The INTERVALVE IVTL model incorporates the optimum design features to provide long trouble free service in the field.
INTERVALVE Butterfly Valves IVTL Model
This general purpose soft seated Butterfly Valve has a fully rubber lined single piece body with a centric disc construction and is available in wafer lugged style body pattern to ensure precise location in pipeline.
The body liner which also functions as the soft seat, come either in a replaceable version or an integrally moulded (bonded) version and offers 100 % bi-directional sealing against vacuum to rated pressures of PN 10 or PN 16. The lugged version with threaded holes can be used as end of line valves or terminal end valves.
The ultimate in high performance Butterfly Valves, INTERVALVE IVEX-series incorporates the 'state of the art' valve technology to out perform the competition. The double offset disc design nearly eliminates the seating wear due to the cam action of the disc during closing. The mechanical stopper provided on the valve body ensures precise valve closing every time to ensure specified seat tightness.
The disc has a spherical profile and comes out of contact with seat in the initial opening itself.
The valve is available with 3 distinctly different seat design versions, viz. Soft seated, Fire safe and Metal to Metal seated with wafer or wafer lugged body option. The valve has excellent throttling characteristics with good low flow control capability, which offers an inherently higher range & ability. This feature of IVEX series makes them ideal for the flow control / modulating duties. An adjustable gland box type shaft sealing arrangement permits on line adjustment of the packing to ensure zero leakage.
The fire safe version, IVEX - F model has been fire tested and certified as per the requirements API 607 standard by Lloyd's Register of Shipping.
General design and manufacturing; API 609 category B; Pressure temperature rating: ANSI B 16.34; Valve face to face dimensions: API 609 category B / ANSI B 16.10; Valve inspection and testing: API 598 / ANSI / FCI 70-2; Flange standard conformity: ANSI B 16.5 Class 150; Fire safe testing: API 607
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