CENTER
LINE
3201 Walnut Avenue, Long Beach, CA 90807
562/426-2531
FAX 562/490-9546
SERIES
BODY
DISC
SEAT
RATING
PSI
Valve Description
The Center Line Resilient Seat Butterfly Valve (RSBFV) is
designed for use in ANSI Class 150 piping systems and is
available in both Wafer and Lug style body designs. The
standard valve size range available is as follows:
• Series 200
200 psi Standard BFV
2" to 12"
150 psi Standard BFV
14" to 36"
• Series 205
200 psi Short Neck BFV
2" to 12"
• Series 225
285 psi BFV
2" to 24"
• Series 400
Damper Style BFV
2" to 12"
• Series 800
Check Valve
2" to 24"
Center Line Series 225 Butterfly Valve are also available
with an ANSI Class 300 bolt pattern for Lug bodies of sizes
2" through 12".
Valve Design Features
• The unique Center Line seat and disc design insures
positive valve sealing while maintaining low seating torque.
• All Center Line Butterfly Valve discs are precision ma-
chined to a half ball profile, providing a precise disc to seat
relationship.
• Center Line's cartridge style seat incorporates an elas-
tomer bonded to a phenolic stabilizing ring, eliminating
elastomer movement and reducing seat tearing or fatigu-
ing due to bunching.
• Center Line's basic three bushing design completely
isolates the valve shaft from the body, resulting in in-
creased control of the valve disc, lower valve seating
torque, and longer valve life.
• The Center Line cartridge seat has a much smaller mass
of elastomer than traditional boot seat designs, limiting
seat swell and the accompaning variations in seating
torque.
Flange and Pipe Schedule Compatibility
The Center Line RSBFV is designed to fit between standard
piping flanges as follows:
• ANSI 125 Cast Iron Flanges (All Sizes)
• ANSI 150 Steel Flanges, Schedule 40 (All Sizes)
• ANSI 150 Steel Flanges, Schedule 80 (2" to 10")
• ANSI 300 Steel Flanges, Schedule 40 (Series 225 Lug,
2" to 12" only).
When using Schedule 80 piping, special care must be taken
to make sure the valve is centered between the flanges to
prevent damage to the disc edge when opening or closing.
3
INTRODUCTION
SECTION 1
CENTER LINE
Long Beach, CA
Gasket Compatibility
In the Center Line butterfly valve and check valve design, the
elastomer seat extends beyond the valve face and provides
a leakproof seal between the valve and the mating pipe
flange faces. Gaskets are not needed and should not be
used when the valve is installed between standard weld
neck or slip-on type flanges.
Operating Pressures
All Center Line Series 200 and 205 Butterfly Valves are rated
at 200 psi bubble tight shut-off for sizes 2" to 12" and 150 psi
bubble tight shut-off for sizes 14" and larger. Center Line
Series 225 Butterfly Valves are rated for bubble tight shut-
off at 285 psi, while Series 400 Damper Valves which are not
designed for bubble tight shut-off have a body working
pressure of 200 psi. Center Line Series 800 Check Valves
are rated at a minimum pressure differential of 25 psi and a
maximum pressure differential of 150 psi for bubble tight
shut-off.
Product Identification
Each Center Line valve has an identification tag attached to
the valve body. Information on this tag includes the valve
Series Number, materials of construction for the Body, Disc,
and Seat, and the valve Pressure Rating.
