商品介紹VelanMemoryseal™ Cryogenic Top-Entry Ball Valve
Memoryseal™ Cryogenic Top-Entry Ball Valve
DESIGN FEATURES:
- Meets ASME B16.5, ASME B16.34, API 608, API 598.
- Face-to-face dimensions meet ASME B16.10 long pattern.
- Gear actuator standard on NPS 8–24 (DN 200–600) SB-150/300 and NPS 6 –12 (DN 150–300) SB-600 valves.
- Memoryseal seats compensate automatically for wear and fluctuations of pressure and temperature.
- Long cycle life.
- Low torques.
- Blowout-proof stem.
- Stem bearing reduces side thrust.
- Multiple solid PTFE or chevron type stem seal (adjustable).
- Pressurized thrust washer prevents galling and provides secondary stem seal.
- Fully enclosed spiral wound graphite filled stainless body gasket.
- Locking devices optional on NPS 1⁄2– 6 (DN 15–150) valves (SB-600 up to NPS 4 (DN 100)).
- Air vent on all balls.
- Fire safe to API 607, BS 6755:
- 1) Body gasket SS 316 and graphite (standard);
- 2) Ball seats on body edge;
- 3) Stem shoulder seats on body.