Plumbing connections for washing machines and dishwashers - Siroflex

Plumbing connections

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Washing machine and dishwasher plumbing connections

A range of articles with which Siroflex was born in 1963. Although many of these products have a high technical content (aimed at the professional plumbing and heating market), they still have the distinctive character of ease of installation. This feature, combined with the quality of design and materials, justifies the trust they still gain from the specific market segment.

Made in Italy

Design, production and packaging are 100% "Made in Italy" and each of our articles displays the Siroflex brand.

Historical experience

A range of solutions designed and implemented since the 1960s with and for the emerging Italian major appliance industry.

The beginning of a long history

The skills gained in those years and in that sector were the basis for the subsequent development of all the other items for the house and garden.
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Rubber tap adaptor

Symbol of Siroflex’s origin:
Article Number 1 patented by the company in 1963
For taps without thread.
Universal adaptor ideal for washing machines, garden, garage, industry:

  •   suitable for any tap outline
    •   provided with a reducer for all tap diameters between 25 and 8 mm.
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Quick connectors for washing machines and dishwashers

Born from the historical experience gained in the field of plumbing connection of domestic appliances, they guarantee maximum safety of the watertight seal.

With valve

  •   easy opening of the valve even with high pressures
    •   insertion of the male coupling without moving the ring of the quick connector body
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Quick connectors for washing machines and dishwashers

Without valve


  •   maximum safety of the watertight seal
    •   insertion of the male coupling without moving the ring of the quick connector body
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Kit for washing machine connection to bath mixer tap

Without valve


  •   maximum safety of the watertight seal
    •   insertion of the male coupling without moving the ring of the quick connector body
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Male couplings for quick connectors

with different threads for different applications:

  •   with valve 3/4" Male
  •   without valve 1/2" Male
  •   without valve 22x1M Male
  •   without valve 22x1M Female
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Fast flow drain kits

A simple and rational connection from a washing machine or a dishwasher outlet hose to a plastic or brass sink drainage pipe. For the drainage pipe drilling it is essential to use the appropriate drilling tool.

The drain saddle is equipped with a non-return valve that prevents the dirty water from returning into the washing machine or dishwasher. It also removes bad smells, working as a trap.

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Non-return valve

It allows a 20 mm diameter water flow, with the possibility to inspect it and clean it periodically.

The upper part of the body has a rotating ring nut that you can unscrew independently of the hose connector, whereas the internal valve is free and removable.

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Multidiameter fast flow drain kit with 90° elbow

This model is particularly suitable for vertical pipes. In this case it is also advisable to insert the anti-syphon unit before the non-return valve.


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Multidiameter fast flow drain kit with double connection

Made to allow the simultaneous connection of the washing machine and dishwasher on the same pipe, it is equipped with two 90° elbows and two non-return valves.


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Anti-syphon unit


A polypropylene air intake which prevents any risk that the washing machine or dishwasher continuously drains due to the vacuum effect caused by the drainage pipe.

This valve must be inserted between the drain saddle and the non-return valve.

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Anti-syphon unit with hose connectors

It is equipped with two universal hose connectors. Ready to be installed in any point of the outlet hose.


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Anti-syphon unit with non-return valve and hose connectors

In addition to avoiding vacuum by the main drain pipe, it prevents dirty water from returning into the washing machine or dishwasher;

This is the device which guarantees a maximum security.


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    Servicing your house and garden since 1963