TVI Custom Valves
Custom Valve Solutions

Horizontal Swing Check Valve


TVI Valves
Flange Type (3/4"-8")
  • Lowest pressure drop compared to other check valve designs.
  • Top entry design for easy maintenance.
  • Can be installed in either vertical or horizontal piping system.
  • Minimal required back pressure to fully seat disc.
  • Full open stop to prevent disc over travel and insure proper closing action.
  • No metal internals to prevent the possibility of corrosion.
  • Full faced seat for drop tight shut-off.
  • Stainless steel external fasteners.
  • Designed to fit between ANSI B16.5 Class 150 flanges.

Schematics


ITEM PARTS PCS MATERIALS
1 Body 1 PVC,PP,CPVC,PVDF
2 Bonnet 1 PVC,PP,CPVC,PVDF
3 Disc 1 PVC,PP,CPVC,PVDF
4 Sheet Gasket Holder 1 PVC,PP,CPVC,PVDF
5 Swing Arm 1 PVC,PP,CPVC,PVDF
6 Disc Gasket 1 EPDM,VITON®TFE
7 Bonnet Gasket 1 EPDM,VITON®
8 Shaft   PVC,PP,PPG,PVDF
9 Washer 1"-3" 6 Sets
4"-8" 8 Sets
SUS304
10 Bolts SUS304
11 Nuts SUS304
12 Disc Holder   PVC,PP,PPG,PVDF
13 O-ring   EPDM,VITON®
14 Shaft Holder   PVC,PP,PPG,PVDF
15 Set Bolts 1"-2" - 1
21/2"-4" 3
5"-6"- 4
8"- 8
PVC, PP, PPG, PVDF
16 Set Pin 1 PVC, PP, PPG, 316 SS

VITON® and TEFLON® are trademarks of DuPont Performance Elastomers

Design Specifications


Swing Check Valves (3/4" - 8" Flanged)

Design Specifications

Thermoplastic Swing Check Valves 3/4"-8" flanged design shall employ molded thermoplastic body, disc assembly, bonnet, and shaft. Metal internals are not acceptable. Valves have a full faced disc seal. Valves require low back pressure for drop-tight seating. Valves are of low pressure drop design. Body has a full open disc stop to prevent over travel and insure proper closing action. Bonnet is full gasketed and fastened using stainless steel hardware. Valves are top entry design for ease of maintenance. Valves are suitable for vertical and horizontal installation. Flanged ends are designed for installation between ANSI B16.5 Class 150 flanges. Materials of construction shall be as follows: (select as required for service)

Body/Bonnet - PVC, ASTM D-1784, PP, ASTM D-4101, PVDF, ASTM D-3222

Disc Assembly / Shaft - PVC, ASTM D-1784, PP, ASTM D-4101, PVDF, ASTM D-3222

Seat/Seal - EPDM,Ethylene propylene diene monomer, Fluorocarbon, Viton® (DuPont Performance Elastomers), Fluorel (3M Corp.), PTFE (Polytetrafluoroethylene), Teflon® (DuPont Dow Elastomers)

External Fastners- 304 Stainless Steel