KSB ECOLINE FYC, Operating Manual

Page: 49 / 100

4 Valve Description
49 of 100
4.5.3.5 Materials
Class 800 Class 1500 Class 2500
961
544
920
452
465
902
461
901
166
411
200
360
515
100
961
920.3
544
550
920.2
452
465
900
560
461
166
200
360
515
100
1
961
920.3
544
550
920.2
452
465
900
920.2
461
166
200
360
515
100
1
① Seal-welded
Table 50: Parts list
Part No.
Description Class Material
A 105
Trim 8
A 182 F11
Trim 5 A 182 F22
Trim 5 A 182 F304
Trim 2 A 182 F316
Trim 10 A 182 F91
Trim 5
100 Body A 105 A 182 F11 A 182 F22 A 182 F304 A 182 F316 A 182 F91
166 Yoke A 105 A 182 F11 A 182 F22 A 182 F304 A 182 F316 A 182 F91
200 Stem 800 A 182 F6a A 182 F6a A 182 F6a A 182 F304 A 182 F316
1500/2500 A 479-410-2 A 479-410-2 A 479-410-2 A 182 F304 A 182 F316 A 479-XM19
360 Wedge 800 A 182 F6a A 182 F6a + ST6 A 182 F6a + ST6 A 182 F304 A 182 F316
1500/2500 A 276-410/
A 276-410+ST6 A 276-410/
A 276-410+ST6 A 276-410/
A 276-410+ST6 A 276-304/
A 276-304+ST6 A 276-304/
A 276-304+ST6 A 276-410/
A 276-410+ST6
411 Joint ring 304 + graphite 304 + graphite 304 + graphite 304 + graphite 316 + graphite
452 Gland follower A 105 A 105 A 105 A 182 F304 A 182 F316 A 182 F22
465 Lower gland
section 800 A 276-410 A 276-410 A 276-410 A 276-304 A 276-316
1500/2500 A 276-420 A 276-420 A 276-420 A 276-304 A 276-316 A 276-420
461 Gland packing Flexible graphite Flexible graphite Flexible graphite Flexible graphite Flexible graphite Flexible
graphite
515 Seat ring 800 A 276-410 + ST6 A 276-410 + ST6 A 276-410 + ST6 A 276-304 A 276-316
1500/2500 A 276-410/
A 276-410+ST6 A 276-410/
A 276-410+ST6 A 276-410/
A 276-410+ST6 A 276-304/
A 276-304+ST6 A 276-304/
A 276-304+ST6 A 276-410/
A 276-410+ST6
544 Threaded bush A 276-410 A 276-410 A 276-410 A 276-410 A 276-410 A 276-410
550 Disc 1500/2500 A 276-410 A 276-410 A 276-410 A 276-410 A 276-410 A 276-410
560 Pin 1500/2500 A 276-410 A 276-410 A 276-410 A 276-410 A 276-410 A 276-410
900 Eyebolt 1500/2500 A 193 B8 A 193 B8 A 193 B8 A 193 B8 A 193 B8 A 193 B8
901 Bolt 800 A 193 B7 A 193 B16 A 193 B16 A 193 B8 A 193 B8M
902 Stud 800 A 193 B8 A 193 B16 A 193 B16 A 193 B8 A 193 B8
920 Nut 800 A 194 2H A 194 8 A 194 8 A 194 8 A 194 8M
920.2 Nut 1500/2500 A 194 2H A 194 2H A 194 2H A 194 8 A 194 8 A 194 4/7
920.3 Handwheel nut 1500/2500 A 194 2H A 194 2H A 194 2H A 194 8 A 194 8 A 194 2H
961 Handwheel A 197 A 197 A 197 A 197 A 197 A 197
4.5.3.6 Function
The main components of the gate valves are the body (100), the yoke (166), the
wedge (360), 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 studs (902) and nuts (920). The yoke (166) features an
integral back seat which seals off the valve when the stem (200) is fully retracted.
Seat/disc interface
The integral seating surfaces in the body (100) are hard-faced. The wedge (351) is
connected to the stem (200) by a "T" joint.
Bonnet/cover seal
On Class 800 valves, the yoke (166) is bolted to the body (100). The joint is sealed by a
joint ring (411). On Class 1500 and Class 2500 valves, the yoke (166) is screwed into
the body (100) and the joint is seal-welded.