KSB ECOLINE FYC, Operating Manual

Page: 22 / 100

4 Valve Description
22 of 100
4.3.3.1 Operating data
Table 16: Operating properties
Characteristic Value
Nominal pressure Class
800 - 2500
Nominal size NPS
½
" - 2"
Max. permissible pressure
431
bar /
6250
PSI
Min. permissible temperature 0 °C / 32 °F
Max. permissible temperature
+538
°C /
+1500
°F
Temperatures < 0 °C on request
Selection as per pressure/temperature ratings
(
ð
Section 4.3.3.4, Page 24)
4.3.3.2 Fluids handled
▪ Steam
▪ Fluids containing gas
▪ Gas
▪
High-temperature hot water
▪
Fluids containing mineral oils
▪ Oil
▪ Feed water
4.3.3.3 Design details
Design
▪ Globe valve to API 602
▪ Tested to API 598
▪ Body made of forged steel
▪
Bolted bonnet (Class 800)
▪ Welded bonnet
▪ Outside screw
▪ Outside yoke
▪
Rotating stem
▪ Rising handwheel
▪ Stem sealed by gland packing
▪ Reduced bore
▪
Two-piece self-aligning gland follower
▪ Graphite gland packing
▪ Stem with burnished shank
▪ Fully confined bonnet gasket (Class 800)
▪
Back seat
▪ Solid valve disc
▪ Integral seat - ST6 (HF)
▪ 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.