KSB ECOLINE FYC, Operating Manual

Page: 31 / 100

4 Valve Description
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4.4.1.2 Fluids handled
▪ Steam
▪
Thermal oil
▪ Explosive fluids
▪ Combustible fluids
▪ Fluids containing gas
▪
Gas
▪ Fluids posing a health hazard
▪ Toxic fluids
▪ High-temperature hot water
▪
Highly aggressive fluids
▪ Condensate
▪ Corrosive fluids
▪ Valuable fluids
▪
Volatile fluids
▪ Fluids containing mineral oils
▪ Oil
▪ Feed water
▪
Other fluids on request.
4.4.1.3 Design details
Design
▪
Valve design to BS 1873 and MSS SP-117
▪ On/off disc
▪ Bolted bonnet
▪ Outside screw
▪
Outside yoke
▪ Integrated seat ring
▪ Metal-seated
▪ Rising stem
▪
Non-rising handwheel
▪
Graphite gland packing
▪ Stainless steel/graphite gaskets
▪ Travel stop
▪ Stem sealed by double-walled bellows and back-up gland packing
▪
Positive anti-rotation feature between stem and bellows
▪ Position indicator
▪ The valves satisfy the safety requirements of Annex I of the European Pressure
Equipment Directive 97/23/EC (PED) for fluids in Groups 1 and 2.
▪
The valves do not have a potential internal source of ignition and can be used in
potentially explosive atmospheres, Group II, category 2 (zones 1+21) and
category 3 (zones 2+22) to ATEX 2014/34/EU.