*mydirectindustry

Catalogs
SOMAS
Butterfly valve Type VSS LT (Low Temperature)

Butterfly valve Type VSS LT (Low Temperature)

Product catalog summary

Overview: The SOMAS butterfly valve, type VSS LT, is designed for control, on/off, and manual operations. It is suitable for handling liquids, gases, and steam at temperatures as low as -196°C (-320°F). The valve can be mounted between flanges or supplied in a lugged design.

Design and Material: The valve features an advanced triple eccentric design with a unique disc shape, allowing the use of a solid stainless steel seat. This design ensures durability and effective performance even under high flow velocities. The valve is made of stainless steel and can optionally have a seat made of reinforced PTFE for higher tightness class.

Specifications:

Nominal Pressure: PN 10 - 25
Nominal Size: DN 80 - 500
Temperature Range: -196°C to 200°C
Tightness Class: IEC 534-4 Class V (metal seat), Class VI (PTFE seat)

Flow Characteristics: The valve's flow characteristics are detailed with capacity factor KV and resistance factor ζ across various opening angles and nominal sizes. The relation between KV and CV is given as KV=0.86CV.

Installation and Certification: The valves are delivered ready for installation and operation, factory tested with actuators, positioners, and accessories. They can be certified according to DIN50049-3.1B or equivalent, with additional certifications available upon request.

Flange and Pressure Specifications: The valves are equipped with flanges that can be drilled for PN 10, PN 16, PN 20, and PN 25, with options for ANSI and BS standards. The face-to-face dimensions comply with EN 558-1 and EN 558-2 series 20.

Ordering and Customization: When ordering, specify the valve type, actuator, positioner, and accessories according to the valve specification system. The valves can be fitted with SOMAS manual, on/off, or control actuators, and other types of actuators and accessories can be fitted as per customer specifications.

Technical Information: Further technical data on materials, flange standards, and steam data can be found in section 6 of the SOMAS catalogue.

Catalog excerpts

Butterfly valve Type VSS LT (Low Temperature)-1

Advanced triple eccentric designis designed for applica tions at temperatures down to -196װC (-320F).has a tightness class in accordance with IEC 534-4 Class V as standard.has a solid seat made of stainless steel.has an extended bonnet and the stuffing box located at the top to pre- vent freezing and allow easy maintenance.OptionSeat made of reinforced PTFE (which gives a tight-ness class in accordance with IEC 534-4VI) The SOMAS butterfly valve type VSS LT > Butter y valve, type VSS, with extended bonnet and actuator Type RC size="-1">

Open the catalog to page 1

Butterfly valve Type VSS LT (Low Temperature)-2

100% Flow 0 90 Opening angle >

Open the catalog to page 2

Butterfly valve Type VSS LT (Low Temperature)-4

(mm) 5,5 bar 4 bar 5,5 bar 4 bar 5,5 bar 4 bar Hand lever Gear unit > A = Wafer type C = 1.4462 (metal seat, 3 pcs.) 2 = PTFE F = Lugs according to DIN R = PTFE (design for Cryo) >

Open the catalog to page 4

Butterfly valve Type VSS LT (Low Temperature)

Butterfly valve Type VSS LT (Low Temperature)

Catalog excerpts

All SOMAS catalogs and technical brochures