Edition: 2008-06 SOMAS Butterfly Valve type VSSAdvanced triple eccentric designis designed for control and shut-off applicationsis designed for applications up to 350 C (662 аF)has a tightness class in accordance with IEC 534-4 Class V as standardhas a solid seat made of stainless steelis designed to be mounted between flanges alt. with lugsOptionPTFE-seat High temperature applications up to 550 C (1022 аF) > SOMAS butterfly valves, type VSS is used as a control, on/off and shut-off valve. The VSS valve is designed to handle a wide range of liquids, gases and steam within a broad temperature range.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 un-affected by high flow velocities and temperatures. A good valve function is achieved even on difficult applications.The seat is replaceable in alternative materials. The VSS valve can be mounted between flanges and is also supplied in lugged design.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. >

tr.row {} td.cell {} div.block {} div.paragraph {}

A = PTFE (10 % carbon) 170 C C = 1.4462 (metal seat, 3 pcs.) 350 аC > 1 550 C > 2 D = 1.4470 (metal seat type Y) 350 аC > 1 550 C > 2 E = 1.4547 400 аC P = PTFE ( bre glass 15 %) 170 C > A = 1.4460 150 аC B = 1.4460 (hard chromed) 350 C > 1 550 аC > 2 C = 1.4460 (HiCo coated) 350 C > 1 550 аC > 2 F = 1.4435 150 C G = 1.4435 (hard chromed) 550 аC K = 1.4539 350 C > 1 T = Titanium 150 аC > 1 Check with SOMAS for temperatures between 350 and 550 аC At higher pressures for example steam turbine applications. > 2 At lower pressures for example exhaust applications. > A = 2343-12* 1 = Without bearing...