NACE MR0175 Sour Service High Speed Centrifugal Pump CRA Clad API 610 OH6
Sour service is unforgiving. Wet H2S streams cause sulfide stress cracking in ordinary steels, so equipment bound for sour hydrocarbon duty must be engineered for the environment and documented against NACE MR0175 requirements. This CRA clad pump is built for exactly that condition.
Fitted with corrosion resistant alloy wetted parts and hardened seal faces, this integrally geared API 610 OH6 machine handles high-head sour hydrocarbon process duty without the cracking and corrosion risk of standard materials.
The high speed centrifugal pump core uses a precision-ground gearbox, a balanced vertical rotor and low-NPSHr inducer to maintain stable suction performance in two-phase-prone sour streams. Sealing is specified as double or tandem with a compliant barrier fluid to contain toxic H2S.
Hardness control, material traceability and hydrostatic testing are documented under ISO 9001 production. Every unit ships with NACE compliant material certificates and dimensional reports, giving sour service projects the assurance they require.
Because sour service failures are costly and often safety critical, we treat compliance as a design input from the first drawing: alloy selection, hardness verification and seal arrangement are all specified up front for wet H2S duty.
| Parameter | Specification |
|---|---|
| Configuration | API 610 OH6 vertical integrally geared |
| Maximum Flow | 55 m3/hr (242 gpm) |
| Maximum Differential Head | 1,000 m (3,280 ft) |
| Maximum Motor Power | 160 kW (200 HP) |
| Max Case Working Pressure | 10.0 MPa (1,450 psi) |
| Operating Temperature | -20 C to +200 C |
| Compliance | NACE MR0175 / ISO 15156 |
| Seal Options | Double and tandem with barrier fluid |
| Hardness Control | To NACE limits on wetted parts |
| Mounting | Vertical |
| Component | Material of Construction |
|---|---|
| Pump Case | CRA Clad Carbon Steel or 316 SS |
| Impeller and Inducer | Duplex SS / 316 SS |
| Shaft | 17-4PH to NACE hardness |
| Seal Faces | Silicon Carbide / Tungsten Carbide |
| Fasteners | NACE compliant alloy steel |
- NACE MR0175 compliance: materials and hardness are controlled for wet H2S service.
- CRA clad wetted parts: resist sulfide stress cracking and general corrosion.
- Low NPSHr inducer: handles two-phase prone sour streams.
- Containment sealing: double or tandem seals for toxic H2S protection.
- Full traceability: NACE material certificates issued with each pump.
- Wet H2S sour hydrocarbon service
- Sour gas processing and treating
- NACE regulated refinery services
- Corrosive and toxic fluid transfer
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