POMPA
API 610 / ISO 13709Process Pumps
OH2 type process pumps designed to the requirements of API 610 12th Edition (ISO 13709) for heavy-duty applications in the petroleum and chemical industries and in power plants.
API 610 OH2 for heavy duty
API 610 OH2 type pumps, designed for heavy-duty applications in the petroleum and chemical industries and in power plants, are optimised for high reliability, long service life and safe operation.
Can be used safely for the transfer of diesel fuel, fuel oil, petrol, kerosene, liquefied petroleum gas (LPG), lubricating oils, paraffin and similar hydrocarbon-derived fluids.
Designed to meet all the requirements of the API 610 12th Edition and ISO 13709 standards. As a result, it offers a reliable solution, compliant with global standards, for critical processes such as refineries, petrochemical plants and power plants.
Pmax: Suction pressure + the pressure corresponding to the shut-off head. The pump material varies depending on the type of liquid pumped and on the operating temperature and pressure; please contact us for detailed information.
OH2 design suitable for heavy duty
Centreline-mounted casing design
Minimises misalignment caused by thermal expansion at high temperatures and extends bearing and coupling life by maintaining axial and radial alignment.
Tangential discharge
Optimised for maximum hydraulic efficiency and low vibration. In special applications, radial forces can be balanced even further with the double volute casing option.
Back-pull-out design
Allows the bearing bracket, stuffing box, pump shaft and impeller to be removed as a complete unit without dismantling the pipework. With the optional spacer coupling, the rotor assembly can also be removed without moving the electric motor.
Flange and casing design
The suction and discharge flanges are sized in accordance with the flange forces defined in API 610.
Pump flanges are manufactured to ANSI/ASME standards as standard.
360° view on the skid
Rotate the OH2 pump as a complete package on its skid, together with its motor, coupling and auxiliary equipment, by dragging or with the arrow keys.
Design details for a long service life
From sealing to lubrication, from balancing to condition monitoring; for safe and uninterrupted operation in critical processes.
Casing sealing is provided by spiral wound gaskets fitted so that they cannot be displaced under pressure.
For high-temperature operation, cooling fins on the bearing housing and special packing cooling systems are used.
Shaft and bearings sized for heavy-duty conditions.
All impellers are dynamically balanced in accordance with ISO 1940 grade 2.5.
Supplied with temperature and vibration monitoring systems to facilitate predictive maintenance.
The constant level oiler allows the oil level and condition to be checked; oil rings assist lubrication while preventing foaming.
The baseplate, designed in accordance with API 610, provides high rigidity to the entire system.
The seal chamber has API 610 (ISO 13709) standard dimensions; any type of mechanical seal conforming to API 682 (ISO 21049) can be fitted.
API 610 material classes
The material of the casing, rotor and sealing parts is determined by the API 610 class selected according to the type, temperature and pressure of the pumped liquid.
Scroll the table sideways to see all classes →
| Part | API 610 material classes | ||||
|---|---|---|---|---|---|
| S-5 | S-6 | S-8 | C-6 | A-8 | |
| Casing | |||||
| Volute casing | Carbon Steel | 12% Chrome | 316 SS | ||
| Casing wear ring | 12% Chrome | 12% Chrome | 316 SS | 12% Chrome | 316 SS |
| Casing gasket | 316 SS Spiral Wound | ||||
| Casing stud / nut | AISI 4140 | ||||
| Rotor | |||||
| Impeller | Carbon Steel | 12% Chrome | 316 SS | 12% Chrome | 316 SS |
| Impeller wear ring | 12% Chrome | 12% Chrome | 316 SS | 12% Chrome | 316 SS |
| Impeller nut | Steel | 316 SS | |||
| Shaft | AISI 4140 | 316 SS | 420 SS | 316 SS | |
| Sealing | |||||
| Seal chamber | Carbon Steel | 12% Chrome | 316 SS | ||
| Throttle bushing | 420 SS | 316 SS | 420 SS | 316 SS | |
| Bearing bracket | |||||
| Bearing housing | Carbon Steel | ||||
| Outer bearing cover | Carbon Steel | ||||
| Inner bearing cover | Carbon Steel | ||||
| Lubrication ring | Bronze | ||||
| Inner labyrinth seal | Bronze / Viton | ||||
| Outer labyrinth seal | Bronze / Viton | ||||
Stainless and chrome steel options are highlighted. Contact us for detailed material selection.
Complete package on a skid
