OHHL low flow high head pumps – Thetys Pumps

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OHHL low flow high head pumps

Thetys Pumps / Products / Pumps / Single stage centrifugal pumps / API 610 and ISO 13709 pumps / OHHL low flow high head pumps

OHHL low flow high head pumps

Finely tuned pumps for all your industrial needs

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