- Valve design
- Identify straight/angle or pressure-reducing design, approved drawing and flow direction.
- Hose and pipe ends
- Specify each connection standard, thread details, local mating requirements and dimensions.
- Seat and stem region
- Define seat datum, bonnet joint, stem alignment and machining allowance.
- Pressure and mechanics
- Provide design duty, connection loads, body defect and leakage criteria.
- Release responsibility
- State approved material, machining scope, inspection records and complete-valve performance/qualification owner.