Series V30/V32 installation, operation, maintenance and
troubleshooting
Keystone is either a registered trademark of Emerson International Service AG or its affiliates in the United States
and/or other countries. All other brand names, product names, or trademarks belong to their respective holders.
1. General
Suggested installation orientation is with valve shaft horizontal or inclined from vertical. Unless
otherwise recommended by Emerson, mount the valve in the preferred direction with the directional
arrow pointing to the lower pressure side so that the front face of the disc will be upstream when
the valve is in the closed position. Thermal insulation of the body is mandatory for operating
temperatures above 200°C [392°F]. The Keystone marine high performance butterfly valve offers
the following body styles: Series V30 for wafer style and Series V32 for lug style.
2. Inspection
2.1
Carefully remove the valve from the shipping package (box or pallet) to avoid any damage
to the valve and, in the case of automated valves, to the electric or pneumatic/hydraulic
actuator or instrumentation.
2.2
Prior to installation, clean the inside of the valve. Insure that there are no solid objects such
as pieces of wood, plastic or packing materials within the valve or on the valve seat.
2.3
Inspect the seat and disc edge to insure that they were not damaged in handling. This is
especially important in the case of valves with ‘fail- open’ actuators.
2.4
Confirm that the materials of construction listed on the valve body are appropriate for the
service intended and are as specified.
2.5
Locate the directional arrow on the valve name plate that defines the preferred mounting
orientation in respect to the pressure. In most cases, the valve is properly installed when
the actual fluid flow or high pressure is acting on the front face of the disc when the valve is
closed.
2.6
Ensure that the packing seal cover screws are tight.
Emerson reserves the right to change the contents without notice
KVKEW-0149-EN-1309
Copyright © 2017 Emerson. All rights reserved.
Keystone Marine High Performance Butterfly Valves
Series V30 / V32 Installation & Operation Manual
Caution
The valve should be installed in the closed position to insure that the seat and disc are not
damaged during installation. Particular care should be taken with valves equipped with ‘fail
open’ actuators. Failure to insure proper handling may result in damage to the valve. If the
pipe is lined, confirm that the disc rotation does not contact the lining during the opening
stroke. Failure to confirm that the disc rotation does not contact the lining may result in
damage to the valve.
Important
Whenever possible, install the valve with the shaft in the horizontal position and, if possible,
with the cast-in disc stop located top-side of the pipe. If the shaft cannot be positioned
horizontally, position the shaft so that it is not on the vertical centerline in a horizontal pipe
run. This will minimize any depositing of solid particles present in the fluid into the lower
bearing.
KEYSTONE
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