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OHHL low flow high head pumps | Sulzer

OHHL low flow high head pumps

The OHHL is our API 610 (ISO 13709) Type OH2 low-flow horizontal overhung process pump. It covers the low-flow end of the OHH range map. The unique low-flow impeller design provides gap-free coverage for low-flow, high-head applications. The bearing frame and mechanical seals from OHH are utilized to minimize spares inventory.

Main benefits

Stable head-capacity curves achieved with unique low-flow impeller-diffuser design Low-flow, high-head gap-free coverage Heavy-duty baseplates with 2x ISO 13709 (API 610) nozzle load option ISO 21049 (API 682) cartridge type mechanical seals for reduced emissions Interchangeable parts reduce spares inventory

Main applications

Seawater booster for critical services Pump around services High head makeup services Light hydrocarbon boosting Light Vacuum Gas Oil (LVGO) and Heavy Vacuum Gas Oil (HVGO) services

Main design features

Unique low-flow impeller-diffusers create stable H-Q curves Robust OHH bearings, bearing housing and isolators ISO 21049 (API 682) mechanical seals interchangeable with OHH pumps Casings designed for 2x ISO 13709 (API 610) nozzle loads Grouted, non-grouted or pre-grouted baseplates are available

Key characteristics

Capacities From 1 to 60 m3/h / 4 to 260 US gpm Heads From 20 to 450m / 65 to 1 500 ft Pressures Up to 51 bar /740 psi Temperatures From -75 to 425°C / -100 to 800°F Discharge sizes From 25 to 50 mm / 1 to 2 inches Maximum speed of rotation Up to 3,600 rpm

Brochures

OHH and OHHL Process Pumps