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DESIGN ADVANTAGES
- Lower initial cost compared to other valve
types.
- Easier installation due to narrow face to face
affords lowest installed cost.
- Designed to fit between ANSI D-16.5 Class 150
flat faced flanges.
- Strong, one piece molded body design.
- One piece standard S.S. through shaft for
positive disc rotation and support.
- Standard polypropylene (PP) disc for higher
(180°F) temperature service.
- Full body liner seat with integral flanges
(eliminates the need for flange gaskets) ribbed for positive flange
seating with minimum required torque.
- Standard PVC body and S.S. shaft are
effectively isolated from the flow media by the full liner seat.
- Standard S.S., carbon steel plated, or epoxy
coated external hardware for added corrosion resistance.
- 2" - 8" valves have spring loaded
latch lever for positive disc positioning and shut-off.
- 8" - 24" valves have epoxy coated
self-locking worm gear actuators for ease of operation and accurate flow
control.
- Electric and pneumatic actuation packages
available.
- Locking handles available.
- Stem extensions, universal joints, floor stands
available in a variety of materials.
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Materials Of Construction
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Item
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Parts
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Pcs
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Materials
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1
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Body
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1
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PVC,PP,PVDF
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2
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Disc
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1
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PVC,PP,PVDF
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3
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Stem
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1
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SUS410,
SUS304, SUS316
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4
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Stem O-Ring
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2
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EPDM,VITON®
BUNA N
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5
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Washer
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1
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SUS304
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6
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Seat
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1
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EPDM,VITON®
BUNA N
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7
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Disc O-Ring
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2
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EPDM,VITON®
BUNA N
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8
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Disc O-Ring
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2
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EPDM,VITON®
BUNA N
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9
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Stem Retainer
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1
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SUS304
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10
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Retainer Cap
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1
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PVC,PP
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11
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Positioner
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1
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SUS304,
8" use SS41
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12
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Screw
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3
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SUS304
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13
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Handle
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1
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ABS
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14
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Inserted Metal
of Handle
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1
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CS
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15
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Nut
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1
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PVC coated
brass, SUS304
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16
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Hand Lever
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1
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SUS304, SUS41
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17
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Spring
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1
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SUS304
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18
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Set Pin
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1
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Brass
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TVI BUTTERFLY VALVE (2" - 8")
DESIGN
SPECIFICATIONS
Thermoplastic Butterfly Valves 2"-8" are wafer style to fit between
ANSI B16.5 Class 150 flanges. Disc is smooth and contoured for lowest
possible pressure drop ( highest Cv). Shaft is 410 S.S. and of one piece,
through shaft design, with square drive through entire length of blade.
2" - 6" valves shall be complete with a spring loaded minimum 11
position latch lever. 8" valves shall be either spring lever or gear
actuated as required or specified. Seat liners shall be full faced with
integral, ribbed flanges. No auxiliary gaskets shall be required for
installation. Seat liners shall effectively isolate the body and shaft from
the flow media. Seat liners shall also thermally insulate the body from the
internal operating temperature. Valve liner and seals are replaceable.
Materials of construction shall be: (select as required for service)
BODY
PVC,ASTM D-1784, (Standard
2-14") PP and PVDF available
PP, ASTM D-4101 (Standard 16-24") PVDF available
PVDF, ASTM D-3222
DISC
PP, ASTM D-4101 (Standard)
PVC,ASTM D-1784
PVDF, ASTM D-3222
SHAFT
ASTM A-240, TYPE 410 S.S.
(Standard) 304 S.S., 316 S.S. and Titanium available
SEALS / SEAT
EPDM, Ethylene Propylene
Diene Monomer
Fluorocarbon, VITON ®
Nitrale (BUNA N)
HARDWARE
2" THRU 24" 304
S.S. 8" size positioner plate 410 S.S. Chrome Plated
LEVER
ABS, ASTM D-1788
GEAR BOX
Cast iron housing ASTM A
-53, Epoxy coated
VITON ® is a registered trademark of
DuPont Dow Elastomers.
OTHER MATERIALS AVAILABLE UPON REQUEST.
Not recommended for compressed air or gas service
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