Layout
Horizontal, centrifugal, multistage pumps with rotating unit bearings on both sides of the shaft. Depending on the purpose and operating conditions, BB4 designs have feet located at the height of the pump axis or at the bottom of the body.
The location of the pump stubs is directed upwards. To balance the axial thrust, there are design variants with a relieving disc, a relieving drum or two-way rolling thrust bearings. Radially, the shaft is supported on rolling bearings or two radial plain bearings, depending on the design.
The design of the pumps also allows for various configurations regarding the type of seal.
parameters
Capacity: Q = up to 2000 m3/h
Lifting height: H = up to 2600 m
Design pressure: p = up to 320 bar at t = 20 °C
Temperature: t up to 230 °C
Discharge ports: Dn = from 25 mm to 350 mm
standards
API 610 / ISO 13709 (latest editions)
ATEX Directive 2014/34/EU
ANSI / ASME (#600; #900; #1500) or DIN / EN (PN110; PN150; PN320) – connection ports
API682 (latest edition) – mechanical seals
Certifications
API 610 / ISO 13709
last editions
ANSI/ASME (#600; #900; #1500) or DIN/EN (PN110; PN150; PN320)
connection stubs
API682 (latest edit)
mechanical seals
ATEX Directive
2014/34 / EU
Product features
- Working slots: Secured with replaceable, high-durability sealing rings
- Sealing of bodies and rings: metal/metal interstages
- Stuffing boxes: Compatible with seal cooperation according to API682, latest edition.
- First stage rotor: with better suction properties – improved NPSHr
- Hydraulics optimization: To maximize pump efficiency
- Rigid shafts: Optimal and long-lasting operation of bearings and mechanical seals
- API 610 / ISO 13709: Full compliance with the latest edition of standards
- Body supported in the axis: Guaranteeing maximum operational stability at high temperatures
- “Axial Force Balance Optimization” When using various design variants of relief and bearings - relief disc, relief drum, relief holes, thrust bearing
- Superbolt: Possibility of using multi-screw tensioners (reduction of torsional stresses on tie rods, even tightening, possibility of assembly and disassembly without the need to use specialized tools
Material versions
(materials according to API610 Table H.1)
|
API material class |
||||||
| Part name | S-5 | S-6 | S-8 | C-6 | A-8 | D-1 and D-2 |
| Pump body/cover |
CS |
12%CR | 316L AUS | Duplex/Super Duplex | ||
| Rotor / vanes | CS | 12%Cr | AU$316 | 12%CR | 316L AUS | Duplex/Super Duplex |
| Sealing ring | 12% CR+H | 12% CR+H | 316 AUS+HF | 12% CR+H | 316L AUS +HF | Duplex / Super Duplex + H |
| Shaft | AISI 4140 | 12%CR | 316L AUS | 12%CR | Duplex | Duplex/Super Duplex |
| Bearing housing |
CS |
|||||
CI–Cast iron; CS–Cast steel/carbon steel; AISI 4140–alloy steel; 12% CR – cast steel/chrome steel; 316 AUS–Cast steel/austenitic steel >2% Mo; +H–hardened; +HF–hard faces
Possibility of making other alloys, including NACE-compliant materials.
W and HV work area
Z and YS work area
High pressure and high temperature applications in various industries:
- Refining, production and distribution of crude oil
- Petrochemical and chemical industry
- Water squirt
- Power supply to steam boilers in power plants and combined heat and power plants
- Reverse osmosis
