VW20-05 - TECVAL,S.L., 2023 all rights reserved.
3-Pieces Forged Check Valve
Working Pressures: 100 | 160 bar (1500 | 2300 PSI)

Tecval VW-20 3-Pieces Check Valve is a Forged design. Due to its 3-Pieces design allows easy and safe assembly. Unique in the market with Superduplex spring. The forged connections result a mechanical stronger and more durable product, especially suitable for working in high corrosive environment. They are manufactured in several sizes, connections and alloys, always under ASME B16.34.


Standard Superduplex Spring.
Unique design between forged Flanges.
Three pieces to allow a full disassembling.
No maintenance required.
Easy installation in any position.
100% tested.


NBR seats.  B 
Male-Female (MxF) end connections.  C 
High working pressure 160 bar (2300 PSI).  I 
Male-Male (MxM) end connections.  J 
NEOPREN seats.  N 
FPM seats.  VI 
Technical data
Max. Pressure Standard working pressure: 100 bar (1500 PSI) High working pressure 160 bar (2300 PSI)
Obert. Press Horizontal flow direction: 1 bar (14,5 PSI) Flow going down: 500 mbar (7,3 PSI)  /  Flow rising: please consult.
Temperatures -20ºC/200ºC (-4ºF/392ºF)
Dimensions 1/2" 3/4" 1" 11/4" 11/2" 2"
Order codes
BW Sch.40s271427182724274427482754
VIC Grooved-27192720274027492750

* Dimensions in mm
NÂșPartAISI-316L  A4 SuperDuplex  AS 
1 BodyAISI-316L (1.4404)Superduplex (1.4410/ 1.4501)
2 BonnetAISI-316L (1.4404)Superduplex (1.4410/ 1.4501)
3 StemAISI-316L (1.4404)Superduplex (1.4410/ 1.4501)
5 SpringSuperduplex (1.4410/ 1.4501)Superduplex (1.4410/ 1.4501)
6 End connectionAISI-316 (1.4401)Superduplex (1.4410/ 1.4501)
7 ScrewAISI-316L (1.4404)AISI-316L (1.4404)
8 Grower WasherAISI-316L (1.4404)AISI-316L (1.4404)
9 NutAISI-316L (1.4404)AISI-316L (1.4404)

Ordering information

References are formed by three parts:

 Valve Code  Look for it in the order codes chart on the previous page.
 Option/s  If required, add the code/s from the options section on the previous page (in alphabetical order).
 Material  Look for the code on the materials chart.

Example: Check Valve VW-20 1"NPT Superduplex:
 2722   AS  The reference required to place the order is 2722AS .



100% tested in accordance to API STANDARD 598, each valve is tested to check the leakage in the seats. Upon request, the corresponding materials and test certificates can be delivered with the valve.


All TECVAL valves are supplied packed in individual polyethilene airtight bags. End screw connections are protected with polyethilene caps. Everything is 100% recyclable.

Elastomers & Seats

Seat (position 4) and O-ring (position 10) can be made of different materials: Nitrile  B  , FPM  VI  or Neopren  N  , considering the working conditions. Likewise the seats can be made in other materials upon request.

C/Colom, 519 - Pol.Can Parellada - 08228-TERRASSA - Barcelona - SPAIN | Tel: +34 938 280 055 | email: tecval@tecval.es