CENTER
LINE
3201 Walnut Avenue, Long Beach, CA 90807
562/426-2531
FAX 562/490-9546
1.
2.
3.
4.
5.
6.
7.
8.
Check the packing list against the valve received to
verify that the size, material, and trim are correct.
Check to make sure that the valve and operator were not
damaged during shipment.
When lifting the valve, take care to avoid damage to the
flange faces, disc sealing edge, or operator.
If the valve is to be stored before being installed, it should
be protected from harsh environmental conditions.
Store the valve with the disc in the “almost closed”
position to protect the sealing edge and the seat.
Keep the valve in a clean location, away from dirt, debris
and corrosive materials.
Keep the valve in a dry area with the flanges protected
and on a suitable skid or pallet.
Keep the valve in a cool location if possible, out of direct
sunlight.
Opening Rotation
The Center Line valve disc can rotate 360° without damag-
ing the valve or elastomer seat. The valve is designed to
open with either clockwise or counterclockwise rotation of
the shaft.
Valve Ratings
Center Line valves are intended for use at the pressure
indicated on the nameplate attached to each individual
valve. Check the valve operating temperature and pressure
rating before proceeding with installation.
4
INSTALLATION RECOMMENDATIONS
SECTION 2
Valve and Flange Preparation
If the valve and mating pipe are properly prepared for
installation, future problems can be avoided. All valve seat
and pipe flange faces should be free of dirt, grit, dents, or
surface irregularities which may disrupt flange sealing and
cause external leakage. The valve disc sealing surface
should also be inspected to eliminate any dirt or foreign
material that will adversely affect the operation of the valve.
Installation Position
To prevent damage to the disc and seat during installation,
the valve disc should be slightly open but not extending
beyond the valve liner face. Positioning the disc in this
“almost closed” position will reduce seat interference and
initial torque build-up during valve installation.
In general, it is preferable to install RSBFV's with the shaft
in a horizontal orientation. In this position, shaft and disc
weights are evenly distributed, minimizing seat wear.
Additionally, any foreign matter which may accumulate at
the bottom of the disc and shaft is effectively removed
each time the valve is opened.
Center Line butterfly valves are designed to operate be-
tween two flanges. If the valve installation calls for the use
of one pipe flange only, a Lug style valve with Dead End
Service feature must be used.
Disc Clearances
Prior to installing the valve, it is important to make sure the
ID of the pipe and the pipe flanges are large enough to allow
the disc edge to swing into the opening without interference.
Damage to the disc edge can severly affect the performance
of the valve. Flange and pipe schedule compatibility for
Center Line valves is shown in Section 1 of this manual.
Valve Seat Position
All Center Line butterfly valves are completely bi-directional,
so installation is not dependent on seat orientation. For Center
Line Series 800 Check Valves, every effort should be made for
installation with backflow protection (no flow) into the seat side
of the valve. Bubble-tight shutoff will be achieved in this
orientation with 25 to 150 psi ∆P across the valve.
Unpacking and Storage Instructions
Installation Tools
The only tool required in the installation of a Center Line
RSBFV is a wrench suitable for tightening the flange bolts
and/or nuts required to secure the valve in-line. A hoist may
be required to help manipulate valves 10" and larger. Smaller
sized valves can usually be installed by hand. Temporary
pipe supports may be used to keep mating flange faces
parallel in order to aid in valve installation.
Required Bolting
The table outlined on Page 7 is furnished to provide informa-
tion regarding the size, type, and quantity of bolting recom-
mended for the installation of Center Line RSBFV's. This
table is intended for use as a planning and procurement
guide. All recommendations are based on pipe flanges in
accordance with ANSI 125/150 specifications. Flange bolt-
ing is not included with the valve shipment.
To Next Page
Loading...
Need help?
General