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OUR PRODUCTS

Technologically advanced solutions of the highest quality. Choose the right type of product for you, a wide range of irrigation couplings is available to you.

TYPE A

TYPE A

TYPE B

TYPE B

TYPE C

TYPE C

TYPE D

TYPE D

TYPE CI

TYPE CI

FITTINGS

FITTINGS

Dallai Ernesto
Type B

The Type B range originated in the 1970s-80s and is fully interchangeable with the Bauer coupling. Currently, it is made of iron, stainless steel, and aluminum and is normally supplied in the version with a safety system. It is used for a wide variety of applications such as irrigation, road construction, drainage, civil projects, bypass lines, in the food sector and in the chemical industry. The Type B coupling is widespread throughout the world.

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B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
Spherical fittings
Tubes Decharge Galvanizes
Foot valve
Sewage Spreader Fittings
Alluminium
Inox
Polycrimp
Procedure for assembling Type B spherical
couplings from diameter 50 to diameter 194
Position the male coupling against the gasket housed inside the female coupling.
Position the short hook in the outer seat of the female.
While holding the short hook in position in the outer seat of the female, open the handle so that the long hook is positioned in the outer seat of the female coupling.
Finally, once it is ensured that the male coupling is sufficiently aligned and there is no risk of damaging the gasket, close the handle to tighten the complete coupling.
Procedure for assembling Type B spherical
couplings from diameter 250 to diameter 450
Position the male coupling against the gasket housed inside the female coupling.
Position the short hook in the outer seat of the female.
While holding the short hook in position in the outer seat of the female, open the handle so that the long hook is positioned in the outer seat of the female coupling.
Finally, once it is ensured that the male coupling is sufficiently aligned and there is no risk of damaging the gasket, close the handle to tighten the complete coupling.

Technical advice

For total safety against accidental opening, insert the cotter pin into the appropriate holes if present in the handle and long hook.

For new couplings, in order to close them more easily, it is advisable (especially for larger sizes) to lightly lubricate the gasket with a suitable lubricant.

Art.2301A
The Type B coupling is made using the gravity die casting technique in a shell. The internal cavity is obtained by positioning a sand core inside the mold, obtained using the shell molding technique. The surface of the sand core therefore gives the internal surface of the Type B coupling its characteristic peeled appearance. This appearance, being only superficial, does not constitute a loss in mechanical strength of the joint or pressure tightness. The aluminum alloy used is primary (44100) and guarantees excellent levels of weldability and good mechanical strength values. The Aluminium Couplings are in Alloy EN AB 44100 – Al Si 12 (b).

Polycrimp couplings have the plastic part in PE100;

The Aluminium Couplings are in Alloy EN AB 44100 – Al Si 12 (b);

Materials

Steel couplings are mainly produced in S235JR UNI EN ISO 10025-2005 (EX Fe360B UNI EN ISO 10025-1995).

Stainless steel couplings are made of X5CrNi18-10 UNI EN 10088 (AISI304).

The Aluminium Couplings are in Alloy EN AB 44100 – Al Si 12 (b)

Products, where specified, are supplied with Hot Dip Galvanizing coating according to UNI EN ISO 1461 standards.