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VF-9 serie includes high performance butterfly valves, manufactured with different kind of seats (PTFE, RPTFE, PTFE+316 fire safe, INCONEL, etc.) and various type of materials (carbon or stainless steel, alubronze, etc.) for body and disc. The valves could be available wafer, lugged or flanged, with rating ANSI 150 (VF-91, VF-92, VF-93) or ANSI 300 (VF-94, VF-95, VF-96), from diam. 2” to diam. 72”.
Valves of VF-8 serie are a triple-offset designed, to be 90 degrees rotary and torque seated. Provided with solid metal seat or laminated seat, their life may up to 50.000 cycles with no jamming and packing adjustment. The valves, wafer, lugged or flanged type, are manufacturing with a large range of selected materials, rating ANSI 150 (VF-87), ANSI 300 (VF-88) or ANSI 600 (VF-89), from diam. 3” up to diam. 72”. The full serie passed the fire safe test, and emission approval to TA-LUFT (ISO 15848-1) verified by TUV. Provided by extensions, they have been also tested for cryogenic use (BS 6364).
Gimbal expansion joints are able to absorb angular motions in all planes and directions. Bellows and internale sleeves (liners) are made of stainless steel AISI 321. End connections are either stainless steel or carbon steel. Other materials could be available on request.
A particular construction is mainly manufactured in order to be mounted for compensating dilatations and earthquake movements on petrol tanks.