Valve Type: Triple offset metal seated butterfly valve
Valve Nominal Size: DN50 through DN3000; 2 inch through 120 inch
Pressure Rating: PN6, 10, 16, 25, 40, 63, 100; ANSI Class 150, 300, 600, 900, 1500
Body Style: Wafer, Lugged, Butt weld or double flanged triple offset butterfly
Flow Direction: Bidirectional; Unidirectional
Flow Characteristic: Nearly equal percentage EQ%
Temperature Range: From -196°C to 450 °C;
Body & Disc & Seat Material: Carbon steel, Alloy steel, Stainless steel, Titanium, Hastelloy, Super duplex, Monel
Stem Material: A276 420, 17-4PH, Monel, Inconel
Disc Seal Material: Metal laminated (Graphite, PTFE or RTFE laminated with: Stainless steel, Inconel,
Duplex, Monel, Hastelloy C, Alloy 20)
Seat Leakage: ANSI VI, API598 or zero leakage bubble tight shut off
Actuator: Pneumatic rack and pinion actuator; Pneumatic scotch yoke actuator;
Rotary Diaphragm Actuator; Electric actuator;
Hand-wheel manual for option; Manual operator
Description & Features
CV3200 triple offset metal seated valve features a special sealing mechanism, which consists of contacts of an inclined conical profile machined into the valve sealing surface. As a result, the friction and abrasion between the sealing elements disc and seat are minimized. The unique feature of this design is that it provides low torque, broad sealing and tight shut-off.
Single offset
The rotation axis of the disc is moved back from the sealing surfaces of the disc. The purpose of this offset is to have a continuous sealing surface on the disc.
Double offset
The rotation axis of the disc is moved away from the center-line of the valve body. The purpose of this offset is to lift the disc quickly off and away from the seat ring in the body while decreasing the friction during operation
Triple offset
The virtual conic axis, extended from the sealing surfaces of the disc is inclined from the rotation axis of the disc. The purpose of this offset is to eliminate friction, galling and wear generated at the sealing surface during operation and provide bubble tight shut-off on high pressure and temperature.
Laminated seal ring:
The laminated seal ring is composed of alternating layers of metal and graphite.
The layers of graphite compensate for the lack of smooth mating surfaces. The laminated seal ring provides bubble tight shut-off even in gas applications.
Each individual layer performs an independent sealing and is unaffected by the damages to other layers.
Metal seated triple offset design.
Standardized actuation flange.
Anti-blow-out safeguard.
Stellited seat integral with body is standard, floating seat and bidirectional seal optional.
Solid metal seat and laminated metal disc seal.
Tight shut-off zero leakage.
Eliminates rubbing and jamming associated with sealing surface contact.
Cryogenic service available.
Steam jackets available.
High pressure available.
Long life.
Fire safe to API 607.
