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TVI Valves
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Thermoplastic Butterfly Valves 8"-24" 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.
Unit of Measure

Specifications

Brands

 N/A TVI

Type

 N/A Wafer

Weight Per Valve

 N/A 322 lb

Flow Coefficient Value (Cv)

 N/A 14200
Torque1 N/A 50 psi8075 in·lb

ANSI Dimensions

Size

 N/A 20 in

Dimension D1

 N/A 19.70 in

Dimension D2

 N/A 25.00 in

Dimension n

 N/A 20 in

Diameter e

 N/A 1.26

Dimension D3

 N/A 28.74 in

Dimension L

 N/A 7.20 in

Dimension L1

 N/A 7.48 in

Dimension H1

 N/A 14.37 in

Dimension H2

 N/A 15.94 in

Dimension H3

 N/A 5.12 in

Dimension K

 N/A 12.99 in

Dimension L2

 N/A 4.57 in

Dimension L3

 N/A 11.22 in

Dimension D4

 N/A 15.98 in

Body Test Pressure

 N/A 133 psi

Seat Test Pressure

 N/A 90 psi

Working Pressure

 N/A 75 psi

Material of Construction

Materials of Construction2 N/A Part - Body
Pcs - 1
Material - Polyvinyl Chloride (PVC), Polypropylene (PP), Polyvinylidene Fluoride (PVDF), and Chlorinated Polyvinyl Chloride (CPVC) (available to 14")

Part - Seat
Pcs - 1
Material - Ethylene Propylene Diene Monomer (EPDM), Viton®, and Butadiene Rubber (BUNA N)

Part - Disc
Pcs - 1
Material - Polyvinyl Chloride (PVC), Polypropylene (PP), Polyvinylidene Fluoride (PVDF), and Chlorinated Polyvinyl Chloride (CPVC) (available to 14")

Part - Disc O-Ring (A)
Pcs - 2
Material - Ethylene Propylene Diene Monomer (EPDM), Viton®, and Butadiene Rubber (BUNA N)

Part - Disc O-Ring (B)
Pcs - 2
Material - Ethylene Propylene Diene Monomer (EPDM), Viton®, and Butadiene Rubber (BUNA N)

Part - Stem
Pcs - 1
Material - SUS410, SUS304, and SUS316 Stainless Steel

Part - Stem O-Ring
Pcs - 2
Material - Ethylene Propylene Diene Monomer (EPDM), Viton®, and Butadiene Rubber (BUNA N)

Part - Gear Box
Pcs - 1
Material - Cast Iron

Part - Gear Box Cap
Pcs - 1
Material - Cast Iron

Part - Side Cap
Pcs - 1
Material - Cast Iron

Part - Indicator Plate
Pcs - 1
Material - Polyvinyl Chloride (PVC)

Part - Gear
Pcs - 1
Material - Forged Steel

Part - Oil Seal
Pcs - 1
Material - Ethylene Propylene Diene Monomer (EPDM)

Part - Bearing
Pcs - 1
Material - Heat Treated Steel

Part - Adjustable Bolt
Pcs - 2
Material - SS41 Stainless Steel

Part - Gearing
Pcs - 1
Material - SS41 Stainless Steel

Part - Set Pin
Pcs - 1
Material - Steel

Part - Hand Wheel
Pcs - 1
Material - Cast Iron

Part - Tightening Bolt
Pcs - 4
Material - SUS304 Stainless Steel

Construction

Body

 N/A Polyvinyl Chloride (PVC), Chlorinated Polyvinyl Chloride (CPVC) (Available to 12"), ASTM D-1784
Polypropylene (PP), ASTM D-4101
Polyvinylidene Fluoride (PVDF), ASTM D-3222

Disc

 N/A Polypropylene (PP), ASTM D-4101 (Standard 2" - 24" in PVC & PP valves)
Polyvinyl Chloride (PVC), Chlorinated Polyvinyl Chloride (CPVC), ASTM D - 1784 (CPVC disc standard in CPVC valves)
Polyvinylidene Fluoride (PVDF), ASTM D-3222

Shaft

 N/A ASTM A-240, TYPE 410 Stainless Steel (Standard) 304 Stainless Steel, 316 Stainless Steel, and Titanium available

Seal/Seat

 N/A Ethylene Propylene Diene Monomer (EPDM)
Fluorocarbon, Viton® (Dupont Dow Elastomers)
Fluorel (3M Corp.)

Hardware

 N/A 2" Thru 24" 304 Stainless Steel

Gear Box

 N/A Cast Iron Housing ASTM A-53, Epoxy Coated

Testing Procedure

Testing Procedure

 N/A Every valve is tested for bubble tight shutoff with Polyvinyl Chloride (PVC)/Ethylene Propylene Diene Monomer (EPDM) valves at 73 ºF water temperature.

Additional Information

Additional Information

 N/A 2"-24" valves shall have epoxy coated gear actuators with handwheel. 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.

Note

Note

 N/A Other materials available upon request.
Not recommended for compressed air or gas service.
  • 1 Includes 30% Safety Factor
  • 2 Viton® is a trademark of DuPont Performance Elastomer.