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Backflow Prevention


Lead Free* Brass, Wye-Pattern Strainers with Tapped Retainer Cap

Lead Free* Models Available


3/8 to 3 in. (10 to 80mm)


Series LF777SI, LFS777SI Lead Free* Brass Wye-Pattern Strainers feature a wye-pattern, Lead Free* brass body stainless steel screen and solid tapped retainer cap with EPDM gasket. Model LF777SI comes with threaded connections and is available in sizes 3/8 to 3 in. (10 to 80mm). Model LFS777SI comes with solder connections and is available in sizes 1/2 to 2 in. (15 to 50mm). Model LF777SI - Maximum Pressure (non shock): 400psi (27.6 bar) @ 210°F (99°C) WOG, 125psi (8.6 bar) @ 353°F (178.3°C) WSP. Model LFS777SI - Maximum Pressure (non shock): 400psi (27.6 bar) @ 150°F (66°C) 15psi (103 kPa) @ 250°F (121°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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