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A wafer style butterfly valve comprising a valve body having a through opening forming a fluid flow passage and having a wall coaxially surrounding an end portion of said fluid flow passage a first annular groove in a surface of said wall
Our wafer style butterfly valves are manufactured with a cast iron body, stainless steel shaft and disc, PTFE bushing, EPDM liner and, EPDM o-ring. The heavy duty epoxy coating is durable and the valve comes with a metal handle with a spring lever so that the disc will not drift under pressure..
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| Wafer Style Butterfly Valve |
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Wafer type butterfly valve with an integrally bonded elastomer liner. Requiring absolutely no form of maintenance the UNIMAC is a perfect "Fit and forget"valve. Available with either a flangeless
or lugged body,in a size range of 50-600 mm,a pressure rating of up to
PN 16 and offered with latching lever or actuation as well as different
combination of disc and seat materials, "UNIMAC" is a truly versatile
valve. |
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| Features |
Benifts |
Integrally bonded body seat |
Easy
And Trouble free mounting in the pipeline. No maintence. No tearing and
distortion of liner. Exceptionally long seat life. Uniform sealing.
Suitable for vacuum and high flow applications. |
Stainless steel fully machined shaft(Optinal) PTFE coated |
Permanent dry lubrication. Ease of operation. Prevents corrosion on shaft. |
Primary and secondary seals integral with body lining |
Ensures compatibility with media |
Different disc and seat combination avaiable |
Suitable for a wide range of applications. |
Weatherseal feature |
Atmospheric sealing to valve internals. |
Spherical machined and polished disc(optional) |
Ensures longer seat life,easier operation and tight shut-off. |
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Applications
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| General Applications |
Continuous Working
Temperature Range |
Maximun Working Pressure |
Disc Material |
Seat Material |
| Oils, fuels, water, air, gases, powders, pellets, slurries etc |
Hydrocarbons
(Except aromatics)- 10C to 90C
Other Liquids - 10C to 80C
Dry Services - 10C to 60C |
16 bar |
Epoxy coated
SG iron |
Black Nitrile |
| Brines, sea water, estuary water, marine bilge and ballast systems |
Liguids - 10C to 80C |
16 bar |
Aluminium Bronze |
| Steam, water, hot gases, powders, slurries and aqueous slurries of an abrasive nature |
Liquids - 10C to 120C
Dry services - 10C to 100C |
16 bar |
Stainless stell Periphery
Polished |
General
Purpose
EPDM |
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Butterfly Valves, wafer type with integrally moulded elastomer body sleeve are designed for longer life and trouble free performance. Integrally moulded sleeve ensures perfect resistance against friction between the disc and the sleeve. |
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| Special Features : |
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Integrally moulded elastomer liner restricts dislocation of seat and ensures longer life.
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Flat surface on the disc and the liner at the top and bottom ensures perfect sealing between body, disc and stem.
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Elastomer body liner is extended deep into the top and bottom of disc shaft passages with integral 'O' ring to ensure no working media contacts the body material, thus ensures longer life for body.
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A primary seal provided at the top end of the body prevents entry of any foreign particles in the Valve, thus ensures longer life for Stem and smooth operation.
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Valve disc is designed to ensure smooth straight through flow, which reduces pressure drop across the Valve.
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Close tolerance maintained between the liner, disc and stem reduces operation torque and ensures smooth and easy operation.
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Integrally moulded liner got integral gasket with it at both ends of the Valve which eliminates requirement of Valve mounting gaskets.
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Designed and manufactured to conform BS 5155/API 609
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Suitable to mount between flanges of ANSI B16.5 [150#] or BS-10 Table D/E
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Pneumatic and Electrical actuated Valves are available on demand.
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Top platform of the Valve is suitable to mount actuator or manual gearbox directly.
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Flow Control Lever is provided to facilitate fine control of flow.
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