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TVI Valves
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Unit of Measure

Specifications

Brands

 N/A TVI

Type

 N/A Wafer

ANSI Dimensions

Nominal Size

 N/A 18 in

Dimension D1

 N/A 13.78 in

Dimension D3

 N/A 21.1 in

Dimension P

 N/A 15.59 in

Dimension L

 N/A 2.67 in

Dimension H

 N/A 13.00 in

Dimension R

 N/A 70 in
Working Pressure1 N/A 30 psi

Pressure to Open

 N/A 0.3 psi

Required Back Pressure

 N/A 1 psi

Flow Coefficient Value (Cv)

 N/A 4935

Material of Construction

Materials of Construction

 N/A Part - Body
Pcs - 1
Material - Polyvinyl Chloride (PVC), Polypropylene (PP), Chlorinated Polyvinyl Chloride (CPVC), and Polyvinylidene Fluoride (PVDF)

Part - Flapper
Pcs - 1
Material - Polyvinyl Chloride (PVC), Polypropylene (PP), Chlorinated Polyvinyl Chloride (CPVC), and Polyvinylidene Fluoride (PVDF)

Part - Flapper Mounting Screw
Pcs - 1
Material - Polypropylene (PP)

Part - O-Ring
Pcs - 1
Material - Unplasticized Polyvinyl Chloride (UPVC) and Viton®

Part - Installation Device
Pcs - 1
Material - SS 316 Stainless Steel

Part - Spring
Pcs - 1
Material - SS 316 Stainless Steel

Construction

Body and Flapper

 N/A Polyvinyl Chloride (PVC), ASTM D-1784
Polypropylene (PP), ASTM D-4101
Polyvinylidene Fluoride (PVDF), ASTM D-3222

Flapper Mounting Screw

 N/A Polypropylene (PP), ASTM D-4101

Seals (O-Rings)

 N/A Ethylene Propylene Diene Monomer (EPDM)
Fluorocarbon, Viton® (Dupont Dow Elastomers)

Installation Device

 N/A 316 Stainless Steel

Connection

 N/A Wafer style to fit between ANSI B16.5 Class 150 Flanges

Options

 N/A 316 Stainless Steel Spring Assist
Spacer

Applications

 N/A Water and Waste Treatment
Chemical Industry
Environmental Industry
Process Industry
Systems Engineering

Design Advantages

Design Advantages

 N/A Vertical or Horizontal operation
Economic ~ Simple and durable construction
Compact ~ Requires little space in piping system
Easy Installation ~ Wafer body fits between standard ANSI flanges (2-1/2" & 3"valves require spacers)
Body Construction ~ Light Weight, Chemical Resistant, Non-Corrosive
Available with 316 SS Spring Assist.

Testing Procedure

Testing Procedure

 N/A Testing performed on Polyvinyl Chloride (PVC)/Ethylene Propylene Diene Monomer (EPDM) valves at 73 ºF water temperature, non-shock.

Note

Note

 N/A Wafer Checks are not full port valves. R = Disc angle in the open position
  • 1 Working Pressure for both Polyvinyl Chloride (PVC) and Chlorinated Polyvinyl Chloride (CPVC) Valves.