Step-by-Step Valve Engineering Selector
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TSV API 6D Trunnion Mounted Ball Valve
Engineering rationale...
What TSV Engineers Need for a Firm Commercial Quotation
The 6 essential technical data points that avoid order delays and specification disputes:
1. Exact Duty & Service State
Isolation, continuous throttling, or backflow check? Continuous running or emergency shutdown (ESD)?
2. Nominal Bore & Pressure Class
NPS or DN, and ASME Class rating (150 to 2500) or DIN PN rating (PN16 to PN420).
3. Design Temperature Range
Maximum, normal operating, and minimum ambient temperature (critical for cryogenic or high-temp steels).
4. Process Medium & Corrosion
Fluid type, viscosity, presence of abrasives, H2S/CO2 partial pressure (NACE MR0175 requirement), chloride level.
5. End Connection Configuration
Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Butt-Weld (BW) schedule, or Wafer / Lugged.
6. Inspection & Certification Scope
Standard API 598 shell/seat test, EN 10204 3.1 MTR, fugitive emission ISO 15848, or third-party witnessed testing (SGS / BV / DNV).