Data Sheet

Globe Valve Selection Guide
Product Bulletin
PF51.1:010
July 2008
7
Three-Way Valves
YD AND YS
W0665-3
GX 3-Way
W9471
Figure 7. Three-Way Valves
GX 3-Way YD and YS
Applications
Compact, state-of-the-art control valve and actuator system, designed to
achieve accurate controllability of waters, oils, and other industrial fluids. Ex-
cellent for accurate temperature control. Live-loaded PTFE packing is stan-
dard.
Three-way valves for flow-mixing or flow-splitting service. The YS is unbal-
anced, and the YD is balanced.
Style
Side-port common (unbalanced) construction for both diverging and con-
verging flow.
Optional bottom-port common for high pressure-drop applications.
Cage-guided three-way globe valves
Balanced or unbalanced trim
Sizes
DN 25, 40, 50, 80, and 100
NPS 1, 1-1/2, 2, 3, and 4
DN 15, 25, 40, 50, 65, 80, and 100
NPS 1/2, 3/4, 1, 1-1/2, 2, 2-1/2 3, and 4
Ratings
EN 1092-1 PN 10 to 40
ASME B16.5 CL150 and CL300
EN 1092-1 PN 10, 16, 25, 40, 63, or 100
ASME B16.5 CL125, CL250, CL150, CL300, or CL600
End Connections
Raised-face flanges per EN 1092-1 and ASME B16.5
NPT internal, flat- or raised-face flanged, ring-type joint, socket-weld and
buttwelding ends
Valve Body Materials
EN 1.0619 or 1.4409
ASME SA216 WCC steel, ASME SA351 CF3M
Cast iron, WCC or LCC, CF8M (materials available to EN, ASME, or
ASTM specifications)
Valve Plug and Seat Ring (Trim) Materials
CF3M plug and bottom seat with optional hardfacing (bottom port
construction). Both side- and bottom-port constructions use a hardfaced
upper seat
CB7Cu-1, S416000, CF8M, or CF8M with CoCr-A on seat or seat and
guide
Flow Characteristics and Maximum Flow Coefficients
Linear
Maximum C
v
from 14 to 178
Linear
Maximum C
v
8.10 to 567
Shutoff Class (IEC 60534-4 and ANSI/FCI 70-2)
Metal seat Class IV (standard)
Class II or IV (YD)
Class IV or V (YS)
Available Actuators (refer to pages 11 and 12)
GX multi-spring, pneumatic diaphragm
657 or 667 spring-and-diaphragm;
585C piston