Emerson Fisher V260 Brochure download pdf

Technology

Summary

Design V260 Control Valve

For more Severe Service solutions see us at www.fishersevereservice.com.

Emerson Process Management

Marshalltown, Iowa 50158 USA

www.fishersevereservice.com

The Design V260 is

a full bore control

valve designed from

the ground up with

features for

optimized pressure,

flow and process

control. An integral

attenuator controls

noise and vibration

from high pressure

drop liquids and

gases. The splined

shaft connection to

the actuator

reduces lost motion.

Features:

Superior Throttling Performance - The splined ball

to shaft connection, splined shaft to actuator

connection, double power-end bushing assemblies, and

trunnion guiding, all provide improved dynamic control.

Aerodynamic Performance - Up to 20 dBA acoustical

attenuation can be achieved for the V260A within a

single stage construction. Dual-stage construction can

provide up to 25 dBA attenuation.

Improved Service Life - The attenuator is an integral

part of the valve assembly. The seal wipes the ball

surface, not the attenuator, promoting increased

service life.

Trim Versatility - Key valve components, such as

valve body, ball, shaft and bearings, are interchangeable

between the Design V260A, V260B and V260C. This

feature allows you to reduce your spare parts inventory

and maintenance time.

Sour Gas Service and Sour Crude Oil Capability -

Optional materials are available that comply with NACE

Standard MR0175.

Tight Shutoff - Self-adjusting seal(s) that are pressure

assisted provide tight shutoff for longer reliable service.

The design incorporates a heavy duty S31600 stainless

steel carrier that retains the composition seal for full-

rated pressure drop service.

Heavy Duty Trunnion - The ball trunnions are

designed for demanding applications requiring longer

service life, 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 cavitation applications. A Kc 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 match

the service conditions.

Characterization - Special characterized cages are

available to provide customer specified rangeability for

specific system requirements.

Operational Overview:

The Fisher V260 is designed for throttling service and

differs significantly from typical ball valves developed as

block valves. Special attention is applied to the friction

and shut-off capability of the sealing mechanism to

minimize stick-slip on rotation (stiction). Dimensions

are controlled to create a pressure assist to the lightly

biased seat ring.Other major features supporting the

throttling design objectives are the splined shaft to ball

and splined shaft to actuator connections that minimize

lost motion. The rugged double drive bearing concept

and the opposite stub shaft bearing, control the

dynamic and shut-off forces unique to throttling

applications.

1 2

Summary of Contents

Page 1 - Design V260 Control Valve

Technology SummaryDesign V260 Control ValveFor more Severe Service solutions see us at www.fishersevereservice.com. Emerson Process ManagementMarshall

Page 2 - Typical Applications:

 Characterization: Can be done based on application for flow Ability to provide high rangeability Special passage size Special passage orientation