Instruction manual

Instruction Manual
D500248X012
A31D Valve
April 2014
2
A31D Valve Specifications and Materials of Construction
Table 1. Fisher A31D Valve Specifications
SPECIFICATION
Valve Body Size NPS 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, and 24
Pressure Rating Consistent with CL150 and 300 per ASME B16.34
Valve Body Materials
WCC Steel
CF8M Stainless Steel
Disk Materials CF8M Stainless Steel
End Connections Mates with RF flanges per ASME B16.5
Valve Body Style Double Flange
Shaft Connection
Spline (standard)
Keyed (optional)
Face-to-Face Dimensions
CL150: ISO 5752 Butterfly Valve Short Series
CL300: ISO 5752 Butterfly Valve Long Series
Shutoff
Soft Seal: Bidirectional ANSI/FCI 70-2 Class VI
NOVEX Seal: Unidirectional MSS SP-61
(1)
Phoenix III Seal: ANSI/FCI 70-2 Class VI
Flow Direction Reverse (flow direction is into the shaft side of the disk)
Flow Characteristic Approximately Linear
Disk Rotation Clockwise (CW) to close
1, 0.1 scfh per unit of NPS at 80 psi.
Description
The valve is available in a doubleflanged valve body design, with a variety of seals and internal components. The
pressureassisted seal provides tight shutoff against the full classpressurerangeforthespecifictype.Thesplinedshaft
combines with a variety of Fisher springanddiaphragm or pneumatic double-acting or spring-return piston actuators.
Maximum inlet pressure/temperature ratings are consistent with ASME CL150 and CL300.
Educational Services
For information on available courses for the Fisher POSI -SEAL A31D valve, as well as a variety of other products,
contact:
Emerson Process Management
Educational Services - Registration
P.O. Box 190
Marshalltown, I A 50158-2823
Phone: [phone] or 641-754-3771
FAX: [phone]
e-mail: [e-mail]