Data Sheet

YD and YS Valves
D100031X012
Product Bulletin
51.1:YD
June 2014
8
Table 1. Travel, Port, and Gasket Loading Pressure Drop Information
VALVE SIZE,
NPS
MAXIMUM
RATED TRAVEL
SEAT RING
PORT DIAMETER
PRESSURE DROP LIMIT
DUE TO GASKET LOADING
mm Inches mm Inches
YS YD
(1)
bar psig bar psig
1/2, 3/4, 1, 1-1/2
2, 2-1/2
3
4
6
8
(2)
19
29
38
51
51
57.2
0.75
1.125
1.5
2
2
2.25
33.3
58.7
87.3
111.1
177.8
177.8
1.3125
2.3125
3.4375
4.375
7
7
41.4
31.7
37.9
38.6
52.4
---
600
460
550
560
760
---
103.4 1500
1. For standard YD only. For high temperature YD, consult your Emerson Process Management sales office.
2. NPS 8 only available in YD construction.
Table 2. Trim Materials
PART
MATERIAL
Trim 1 Trim 2
(1)
Trim 2A
Valve Plug
YD CB7Cu-1(17-4PH SST) CF8M (316 SST) CF8M/CoCr-A
YS S41600 (416 SST) S31600 (316 SST) CF8M/CoCr-A
Upper Cage and Lower Cage CB7Cu-1 CF8M, ENC CF8M, ENC
Upper Cage Retaining Ring (High-Temperature YD Only) S41600 CF8M CF8M
Upper Seat Ring (YS Only) and Lower Seat Ring S41600 S31600 S31600/CoCr-A
1. Standard trim for stainless steel valves.
Figure 6. Flow Directions
10A8391-A
10A8391-A 10A8392-A
10A8392-A
B2413
YD
PLUG DOWN
YD
PLUG UP
YS
PLUG UP
YS
PLUG DOWN