Description - Fisher HPA Instruction Manual

HP and HPA Valves
July 2017
Table 1. Specifications
End Connection Styles and Ratings
Flanged: Consistent with CL900, CL1500, and CL2500
per ASME B16.34
Socket Welding: Consistent with CL900, CL1500, and
CL2500 per ASME B16.34
Buttwelding: Consistent with CL900, CL1500, and
CL2500 per ASME B16.34
Also see table 2
Shutoff Classifications
See table 3
C‐seal trim: High‐temperature, Class V.
See table 4
TSO (Tight Shutoff) trim: See tables 5 and 6
Flow Characteristic
Standard Cage: J Equal percentage, J Modified
equal percentage, or J Linear
Standard Cage with Micro‐Form Valve Plug: (HPS and
HPAS only): J Equal percentage or J Modified equal
percentage
Standard Cage with Micro‐Flute Valve Plug: (HPS and
HPAS only): J Equal percentage or J Modified equal
percentage
1. EN (or other) ratings and end connections can usually be supplied; consult your Emerson sales office.
2. CL900 and CL1500 globe valves are identical for NPS 1 and 2 valves. CL900 and CL1500 globe valves for NPS 3, 4, and 6 valves, however, are not identical.
3. The centerline‐to‐face dimension for CL2500 NPS 1 and 2 HPA valves does not conform to ANSI/ISA S75.12.
4. The pressure or temperature limits in this manual and any applicable standard limitations should not be exceeded.
5. HPS and HPAS valves may be used flow down for on‐off service only or where further limited by trim design. HPAS valves may be used flow down for erosive service.

Description

HP Series high‐pressure globe and angle valves (figure 1) have metal seats, cage guiding, quick change trim, and
push‐down‐to‐close valve plug action. HPD, HPAD, HPT, and HPAT valves use balanced valve plugs. HPS and HPAS
valves use an unbalanced valve plug. To provide a seal between the cage and a balanced valve plug, the HPD and HPAD
valve plugs use piston rings; the HPT and HPAT valve plugs use a pressure‐assisted seal ring. A Whisper Trim or
WhisperFlo cage can be used with an HPD, HPAD, HPS, HPAS, HPT, or HPAT valve plug. A Cavitrol III cage can be used
with an HPS, HPAS, HPT, or HPAT valve plug.
C‐seal trim is available for HPD valves, CL900 and CL1500, in sizes NPS 3, 4, and 6; and for HPAD valves, CL900 and
CL1500 in sizes NPS 4, 6, and 8.
With C‐seal trim, a balanced valve can achieve high‐temperature, Class V shutoff. Because the C‐seal plug seal is
formed from metal (N07718 nickel alloy) rather than an elastomer, a valve equipped with the C‐seal trim can be
applied in processes with a fluid temperature of up to 593_C (1100_F), provided other material limits are not
exceeded.
2
(1,2,3,4)
Standard Cage with Micro‐Flat Valve Plug: (HPAS
only): J Linear
Cavitrol III, Whisper Trim
™
Cage: J Linear
Special cages: Special characterized flow cages are
available. Consult your local
Local Business Partner.
Flow Direction
Standard Cage
J HPD and HPAD: Normally flow down
J HPS and HPAS: Normally flow up
J HPAS Micro‐Flat: Flow down
J HPT and HPAT: Normally flow down
J HPS and HPAS Micro‐Form: Flow up only
Cavitrol III Cage: Flow down
Whisper Trim III or WhisperFlo Cage: Flow up
Approximate Weights (valve body and bonnet
assemblies)
See table 2
Additional Specifications
For specifications such as materials, valve plug
travels, and port, yoke boss, and stem diameters, see
the Parts List section
Instruction Manual
D101634X012
III, or WhisperFlo
™ ™
Emerson sales office or
(5)