Key Specifications/Special Features:
- Wafer type butterfly valve (middle line)
- Design to API STD standard
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Structure:
- DB71F46 fully lined type: fully lined body/fully lined disc/disc and stem is a whole
- DB71F4 fully lined type: fully lined body/fully lined disc/combined stem and disc
- DB71F/P semi lined type: fully lined body/unlined SS disc/combined stem and disc
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Standard:
- Design: API 609 (middle line)
- Face to face: API 609 (A)
- Flange dimension: ANSIB 16.5 (NPS≤24), API 605 (NPS ＞24)
- Test: API 598
- Symbol: MSS SP-25
- Supply: API 609
