KSB ECOLINE FYC, Operating Manual

Page: 53 / 100

4 Valve Description
53 of 100
4.5.4.5 Materials
904
461
166
902
920.3
900
361
100
560
200
920.2
411
465
961
452
636
544
554
920.1
Table 55: Parts list
Part No. Description Material
A 351 CF8
A 351 CF8M
100 Body A 351 CF8 A 351 CF8M
361 Flexible wedge A 351 CF8 A 351 CF8M
200 Stem A 276 304 A 276 316
411 Joint ring Stainless steel/graphite Stainless steel/graphite
166 Yoke A 351 CF8 A 351 CF8M
461 Gland packing Graphite Graphite
465 Lower gland section A 276 304 A 276 316
452 Gland follower A 351 CF8 A 351 CF8
636 Lubricating nipple nickel coating nickel coating
544 Threaded bush A 439 D2 A 439 D2
961 Handwheel A 395 65 45 15 A 395 65 45 15
554 Washer A 395 65 45 15 A 395 65 45 15
920.1 Handwheel nut A 276 304 A 276 304
904 Grub screw A 276 304 A 276 304
920.2 Nut A 194 8 A 194 8
902 Stud A 193 B8 A 193 B8
560 Pin A 276 304 A 276 304
900 Eyebolt A 193 B8 A 193 B8
920.3 Nut A 194 8 A 194 8
Table 56: Trim materials
Part No. Description Trim 2 Trim 10
304 / 304 316 / 316
100 Body 304 stainless steel 316 stainless steel
361 Flexible wedge 304 stainless steel 316 stainless steel
200 Stem 304 stainless steel 316 stainless steel
4.5.4.6 Function
The main components of the gate valves are the body (100), the yoke (166), the
flexible wedge (361), the stem (200) and the actuating unit.
Stem seal
The gland packing (461), which seals off the stem (200), is tightened via the gland
follower (452) by means of eyebolts (900) and nuts (920.3). The yoke (166) features
an integral back seat which seals off the valve when the stem (200) is fully retracted.