- Cover interface
- Envelope, bolt pattern, casing register and gasket or O-ring groove.
- Shaft geometry
- Bore, coaxiality, face flatness and machining allowance.
- Service & acceptance
- Actual fluid composition, pressure, temperature, corrosion conditions, material traceability and agreed inspection.
- Material specification
- Alloy grade, governing standard and revision, manufacturing condition and any restricted substances.
- Order & acceptance
- Approved drawing revision, quantity, blank or machined delivery, inspection criteria and required records.