Data Sheet

EH and EHA Valves
D100042X012
Product Bulletin
51.2:EH
April 2015
6
Table 1. Availability Chart
Valve Size,
NPS
(1)
CL1500 CL1500 Intermediate CL2500 CL2500 Intermediate
1-1/2 x 1 - - - - - - EHS EHS
2 x 1 - - - - - - EHS - - -
2 - - - - - - - - - EHD, EHS, EHT
3 x 2 - - - - - - EHD, EHS, EHT EHD, EHS, EHT
3 - - - EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
4 x 3 - - - - - - EHD, EHS, EHT - - -
4 - - - EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
6 x 4 - - - - - - EHD, EHS, EHT - - -
6 - - - EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
EHD, EHS, EHT
EHAD, EHAS, EHAT
8 x 6 - - - - - - EHD, EHS, EHT - - -
8 EHD, EHT
EHD, EHT
EHAD, EHAT
EHD, EHT
EHAD, EHAT
EHD, EHT
10 x 8 EHD, EHT EHD, EHT EHD, EHT EHD, EHT
12 EHD, EHT EHD, EHT EHD, EHT EHD, EHT
14 - - - - - - EHD, EHT - - -
14 x 12 EHD, EHT EHD, EHT EHD, EHT EHD, EHT
16 x 12 - - - - - - EHD, EHT - - -
20 EHD - - - EHD
(2)
- - -
1. Two numbers indicate end connection by nominal valve size. For example, 3 x 2 indicates 3 inch end connection with NPS 2 valve size.
2. CL2185
Table 2. Liquid Flow Coefficients, C
v
, at Maximum
Travel with Equal Percentage Cage (Modified Equal
Percentage Characteristic) (NPS 8 through 14
Valves)
(1)
VALVE
DESIGN
PRESSURE
RATING
VALVE SIZE, NPS
8 and 10x8 12 and 14x12
EHD, EHT
CL1500 912 1830
CL2500 584 1010
1. See Fisher Catalog 12 for additional sizing data.
Features (continued)
n Long Thermal-Cycle Life—The seat ring design
minimizes operational stresses, thereby reducing
chances of distortion and resultant leakage caused
by temperature cycling. The hung cage design
allows thermal expansion of the cage without
affecting the seat ring gasket loading.
n Operational Economy—Balanced trim constructions
reduce forces acting on the valve plug, thus
reducing actuator thrust requirements and
permitting the use of smaller actuators. This,
combined with capacities higher than comparably
priced globe valves, makes the NPS 8 through 14
(including 14x12 and 16x12) EH Series valves very
economical for high-pressure, high-flow service.
Actuator selection for NPS 20 valves can be made
from electromechanical or electrohydraulic styles
that use readily available power sources.
n Reliability—All aspects of the control valve (material
selection, trim components, packing, and control
accuracy) are designed, built, and tested to assure
performance and reliability. Extensive metallurgical
evaluation results in state-of-the-art cage, valve
plug, and stem materials that help ensure trim life
and dependable performance.
n Control Accuracy—The NPS 20 cage and valve plug
deliver accurate control of high pressure and high
capacity flow. Each cage has milled openings and is
flow tested for the required flow characteristic.
With precise, accurate cage openings, accurate
installed characteristics result; valves in parallel
have the same flow at the same plug position. The
cone-shaped plug reduces fluid turbulence, helps
ensure plug stability, and aids positioning accuracy.
n Easy Maintenance—The bonnet lifts off to allow trim
access. The separate seat ring and cage allow parts
removal and maintenance. The globe configuration
reduces the uneven trim wear and resultant