TECVAL VW-20

VW20-06 - TECVAL,S.L., 2025 all rights reserved.

VW-20
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.

Features

	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.

Options

	NBR seats. B
	High working pressure 160 bar (2300 PSI). I
	NEOPREN seats. N
	FPM seats. VI
	Male connections.

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"
A	75	75	90	97	102	125
B	72	72	82	102	102	117
C	15	15	20	30	30	38
Order codes
BSP	8071	8081	8101	8131	8141	8201
NPT	8072	8082	8102	8132	8412	8202
SW	8073	8083	8103	8133	8413	8203
BW Sch. 40S	8074	8084	8104	8134	8414	8204
Grooved	-	8085	8105	8135	8145	8205

* Dimensions in mm

Materials

Nº	Part	AISI-316L A4	SuperDuplex AS
1	Body	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
2	Seat	EPDM	EPDM
3	Stem	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
4	Spring	Superduplex (1.4410/ 1.4501)	Superduplex (1.4410/ 1.4501)
5	Bonnet	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
6	Centering	Polyethylene	Polyethylene
7	O-ring	EPDM	EPDM
8	End connection	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
9	Screw	AISI-316 (1.4401)	AISI-316 (1.4401)
10	Grower Washer	AISI-316 (1.4401)	AISI-316 (1.4401)
11	Nut	AISI-316 (1.4401)	AISI-316 (1.4401)

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:
8102 AS The reference required to place the order is 8102AS .

Tests

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.

Packaging

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.