- Vibration Monitoring
- Industrial Communications
- PLC & I/O Cards
- Automation Accessories
- Controllers & Data Acquisition
- AC Drives
- Industrial Computers
- Encoders
- Isolator & Barrier
- Safety Switches & Guard Locking
- Automation Software
- HMI Displays
- Motor Soft Starters
- Servo Drives
- CCTV & Security
- Robotics
- Pneumatic Cylinders
- Machine Vision
Brand: KSB
KSB RPHd Double-Suction BB2 Process Pump to API 610
Description
Double-suction between-bearings pump for high flow rates
The KSB RPHd is a double-suction, single-stage heavy-duty BB2 process pump to API 610 / ISO 13709. A double-suction impeller feeds the eye from both sides, which balances axial thrust and lowers the NPSH required, so the design suits high-flow refinery, petrochemical and offshore duties. KSB lists refineries, petrochemical and chemical industries, and onshore and offshore processes.
The pump combines a double volute with a double-suction impeller and, as in the other RPH variants, KSB quotes better efficiency and NPSH values than OH2 pumps.
Technical specifications
| Parameter | Specification |
|---|---|
| Manufacturer | KSB SE and Co. KGaA, Frankenthal, Germany |
| Type | RPHd, double-suction, single-stage, heavy-duty BB2 process pump |
| Standard | API 610 / ISO 13709 |
| Flow rate, 50 Hz | Up to 5100 m3/h (22455 US gpm) |
| Flow rate, 60 Hz | Up to 6000 m3/h (26417 US gpm) |
| Head | Up to 550 m (1804 ft) at 50 and 60 Hz |
| Temperature | -80 to +450 C (-112 to 842 F) |
| Pressure | Up to 80 bar (1160 psi) |
| Nominal diameter | 100 to 400 mm (4 to 16 in) |
| Materials | S5, S6, S8, C6, A8, D1, D2 and special materials |
| Bearings | Heavy-duty paired 40 degree angular contact ball bearings; oil ring lubrication with labyrinth seals as standard; hydrodynamic bearings optional |
| Seal | Mechanical seals to API 682, cartridge design; coolable or heatable seal housing |
| Other values | On request |
Design features
The top-top flange arrangement allows easy monitoring and servicing, and the suction-side casing cover simplifies rotor removal. Wear rings on casing and impeller can be replaced and the modular design reduces spare parts stock. A reinforced, optimised shaft gives a robust design, and integrated cooling fins with an optional fan impeller cool the bearing brackets without a separate cooling circuit.
Choosing between RPH variants
The RPH family covers three layouts in this range: the single-stage OH2 RPH, the two-stage RPHb and this double-suction RPHd. As a guide taken from the leaflets, RPHd reaches the highest flow (up to 6000 m3/h) while RPHb reaches the highest head (up to 800 m); a duty that needs both may require a different pump family. KSB supplies a hydraulic selection chart for each.
Documents and quotation
Provide flow, head, NPSH available, fluid, temperatures, material class, seal plan and driver. Confirm the leaflet edition (03.24) with current documentation for your project.
The attached KSB leaflet is the manufacturer document for the RPHd and lists the technical data used above. Seven Star LLC, an independent supplier in Muscat, quotes KSB pumps against your duty data. Browse Pumps for related equipment, or compare with the KSB Omega axially split volute casing pump.
Datasheets & Documents
- Brochure KSB RPHd double-suction BB2 process pump leaflet (EN, KSB, 03.24) Download
Reviews (0)
About brand
Pumps and valves have been the whole business of KSB since 1871, and the Frankenthal company's type series names are a fixture on nameplates in water, building services, energy and process plants. Seven Star LLC lists KSB pump families including Etanorm, Movitec, Multitec and Omega, and supplies KSB pumps and spare parts to operators and contractors in Oman and the GCC, matching each request to the manufacturer's documentation.
KSB pump series we list
- Etanorm: horizontal single-stage volute casing pump with ratings and main dimensions to EN 733, back pull-out design, replaceable casing wear rings.
- Movitec: vertical multistage high-pressure pump in ring-section design, with suction and discharge nozzles of the same diameter in line.
- Multitec: multistage ring-section pump for horizontal or vertical mounting, built in materials from cast iron to duplex stainless steel.
Ordering KSB pumps and parts: what we need
For a spare part, send the type series and size, the KSB order number and serial number from the nameplate, and the part number from the sectional drawing. For a new pump, give flow, head, liquid, temperature, suction conditions, material preference, and motor voltage and frequency. Mechanical seal code and impeller diameter matter on replacements, because one pump size is built in many variants.
Browse KSB products by category: Pumps.
Related products
Frequently Asked Questions
What makes the RPHd double-suction?
The impeller takes fluid from both sides, which balances axial thrust and lowers NPSH required.
What is the maximum flow?
Up to 5100 m3/h at 50 Hz and 6000 m3/h at 60 Hz.
Which pressure is listed?
Up to 80 bar.
What nominal diameters are covered?
100 to 400 mm (4 to 16 in).
How is the bearing bracket cooled?
By integrated cooling fins and an optional fan impeller, with no separate cooling circuit.
Reviews
There are no reviews yet.