Head (H max): up to 250 m (≈820 ft)**
• Operating pressure: 16 bar (232 psi)*
• Temperature: up to 200 °C (392 °F)*
• Max rotational speed: 3500 rpm
• Sealing: magnetic coupling (hermetic containment shell)
• Installation: vertical, submersible
• Self-priming: no
• Bearing: plain bearing
• Lubrication: grease
• Materials: duplex, Ni-based alloys, spheroidal graphite iron / cast steel, austenitic stainless steel
• Standards: DIN EN ISO 2858, ISO 15783
• Explosion protection: category 1 / zone 0
• Submersible length: up to 6 meters (depending on configuration)