**Self-priming OH3 in-line pump is our special design, with self-priming tank at pump suction front.
**Low NPSHr and small installation space.
**Pump axial thrust is balanced through wearing at front and rear impellor and balancing hole.
**Pump cover can function cooling and heat preservation for pumping liquid where has temperature requirement.
**Bearing housing is integrated with pump, with separate bearing brackets, and rolling bearing bears pump loads.
**Driver is usually mounted on a support integrated to pump.
**Pump and driver are connected by disphragm coupling.
**Exchangeable wearing for casing, cover and impellor, as well as shaft seal with shaft sleeve for easy maintenance.
API610 Centrifugal Pumps
| Overhung (OH) | Flexibly coupled | Horizontal | Foot-mounted | OH1 |
| Horizontal | Centerline-supported | OH2 | ||
| Vertical | In-line with bearing bracket | OH3 | ||
| Rigidly coupled | Vertical | In-line | OH4 | |
| Between bearings (BB) | 1 & 2 stages | Axially split | Foot-mounted | BB1-A |
| Near-centerline mounted | BB1-B | |||
| Radially split | Centerline-supported | BB2 | ||
| Multistage | Axially split | Near-centerline supported | BB3 | |
| Radially split | Single casing | BB4 | ||
| Double casing | BB5 | |||
| Vertically suspended (VS) | Single casing | Discharge through column | -- | VS1 |
| Separate discharge pipe | Line shaft | VS4 | ||
| Cantilever shaft | VS5 | |||
| Double casing | Radially split | -- | VS6 |
**Some of above types of pumps does not meet all the requirements of API610 standard.
**API610 standard suggests that, further or differing requirements can be needed for individual applications. The vendor is necessary to identify any variations from API610 standard and provide details for alternative equipment or engineering solutions.
