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Butterfly valve PTFE Lined

Salient Feature

USMANI VALVES Butterfly valve PTFE lined UTVC provides an optimum solution to the corrosion problems encountered by the chemical process industries with conventional Butterfly valves.

The PTFE seat liner covers the entire wetted surface of the body and extends on to the flange contact faces, thus eliminating possibility of any media contact with the body metal.

The circularly molded full back up elastomer and live loaded disc shoulder sealing ensures bubble tight closing of the Valve with zero shaft leakage. The valve is adaptable for ON / OFF as well as control duty and can be fitted with actuators and accessories as required to meet the specific duty conditions.

Mfg. Standard:
General design and manufacturing: EN 593
Valve face to face dimensions: EN 593 / ISO 5752 Tab 5 & API 609 category A
Top flange drilling: ISO 5211
Valve inspection and testing: EN 12266 Part 1
Flange standard: DIN EN 1092-PN6 / PN10 / PN16, Class 150, IS 6992
Specification:
Construction type: Centric Disc Butterfly valve with PTFE lined body
Body type & end connection: Short wafer, 2 piece body
Seat type: PTFE, GFT with Viton backup ring
Size range: DN 50 to DN 350
Pressure rating: PN10 (max)
Operating temperature range: -250 C to 2000 C (depending on MOC)
Seat leakage: Tight shut off
Operation: Hand lever for sizes up to DN 250
Worm gear boxes for DN 50 to DN 300
Pneumatic. Electric actuator operation - optional.
Standard Material of Construction
Valve Body: SGI / WCB / CF8 / CF8M
Disc: CF8 / CF8M / Other special alloys
Seat: PTFE / GFT
Shaft: SS 410 / SS 316 SH / 17.4 PH