The BNM pump is a large standard pump equipped with smart maintenance solutions. A system known as Rotor Joint Access facilitates quick maintenance of the rotor, stator and mechanical seal via a sliding housing section. Drive Joint Access additionally allows the entire drive and coupling rod unit to easily be removed from the rear of the suction casing, thus permitting effortless maintenance of the drive-side joints.
EASY MAINTENANCE Maintain-in-Place without removal of piping or dismantling the entire pump
COST-EFFECTIVE Significant reduction in maintenance costs. No need for disassembling joints with laborious assembly and dismantling of retaining straps. Simple removal of clogged fibrous material
PREVENTIVE No unscheduled downtime thanks to simplified preventive inspection and maintenance of the joints
HIGH SYSTEM AVAILABILTY Fast maintenance of rotor- and drive-side components for trouble-free operation
Technologies, Accessories and Options
Technology
Accessories
Options
Pressure Branch
With gauge connection. Flange connections alternatively to DIN or ANSI.
Rotor
Wear resistant and corrosion-proof materials.
Conventional geometry
With short pitches and a compact design, the conventional geometry produces high pressures.
6L geometry
With a small rotor diameter and a long pitch, the 6L geometry attains lower surface velocities and extends the service life due to its large sealing line.
Tricam geometry
The rotor with Tricam geometry features a three-helix geometry. This enables it to achieve larger conveying capacities with the same overall length of the pump.
Stator
The seal on both ends is moulded as an integral part of the elastomeric stator; corrosion of the stator tube is never a problem because the pumped liquid never comes into contact with the metal tube or the bonding adhesive. Available with optional adjustable stator retensioning device.
6L geometry
With a small rotor diameter and a long pitch, the 6L geometry attains lower surface velocities and extends the service life due to its large sealing line.
Tricam geometry
The rotor with Tricam geometry features a three-helix geometry. This enables it to achieve larger conveying capacities with the same overall length of the pump.
Conventional geometry
With short pitches and a compact design, the conventional geometry produces high pressures.
Rotor Joint Access (RJA)
Sliding separate casing with enlarged cross section ensures quick and easy maintenance.
Separate rotor connection
Allows to separate rotor without dismantling joints. Axial space for dismantling rotor/stator without removing pipes.
Rollers
Simplifies the handling of the casing element.
Suction casing support
Holds suction casing in position when lantern is removed.
Drive Joint Access (DJA)
Quick and easy access to the drive sided joint.
Drive unit
Can be removed from the rear of the suction casing to maintain the drive sided wear parts
Drive
Geared motors, variable speed drives or frequency controlled motors of all major manufacturers, directly flanged to the pump without additional couplings or guards. Covers made of stainless steel are available.
Overpressure Protection
The pressure gauge switches off the pump as soon as a pre-set pressure is exceeded or not reached and protects the pump from increased wear and tear or piping damage.
Dry-running protection device (TSE)
TSE monitors the temperature of the rotating stator and shuts down the pump when the limit value is reached to protect the pump from dry running.
Seal barrier system
This unit protects the shaft sealing by selectively supplying barrier liquid. Also available with flow meter on request.
Base plate API 676
Particularly robust design with integrated drip tray; base plate for applications in the oil and gas industry.
Standard Gland Packing
Universal seal for hopper and standard pumps for sealing the plug-in shaft and suction casing or feed hopper. Also available with grease or lantern ring to shut off the media flow. Can also be supplied with upstream labyrinth seal and additional flush connection or lubricating device.
Single-acting mechanical seal
Universal standard mechanical seal for dosing, food applications and semi-submersible pumps for sealing the plug-in shaft in the suction casing or the hopper.
Multiple-acting mechanical seal
Mechanical seals arranged in a row. Available in "back-to-back", "face-to-face" or "tandem" sequence.
Cartridge mechanical seal
Ready-to-install pre-assembled units with supply connections and attachment brackets for quick replacement.
USA (EN)
