Category
Rotating Equipment
Subcategory
Pump
Applicable standards
4
Issuing bodies
4
Description
Sealless centrifugal pump with magnetic coupling for hazardous, toxic or leak-sensitive service.
Applicable Standards (4)
API — 1 standard
API 685
Sealless Centrifugal Pumps for Petroleum, Petrochemical, and Gas Industry Service
Magnetic-drive and canned-motor sealless pumps for heavy-duty service.
Key requirements (8)
- Sealless centrifugal pumps (mag-drive and canned-motor) for petroleum, petrochemical, gas.
- Companion to API 610 — same hydraulic and mechanical principles.
- Pump types: OH and BB configurations only (no VS).
- Hydrotest: 1.5 × MAWP for ≥ 30 minutes.
- L10 bearing life: ≥ 25,000 hrs at design conditions.
- Containment shell: full pressure rating required (canister leakage = catastrophic).
- Mandatory monitoring: power monitor, bearing temp, leakage detection.
- Used for hazardous, toxic, or leak-sensitive services where seal failure unacceptable.
ASME — 1 standard
ASME B73.3
Specification for Sealless Horizontal End Suction Centrifugal Pumps for Chemical Process
Magnetic-drive and canned-motor sealless chemical process pumps.
ISO — 1 standard
ISO 9906
Rotodynamic pumps — Hydraulic performance acceptance tests — Grades 1, 2 and 3
Hydraulic performance acceptance testing of pumps.
Hydraulic Institute — 1 standard
HI 1.3
Rotodynamic Centrifugal Pumps for Design and Application
Application guidance for centrifugal pumps.