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WATTS LF601S - 1" - Lead Free Brass Silent Check Valve - (0555183) - 1 LF601S


Lead Free: YES

1 In Lead Free Brass Silent Check Valve, Viton Disc, Solder


This 1 inch lead free Maxi-Flo check valve is used in general industrial and plumbing applications to prevent the effects of water hammer in the piping system. It provides a silent operation with low pressure drop and can be installed horizontally or vertically. This valve consists of a lead free brass body, lead free brass check and adapter, Viton® disc, and soldered end connections. The maximum pressure rating is 400 psi (27.6 bar), WOG non-shock at 100 degrees F (38 degrees C).



  • Integral lead free brass seat
  • Lead free brass body
  • Viton (R) disc
  • Silent operation


Body Material Brass
Body Pattern Straight
Brand Name Watts
Buy American Act NO
Disc Material Viton
Disc Type Conical
EAN 098268432930
Inlet Connection Size 1 IN
Inlet Connection Size-Metric 25 MM
Inlet Connection Type Socket
Inlet Thread Type NPT
Lead Free YES
Maximum Operating Temperature-Celsius 38.00
Maximum Operating Temperature-Fahrenheit 100
Maximum Working Pressure-PSI 400
Minimum Temperature - Celsius -29.00
Minimum Temperature-Fahrenheit -20
Outlet Connection Size 1 IN
Outlet Connection Type Socket
Outlet Thread Type NPT
Part Number 0555183
Pressure-Temperature Rating 400 PSI at 100 degree F
Pressure-Temperature Rating-BAR 27.6 BAR at 38 degree C
Seat Material Lead Free Brass
Series LF601
WOG Rating 400 PSI



WATTS LF601S - 1" - Lead Free Brass Silent Check Valve - (0555183)

SKU: 555183