TECVAL_check-valves

VW00-02 - TECVAL, S.L., 2026 all rights reserved.

VW-00
Wafer Type Check Valve between flanges EN1092-1 or ASME B16.5 From PN16 to PN250 \| From Class 150 to Class 1500
TECVAL manufactures its VW-00 Wafer Type Check Valve. Developed by TECVAL, it is an exclusive and totally innovative use of the seal and to work between flanges. Unique in the market with Superduplex spring. Its compact design guarantees a total hold-up, even with high volatile gases, fluids, steam,...etc.

Features

	Standard Superduplex Spring.
	Face to Face dimensions acc. to EN558-2, line 52.
	Compact design.
	No maintenance required.
	Easy mounting in any position.
	PN16 / PN63 / PN100 / PN250.
	Class 150 / Class 600 / Class 1500.
	100% tested.

Options

	NBR seats. B
	FPM seats. VI
	NEOPREN seats. N

Technical data
Max. Pressure	Up to 250 bar \| Up to Class 1500
Temperatures	-20ºC/200ºC (-4ºF/392ºF)
Dimensions	DN15	DN20	DN25	DN32	DN40
A	25	31.5	35.5	40	45
B Min.	44	54	63.5	73	83
B Max.	70	80	90	100	115
Horizontal Oberture Pressure (mbar)	145	70	35	19	23
Order codes
	8150	8200	8250	8320	8400

* Dimensions in mm

Materials

Nº	Part	AISI-316L A4	SuperDuplex AS
1	Body	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
2	Stem	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
3	Spring	Superduplex (1.4410/ 1.4501)	Superduplex (1.4410/ 1.4501)
4	Bonnet	AISI-316L (1.4404)	Superduplex (1.4410/ 1.4501)
5	Seat	EPDM	EPDM
6	Centering	Polyethylene	Polyethylene

Special alloys

Among the wide range of alloys existing, TECVAL has selected these materials considered by our customers as most suitable, which we stock to ensure a quick and effective supply. Whether you need further information about our special alloys valves, please address your inquiry to our Technical Department.

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.

An example of valve and one option:

Wafer Type Check Valve VW-00 DN25 Class 600 Superduplex with NBR seat:

8250 B AS The reference required to place the order is 8250BAS .

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 5) can be made of different materials (NBR, FPM & NEOPREN) upon request, considering the working conditions and fluid of the valve. For further information, please contact our Technical Department.

VW20-07 - TECVAL,S.L., 2026 all rights reserved.

VW-20
3-Pieces Forged Check Valve Working Pressures: 100 \| 200 bar (1500 \| 2900 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 200 bar (2900 PSI). I
	NEOPREN seats. N
	FPM seats. VI
	Male connections.

Technical data
Max. Pressure	Standard working pressure: 100 bar (1500 PSI) High working pressure 200 bar (2900 PSI)
Temperatures	-20ºC/200ºC (-4ºF/392ºF)
Dimensions	1/2"	3/4"	1"	11/4"	11/2"	2"
A	73	73	88.5	100	100	114
A Grooved / Male	-	121	127.5	160	160	185
B	70	70	78	97	97	109
C	15	15	20	30	30	38
Horizontal Oberture Pressure (mbar)	145	145	70	35	19	23
Order codes
BSP	8071	8081	8101	8131	8141	8201
NPT	8072	8082	8102	8132	8142	8202
SW	8073	8083	8103	8133	8143	8203
BW Sch. 40S	8074	8084	8104	8134	8144	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)

Special alloys

For valves in other alloys, please address your inquiry to our Technical Department.

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 2) and O-ring (position 7) 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.

VW70-00 - TECVAL,S.L., 2026 all rights reserved.

VW-70
3-Pieces Check Valve Working Pressures: 100 \| 160 bar (1500 \| 2300 PSI)
The Tecval VW-70 3-Pieces Check Valve due to its 3-Pieces design allows easy and safe assembly. Unique in the market with Superduplex spring. Specially 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.
	Three pieces to allow a full disassembling.
	No maintenance required.
	Easy installation in any position.
	100% tested.

Options

	High working pressure 160 bar (2300 PSI). I
	NBR seats. B

Technical data
Max. Pressure	Standard working pressure: 100 bar (1500 PSI) High working pressure 160 bar (2300 PSI)
Temperatures	-20ºC/200ºC (-4ºF/392ºF)
Dimensions	2½”	3"	4"	6"
A	137	178	203	223
A Grooved	195	232	257	276
B	156	205	240	270
C	49	62	78	100
Horizontal Oberture Pressure (mbar)	37	28	25	9
Order codes
BSP	8221	8311	-	-
BW Sch.40s	8224	8314	8414	8624
NPT	8222	8312	-	-
VIC Grooved	8225	8315	8415	8625

* Dimensions in mm

Materials

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

Special alloys

For valves in other alloys, please address your inquiry to our Technical Department.

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-70 3"BW PN160 in Superduplex:
8314 I AS .The reference required to place the order is 8314IAS .

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 5) and O-ring (position 6) can be offered optionally in Nitrile (NBR) B

Check Valves