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Water Safety & Flow Control

LF601, LF601S

Lead Free* Cast Copper Silicon Alloy Maxi-Flo Check Valves

Lead Free* Models Available


1/4 to 1 in. (8 to 25mm)


Series LF601, LF601S Lead Free* cast copper silicon alloy Maxi-Flo Check Valves are used to prevent the effects of water hammer in the piping system. They feature a Lead Free* copper silicon alloy body, Viton disc and integral copper silicon alloy seat. Series LF601, LF601S silent check valves have a low pressure drop and can be installed in a horizontal or vertical position. Model LF601 is available in sizes 1/4 to 1/2 in. (8 to 15mm) with threaded connections. Model LF601S is available in sizes 1/2 to 1 in. (15 to 25mm) with solder connections. Maximum Pressure: 400psi (27.6 bar) WOG (non-shock) @ 100°F (38°C).

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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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