TVI - Wafer Check Valves

Unit of Measure

Items	DN-1-1/2 1-1/2 Inch (in) Wafer Check Valve	DN-2 2 Inch (in) Wafer Check Valve	DN-2-1/2 2-1/2 Inch (in) Wafer Check Valve	DN-3 3 Inch (in) Wafer Check Valve	DN-4 4 Inch (in) Wafer Check Valve
Description	N/A
Brands	N/A TVI
Type	N/A Wafer
Nominal Size	N/A 1-1/2 in	N/A 2 in	N/A 2-1/2 in	N/A 3 in	N/A 4 in
Dimension D1	N/A 0.89 in	N/A 1.26 in	N/A 1.57 in	N/A 2.13 in	N/A 2.76 in
Dimension D2	N/A
Dimension D3	N/A 3.76 in	N/A 4.30 in	N/A 5.12 in	N/A 5.71 in	N/A 6.45 in
Dimension P	N/A 1.38 in	N/A 1.77 in	N/A 2.36 in	N/A 2.83 in	N/A 3.54 in
Dimension L	N/A 0.63 in	N/A 0.79 in	N/A 0.79 in	N/A 0.79 in	N/A 0.87 in
Dimension H	N/A 0.99 in	N/A 1.80 in	N/A 2.00 in	N/A 2.90 in	N/A 3.60 in
Dimension R	N/A 68 in	N/A 73 in	N/A 75 in	N/A 73 in	N/A 72 in
Working Pressure¹	N/A 145 psi
Pressure to Open	N/A 0.1 psi
Required Back Pressure	N/A 1 psi
Weight Per Valve	N/A 1 lb
Flow Coefficient Value (Cv)	N/A 26	N/A 58	N/A 77	N/A 105	N/A 224
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
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
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.
Applications	N/A Water and Waste Treatment Chemical Industry Environmental Industry Process Industry Systems Engineering
Testing Procedure	N/A Testing performed on Polyvinyl Chloride (PVC)/Ethylene Propylene Diene Monomer (EPDM) valves at 73 ºF water temperature, non-shock.
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.