Data Sheet

V260 Valve
D102352X012
Product Bulletin
51.3:V260
July 2014
3
 Heavy Duty T runnion-- The ball trunnions are
designed for demanding applications requiring long
service l ife, with a reduction in maintenance time
and costs.
 Broad Hydrodynamic Applications-- Single, dual,
and three-stage attenuators for the V260B may be
provided for a varying range of applications. A K
c
value of 1.0 is achievable depending on service
conditions.
 Flexible Applications-- The attenuator is active
throughout the ball rotation for very demanding
services or a characterized attenuator is used to
matchtheserviceconditions(seefigure2).
Table 1. Aerodome and Hydrodome Trim Benefits Comparison
Benefits Typical Competitive Device
V260A with Aerodome
Attenuator
V260B with Hydrodome
Attenuator
Up to -20 dBA aerodynamic noise attenuation No Yes N/A
Excellent attenuation effect at critical opening position No Yes Yes
High Density (Full) or characterized attenuation No Yes Yes
2or3stageoptions No Yes Yes
Effective bidirectional attenuation option No Yes Yes
Integrated ball, shaft, and attenuator design for best
throttling dynamics
No Yes Yes
Dual seal option No Yes Yes
Ball seal exchange without actuator removal No Yes Yes
K
c
improved versus unattenuated device Yes N/A Yes
Double block-and-bleed option No Yes Yes
Overall ease of maintenance No Yes Yes
Trunnion-mounted ball for excellent wear resistance Yes Yes Yes
Low profile for ease of piping Yes Yes Yes
Table 2. Standard Materials of Construction
Part Material
Valve Body LF2 Carbon Steel
Ball WCC Carbon Steel
Seal POM with S31600 SST Seal Blank or PTFE/PEEK with S31600 SST Seal Blank
Dome Attenuator S17400 SST
Shaft S17400 SST H1075 or S17400 SST H1150 DBL
Wave Spring S17700 SST or N07750
Tailpiece LCC Carbon Steel
Tailpiece Mounting Bolting B7 Steel or B7M Steel
Bearing Plate Carbon Steel
Bearings S30400 SST with Aramid liner
Thrust Washer Carbon filled PTFE
Packing Box Housing LCC Carbon Steel
Packing PTFE/Carbon filled PTFE
Packing Bolting B7 Steel, B7M Steel, or B8M Class 2 SST
Packing Follower, Packing Box Ring Annealed S31600 SST
Groove Pins B8M SST
O-Rings Nitrile
Actuator Mounting Bolting Steel Grade 5