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Backflow Prevention


Ductile Iron, Class 250 Flanged End, Wye-Pattern Strainers

Lead Free* Models Available


2 to 12 in. (50 to 305mm)


Series 77F-DI-250 Ductile Iron, Flanged, Wye-Pattern Strainers feature a wye-pattern, ductile iron body with Class 250 flanged connections, stainless steel screen, bolted and tapped iron retainer cap with graphite gasket, and iron blow-down plug. Maximum Pressure (non-shock): 500psi (34.5 bar) @ 150°F (66°C) WOG, 250psi (17.2 bar) @ 406°F (208°C) WSP.

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Disclaimer: Watts product dimensions in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

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*The wetted surface of this product contacted by consumable water contains less than 0.25% of lead by weight.

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