Built for the highest expectations: BNA progressive cavity pumps are designed for the high requirements of the oil and gas industry. With their robust, heavy-duty cast housings, they optimally fulfill the requirements of the American Petroleum Institute (API). Corrosion-resistant materials such as Super Duplex are standard.
SAFE Housing sections made from robust, heavy-duty Super Duplex stainless steel, with flange-mounted emptying. The base plate contains a leakage pan to collect the liquid that escapes during maintenance
PRESSURE-RESISTANT All pump parts cast or machined, no weld seams in contact with fluid. Generously dimensioned wall thicknesse and ribbing for high pressure stability, exceptional rigidity and quiet running. High flange loads possible
API-COMPLIANT All parts designed in compliance with API 676, flanges compliant with ASME B16.5, mechanical seals compliant with API 682. Flushing plans compliant with API 682 available as accessories
PARTICULARLY HIGH-QUALITY All parts made from AST material with complete traceability; corrosion-resistant materials compliant with NACE MR0175, or optionally compliant with NORSOK M-630
TIME-SAVING Low inspection requirements and significantly reduced documentation thanks to API-compliant design and avoidance of welding
Technologies, Accessories and Options
Technology
Options
Accessories
Pressure branch
Available with Class 300 or Class 150 flanges. Nozzle loads 2x API 676 standard.
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.
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.
Equal Wall Stator
The stator with uniform wall thickness is used in situations with very high pressures or temperatures.
Stator
Available in a wide range of elastomer materialsand for 6, 12, 24 and 48 bar pressure.
Tie bolts/screw
Corrosion proof, optional available in stainless steel design.
Suction casing
Designed with MACP 50 bar. Casing rotatable in 90° increments. Available with Class 300 or Class 150 flanges. Nozzle loads 2x API 676 standard.
Coupling rod
For power transmission. Improved design, optional special designs available.
Drain Connection
Cast 90° elbow, ¾” class 300 flanged.
Joint connection
Consisting of just 5 components. Power transmission through wear resistant, hardened and replaceable joint parts: easily repaired.
Universal joint sleeve with holding bands
Protects the grease-filled joints from penetration of the liquid pumped, even in case of maximum vacuum or pressure loading. Streamlined design to reduce turbulence and NPSHr.
Mechanical Seal
Fully compliant with API 682.
Lantern
Made of cast stainless steel. Seal chamber dimensions according to API 610.
Standard base plate
Short base plate B with geared motor for all standard applications.
Drive
Reduction gearbox with NEMA or IEC electrical motor.
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.
