Data Sheet

Rotary Valve Selection Guide
D102550X012
Product Bulletin
40:002
January 2013
7
Fisher POSI-SEAL High-Performance Butterfly Valves
(continued)
Figure 6. Fisher POSI-SEAL High-Performance Butterfly Valves (continued)
A81 VALVE
A31A VALVE
W9461
W9134-2
A81 A31A A31D
Applications
On/off service, rack-and-pinion actuator for
temperatures from -129 to 454_C
On/off service, high-temperature and cryogenic
applications; -196 to 816_C
On/off and throttling service, high-temperature
and cryogenic applications; -196 to 816_C
Style
Wafer and single flange Wafer and single flange Double flange
Sizes
NPS2,3,4,6,8,10,12 NPS 14, 16, 18, 20, 24 NPS 3, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24
Ratings
PN 10 to 40
CL150 and CL300
CL150 and CL300 CL150 and CL300
End Connections
Raised-face (RF) Raised-face (RF) and ring-type joint (RTJ) Raised-face (RF) and ring-type joint (RTJ)
Valve B ody Materials
EN: 1.0619 steel, 1.4409 stainless steel
ASME: SA216 WCC steel, SA351 CF3M stainless
steel
High-alloy materials are available
SA216 WCC steel or SA351 CF8M stainless steel
High-alloy materials are available
SA216 WCC steel or SA351 CF8M stainless steel
High-alloy materials are available
Disc Material
SA351 CF3M stainless steel SA351 CF8M stainless steel SA351 CF8M stainless steel
Seal Types (Material)
Soft (PTFE or UHMWPE) or Metal (S31600) Soft (PTFE), NOVEX, or Phoenix III Soft (PTFE), NOVEX, or Phoenix III
Flow Characteristics and Maximum Flow Coefficients
MaximumCvfrom83.7to5080 Maximum Cv from 4550 to 21,500
Rangeability
100 to 1
100 to 1 100 to 1
Shutoff Class
Soft Seal: SP-61
Metal Seal: SP-61
Soft Seal: Class VI
NOVEX Seal: SP-61
Phoenix III Seal: Class VI
Soft Seal: Bidirectional bubble-tight (Class VI or
better)
NOVEX Seal: Class V (standard); Class VI (optional)
Phoenix III Seal: Class VI
Available Actuators (refer to page 11)
FieldQ Bettis Fisher 2052, 1051, 1052, 1061 and Bettis