Instruction Manual
D104197X012
NPS 8 CHP Valve
September 2016
2
Table 1. Specifications
Size/Pressure Class/Body Materials
NPS 8 / CL2500 / WCC, WC9
Maximum Inlet Pressure and Temperature
(1)
Consistent with ASME B16.34 except CHPT PEEK
anti‐extrusion seal ring construction. Maximum
temperature limit is 380
_
C (716
_
F).
End Connection Style
Buttweld Ends :
All buttwelding end schedules per
ASME B16.25
Bonnet and Body‐to‐Bonnet Bolting
Plain Bonnet:
5 inch H Yoke Boss
Studs:
Steel A 193‐B7/NCF2
Nuts
: Steel A 194‐2H/NCF2
Flow Coefficient
Maximum Cv:
514
Km:
0.74
Fl:
0.86
Modified Equal Percentage
Flow Direction
Flow down and up
Stem Diameter
1‐1/4 inch VSC (Valve Stem Connection)
Shutoff Classification per ANSI/FCI 70‐2 and IEC
60534-4
(2)
CHPT:
Class IV (standard), Class V (optional)
CHPD:
Class V with Bore seal (standard)
Weight
Estimated Valve Body and Bonnet Assemblies 810 kg
Please consult Singapore SD&S for any queries
1. The pressure/temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.
2. For Boiler feedwater application, proper use of a block valve during closing of the control valve is recommended to minimize control valve trim damage.
Description
The CHP globe valve (figure 1) has a metal seat, cage guiding, quick change trim, and push-down-to-close valve plug
action. The valve uses a balanced valve plug. To provide a seal between the cage and a balanced valve plug, the
balanced valve plug uses a PEEK (Poly Ether Ether Ketone) anti-extrusion ring with a pressure-assisted spring-loaded
seal ring.
Educational Services
For information on available courses for the Fisher CHP valve, as well as a variety of other products, contact:
Emerson Process Management
Educational Services - Registration
Phone: 1-641-754-3771 or 1-800-338-8158
E-mail: [email protected]
http://www.emersonprocess.com/education
Specifications
Specifications for the CHP valves are shown in table 1.
