VFQ Petrochemical Bellows Seal Valve

Body: GS-C25/A105. CF8M/F316 available.
Seat: SS-304. Also PTFE, 420, STL, or SS-316.
Disc: SS-420. SS-304, STL, or SS-316 available.
Sizes: from DN15 to DN400.
Face to face: DIN3202/ EN558-2.
Connection: PN16, PN25, and PN40 flanges; EN1092-2.
Double-seal corrugated tube bellows.
Temperature: -196°C ~ +600°C (other materials).
Visual position indicator.
Handwheel and non-rising stem.
Thermal insulation bonnet.
Stem, nut, and spindle lubrication device.
High-temperature resistant protective paint.
Handwheel operated.
Design and manufacture according to EN13709 Standard.
Manufacturing tests according to EN12266 Standard.
Manufacturing according to ANSI standard available.

VFQ design advantages:

• • Innovative bellows-to-bonnet seal design. The connection between the bellows and bonnet uses a robust ring, extending durability beyond 10,000 cycles. This protection ring between the bellows and bonnet provides 3 seals when the valve is fully open: (1) protection ring + disc, (2) bellows, and (3) packing. The protection ring is available in metal or PTFE.

• • Extra-long heat-dissipating bonnet.

• • Two-piece stem construction increases resistance to wear and corrosion.

• • 360° rotating disc prevents impurity buildup and vibration transmission to the shaft.

• • Specially suited for petrochemical, chemical, pharmaceutical, and energy industries.

• • 11 different disc designs available depending on the application.