A-P10 type pumps
A-P10 (OH2) pumps are single-stage horizontal process pumps supported on the axis, of typical construction, designed and manufactured in accordance with the latest edition of the API610 standard (ISO 13709) and the ATEX directive.
These pumps are widely used in refineries, petrochemical and chemical plants. They are designed for continuous operation, for pumping various fluids with a wide range of physical and chemical parameters.
Layout & Construction Principles
Centrifugal Single-Stage Process Execution
Centrifugal, single-stage, horizontal, A-P10 (OH2) process pumps designed for difficult operating conditions. The spiral pump body, supported axially, is divided in a vertical plane, the suction port is located in the pump axis, and the discharge port is directed radially upwards.
Advanced Sealing & Heavy-Duty Bearings
The design of the pumps allows for various configurations regarding the type of seal. Externally ribbed bearing bodies with a capacious oil pan accommodate bearings with high load-bearing capacity, in which a shaft with significant stiffness is supported.
Parameters & Construction Limits
Standards & Certifications
API 610 / ISO 13709
Latest editions
Full compliance with the most recent API 610 / ISO 13709 standards for heavy-duty process pumps.
ANSI / ASME & DIN / EN
Connection stubs
ANSI/ASME (#150; #300) or DIN/EN (PN40) connection ports with custom drillings available.
API 682 Mechanical Seals
Latest edition
Chamber designed for seamless cooperation with all API 682 cartridge and component mechanical seal plans.
ATEX Directive
2014/34 / EU
Certified for safe operation in explosive atmospheres and volatile hydrocarbon zones.
Product Features & Key Highlights
Ribbed bearing housings, capacious oil pans
Temperature increase limited to 20 °C, ensuring long lubricant lifecycle.
Bearing durability
Exceptional bearing lifespan rated from 35,000 to 200,000 hours.
Rigid shafts
Shaft deflection up to 0.05 mm, optimal and long-lasting operation of bearings and mechanical seals.
Large stuffing boxes
Compatible with seal cooperation according to API 682, latest edition.
API 610 / ISO 13709
Full compliance with the latest edition of worldwide refining and petrochemical standards.
Body supported in the axis
Maximum operational stability and center-line alignment at high temperatures up to 400 °C.
Spiral collecting ducts (single, double)
Optimized hydraulic volute minimizing radial forces and shaft stress.
Radial Top Outlets
Self-venting design with symmetrical hydraulic load arrangement.
Working slots
Secured with high-hardness replaceable sealing rings for wear resistance.
Material Versions (API 610 Table H.1)
API material classes for A-P10 process pumps engineered for corrosive, toxic, and high-temperature hydrocarbon service:
| Part name | S-1 | S-5 | S-6 | S-8 | C-6 | A-8 | D-1 & D-2 |
|---|---|---|---|---|---|---|---|
| Pump body/cover | CS | CS | CS | CS | 12%CR | 316L AUS | Duplex/Super Duplex |
| Rotor (Impeller) | CI | CS | 12%Cr | 316 AUS | 12%CR | 316L AUS | Duplex/Super Duplex |
| Sealing ring | CI | 12% CR+H | 12% CR+H | 316 AUS+HF | 12% CR+H | 316L AUS +HF | Duplex / Super Duplex + H |
| Shaft | CS | AISI 4140 | 12%CR | 316L AUS | 12%CR | Duplex | Duplex/Super Duplex |
| Bearing housing | CS | CS | CS | CS | CS | CS | CS |
Legend: 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 for sour service.
Application Examples
Order or request sizing for A-P10 type pumps
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