Data Sheet
EH and EHA Valves
D100042X012
Product Bulletin
51.2:EH
April 2015
17
Table 8. Port Diameters, Valve Plug Travel, Yoke Boss Diameters for TSO (Tight Shutoff) Trim
VALVE DESIGN TRIM
MAX TRAVEL YOKE BOSS SIZE
PORT DIAMETER
C
v
REDUCTION AT
100% TRAVEL
(1)
Nominal Actual TSO
mm Inch mm Inch mm Inch mm Inch
EHT NPS 6
CAV III 3-Stage
CL2500
95.3 3.75
90
127
3-9/16
5
111 4.375 106 4.1875 0%
EHT NPS 6 Std CL2500 76.2 3
90
127
3-9/16
5
111 4.375 106 4.1875
5% (linear)
5% (equal %)
1. This column lists the percent reduction of published maximum C
v
of the trim listed in the TRIM column.
Table 9. Shutoff Classifications per ANSI/FCI 70-2 and IEC 60534-4
Valve Design Port Diameter, mm (inch) ANSI/FCI Leakage Class
EHD/EHAD
47.6 mm (1.875 inch) and smaller II
58.7 mm (2.3125 inch) to 92.1 mm (3.625 inch)
II—Standard
III—Optional
111.1 mm (4.375 inch) and larger
III—Standard
IV—Optional
Valve
Size,
NPS
Port Diameter, mm (inch) Cage Style ANSI/FCI Leakage Class
EHD
(CL1500)
8
10x8
177.8 (7)
Eq. %, Mod. Eq. %
Linear (std. cage)
Linear (Whisper III, A1, B3, C3)
V - Standard to 593_C (1100_F) (for port
diameters from 177.8 (7 inch) through 254 mm
(10 inch) with optional Bore Seal)
12
14 x 12
254 (10)
EHD
(CL2500)
4
6 x 4
73 (2.875)
Eq. %, Mod. Eq. %,
Linear (std. cage),
Linear (Whisper III, A1, B3, C3)
V - Standard to 593_C (1100_F) (for port
diameters from 73 through 136.5 mm [2.875
through 5.375 inches] with
optional C-seal trim)
Linear (Cav III, 2-stage)
6
8 x 6
111.1 (4.375)
Eq. %, Mod. Eq. %, Linear (std.
cage), Linear (Whisper III, A1, B3,
C3, D3)
Linear (Cav III, 2- and 3-stage)
8
10x8
136.5 (5.375)
Eq. %, Mod. Eq. %, Linear (std.
cage), Linear (Whisper III, A1, B3,
C3, D3)
V - Standard to 593_C (1100_F) (for port
diameters from 136.5 through 177.8 mm [5.375
through 7-inches] with optional Bore seal)
12
14x12
177.8 (7)
EHS, EHAS, EHT, EHAT All Cavitrol III V
EHS, EHAS, EHT, EHAT All
Std or w/ Micro-Form or
w/ Micro-Flute
IV—Standard,
V—Optional
EHT w/ TSO (Tight Shutoff) See table 8 See table 8
TSO - Optional
TSO is not an ASME leakage class.
Valves with TSO trim are factory tested to a more
stringent Fisher test requirement of no leakage at
time of shipment. Test medium is water. Specify
service ΔP when ordering. Test procedure is
ANSI/FCI Class V test procedure B.
EHT w/ PEEK
(1)
Anti-Extrusion
Rings
25.4 (1) to 254 (10) All V to 316_C (600_F)
1. PEEK (PolyEtherEtherKetone)