Vanessa, triple offset rotary process valve
Vanessa valves has a torque generated elastic metal seal provides zero leakage performance as from API 598 & API 6D. Torque seating ensures continuous bi-directional zero leakage performance.
Quarter turn non-rubbing design is achieved by unique triple offset geometry, completely eliminating all seat to seal rubbing throughout the valves 90 degrees rotation.
Stellite hardfaced standard integral seat results in broader applications, longer valve life and less maintenance.
Single-piece cast body with face-to-face in acc to ISO 5752, ASME B16.10 and API 609 provides interchangeability with gate, high performance butterfly, plug and other valvesfor simpler and more flexible installation.
SIL approval IEC 61508 (ESD applications) and can be delivered as a package with SIL approved actuator and solenoid valve and/or positioner.
(a) Size 3"to 84" (DN80 - DN2100)
(b) Pressure rating ANSI 150 till 900 (ISO EN PN10 - PN150)
(c) Valve body mtrl CF8M, WCB, LCB (standard mtrl's, others on request)
(d) Flange drilling acc to ASME B16.5/B16.47, ISO 7005, DIN 2501
(e) Blow out proof shaft acc to API 609
(f) Connections wafer, flanged or welded
(g) Special versions for cryogenic, high temp, steam jacket or traced trim
(h) Fire Safe approval API 607
(i) Temperature range -254 till +815 deg C
(j) GOST-R, FSETAN, GGTN certificate for Russia
(k) Bi-directional shut off
(l) Anti static design, ATEX 94/9/EC
(m) Seat leakage test's API 598, API 6D, EN 12266-1 rate A, zero-leakage
(n) Design standards: ASME B16.34, API 609, DIN 3840
(o) Face-to-face: ISO 5752, EN 558, ASME B16.10, API 609