Unidirectional Valves

Unidirectional Valves are made of polyacetal and have retaining gaskets and stainless-steel springs, which guarantee a resistance of up to 95°C. It’s also possible to substitute certain components in accordance with the client’s needs (e.g.: Viton or silicon retaining gaskets; springs with different loads).
Unidirectional Valves, also called anti-suction or check valves, are used to turn off the flow of liquid when a depressive condition occurs on the water network, impeding the reflux and maintaining the inner pressure of the circuit stable.

External Diameter 8

VLA 01 DN8

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water
Diam. Features
8 Self-locking direct passage with teeth
Reopening load: 0.05 bar

VLA 02 DN8

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water
Diam. Features
8 Direct passage

Reopening load: 0.05 bar

External Diameter 10

VLA 01 DN10

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Direct passage

VLA 02 DN10

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Featuers
10 Self-locking direct passage with teeth

VLA 03 DN10

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Direct passage with filter for potable water

VLA 04 DN10

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Self-locking direct passage with teeth

VLA 01 DN10-

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Direct passage

VLA 02 DN10-

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Self-locking direct passage with teeth

VLA 02 DN10 A

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Self-locking direct passage with couter teeth

VLA 02 DN10-A

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
10 Self-locking direct passage with high teeth

External Diameter 14

VLA 01 DN14

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
14 Self-locking direct passage with teeth

VLA 02 DN14

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
14 Direct passage

External Diameter 15

VLA 01 DN15

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water
Diam. Features
15
Cylindrical model

VLA 02 DN15

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
15
Self-locking direct passage with teeth

VLA 03 DN15

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
15
Direct passage

External Diameter 18

VLA 01 DN18

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
18
Cylindrical model
Reopening load: 0.05 bar

External Diameter 20

VLA 01 DN 20

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Self-locking direct passage with teeth

VLA 02 DN 20

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Direct passage

VLA 01 DN 20 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Self-locking direct passage with teeth

VLA 02 DN 20 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Direct passage

VLA 03 DN 20 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Self-locking direct passage with teeth and frontal o-ring

VLA 04 DN 20 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
20
Direct passage and frontal o-ring

External Diameter 22

VLA 01 DN 22

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
22
Direct passage
Reopening load: 0.05 bar

External Diameter 25

VLA 01 DN 25

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Self-locking direct passage with teeth

VLA 02 DN 25

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Direct passage

VLA 01 DN 25 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Self-locking direct passage with teeth

VLA 02 DN 25 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Direct passage

VLA 03 DN 25 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Self-locking direct passage with teeth and frontal o-ring

VLA 04 DN 25 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
25
Direct passage and frontal o-ring

External Diameter 32

VLA 01 DN 32

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Self-locking direct passage with teeth

VLA 02 DN 32

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Direct passage

VLA 01 A DN 32

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Self-locking direct passage with teeth and rise on the piston for manual operations

VLA 02 A DN 32

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Direct passage with rise on the piston for manual operations

VLA 01 DN 32 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water
Diam. Features
32
Self-locking direct passage with teeth

VLA 02 DN 32 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water
Diam. Features
32
Direct passage

VLA 03 DN 32 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Self-locking direct passage with teeth and frontal o-ring

VLA 04 DN 32 HF

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
32
Direct passage with frontal o-ring

External Diameter 40

VLA 01 DN 40

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
40 Self-locking direct passage with teeth

VLA 02 DN 40

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
40
Direct passage

External Diameter 50

VLA 01 DN 50

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
50 Self-locking direct passage with teeth

VLA 02 DN 50

Cartridge-type check valve made of polyacetal, to control the flow rate impeding the reflux of contaminated water.
Diam. Features
50 Direct passage