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Si-210
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Datasheet Butterfly valve Type VSS LT (Low Temperature) Nominal pressure Nominal size Material triple • Advanceddesign eccentric • Designed forat applications temperatures down to -196° C (-320° F) • Tightness class in accordance with EN 60534-4 Class V as standard made • Solid seatsteel of stainless bonnet and • Extendedbox located stuffing at the top to prevent freezing and allow easy maintenance • Seat made of reinforced PTFE (which gives a tightness class in accordance with EN 60534-4VI) Wafer design PN 10 - 25 DN 80 - 500 Stainless steel The SOMAS butterfly valve, type VSS LT, is a control-, on/off- and manually operated valve. The valve is designed to handle a wide range of liquids, gases and steam at temperatures down to -196° C (-320° F). The VSS LT-valve can be mounted between flanges and also supplied in lugged design. The valves have an advanced triple eccentric design including a unique shape of the disc allows the use of a solid stainless steel seat. The solid seat remains unaffected by high flow velocities and a good valve function is achieved even on difficult applications. The SOMAS valves are delivered ready for installation and operation. The valve assemblies are delivered factory tested as complete units with actuators, positioners and accessories.

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Tightness class Temperature range The tightness class is related to the chosen material in the seat ring. Metal seat PTFE seat Degreasing The valve can be degreased and packed in plastic bags and marked for oxygen service. Flow characteristics 100% Flow Certification The valves can be delivered with certificates according to EN 10204 - 3.1 or equal. Other types of certificates on request. Certificates for oxygen service on request. Flange standard The SOMAS butterfly valves type VSS LT in above mentioned sizes are equipped with flanges which can be drilled for PN 10, PN 16, PN 20 and PN 25....

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* Other lenghts available on request Max. allowable pressure drops/torque figures Max. allowable pressure drops as below are valid at 20° C (68° F) at -196° C (-320° F) Max. pressure drop. bar at opening angle Max. pressure drop. bar at opening angle

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Manual override Further technical information Technical data for the materials used in the SOMAS valves, flange standard, steam data, etc. can be found in section 6 of the SOMAS catalogue. The valves can be fitted with SOMAS manual, on/off or control actuators in accordance with the selection table above. The valves will then be delivered as tested shut-off or control units ready for installation. Check sections 4 and 5 of the SOMAS catalogue, where positions, limit switches and solenoid valves are also presented. Ordering State desired valve according to the valve specification system...

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Si-210 4Pages

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Si-210
4Pages