It's a valve, IMO .

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Note added at 37 mins (2015-02-10 14:56:24 GMT)
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see delta.fire.co.uk
and
systemplus.sklep.pl

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Note added at 10 hrs (2015-02-11 00:37:22 GMT)
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Porównaj

Rozdzielacz kulowy podwójny 110/75-75 (A/BB)

Rozdzielacz kulowy podwójny służy do rozdzielania strumienia wody z głównej części linii wężowej na dwie lub trzy linie.
Wyloty rozdzielacza są wyposażone w niezależne zawory kulowe służące do zamknięcia przepływu wody.

http://www.systemplus.sklep.pl/rozdzielacz-kulowy-podwojny-1...

i

Water Delivery – Dividing Breechings / Collecting Breechings / Controlled Breechings

As part of their water delivery range Delta Fire supply Dividing and Collecting Breechings in a number of different formats. Options are available in standard or controlled, light alloy or gunmetal and with either British or International fittings for individual compatibility of use. Water Delivery - Dividing & Collecting Breechings

The Dividing Breeching takes a single water supply and divides it into two, allowing the user to fit two hoselines to one water supply for enhanced water delivery and can be supplied with an on/off ball valve or with a screw-down valve creating a Controlled Dividing Breeching.

The Collecting Breechings work in completely the opposite direction to the Dividing Breechings and give the user the ability to have two water feed hoses supplying one outlet. As with the Dividing Breechings these can be supplied as ‘Standard’ or ‘Controlled’. All of Delta’s water delivery products can be adapted for use with any International fittings.

Delta Fire also supply WYE Breechings in both light alloy and gunmetal.

CLICK HERE for BALL VALVES

Dividing Breechings – Light Alloy – Water Transfer
WEA100000 2 ½” Instantaneous Dividing Breeching
WEA100500 2 ½” Instantaneous Controlled Dividing Breeching c/w Ball Valves
WEA100565 2 ½” Instantaneous Controlled Dividing Breeching c/w 2 ½” Ball Valves – Norfolk FB
WEA100600 2 ½” Instantaneous Controlled Dividing Breeching c/w Screw Down Valves
Collecting Breechings – Light Alloy – Water Transfer
WEA050000 2 ½” Instantaneous Collecting Breeching
WEA——– 2 ½” Instantaneous Controlled Collecting Breeching c/w Ball Valves


Dividing Breechings – Gunmetal – Water Transfer
WEG100000 2 ½” Instantaneous Dividing Breeching
WEG100500 2 ½” Instantaneous Controlled Dividing Breeching c/w Ball Valves
WEG100600 2 ½” Instantaneous Controlled Dividing Breeching c/w Gate Valves
Collecting Breechings – Gunmetal – Water Transfer
WEG050000 2 ½” Instantaneous Collecting Breeching
WEG——— 2 ½” Instantaneous Controlled Collecting Breeching c/w Ball Valve

http://www.deltafire.co.uk/products/water-delivery/dividing-...