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Main PageEngineering plumbing WattsCatalogueAntipollution devicesBackflow PreventersFlanged backflow preventer WST909 *Upon request

Flanged backflow preventer WST909 *Upon request

Flanged backflow preventer, with regulated reduced pressure zone, to UNI 9157 standards.
WATTS patented high protection series “AIR IN - WATER OUT”.
Cast iron body lined on inside and outside with 2 coats of epoxy resin.
Stainless steel discharge valve guides and springs. Max. operating temperature: 60°C.
Max. operating pressure: 10 bar. Flanged fittings: NP 10.
Complete with inspection system and stainless steel connection to discharge pipe for ND 65 and 80.
With drain funnel from ND 100 to ND 250.

DEDICATED TO EXPORT MARKETS AND/OR SPECIAL APPLICATIONS REQUIRING US APPROVAL.
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Type Part no. WII Part no. WID
WST 909 1505006
65
WST 909 1505008
80
WST 909 1505010 10002329 100
WST 909 1505015 10002330 150
WST 909 1505020 10002331 200
WST 909 1505025 10002332 250