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LFF118-4 Watts

Non-Surge Check Valve for 6 & larger

Series LFF118-4, LFF1118-4 Non-Surge Check Valve is designed to control pipeline surges caused by flow reversal by slowly opening and closing at separate adjustable rates.


  • For 6″ and larger
  • Controls pipeline surges caused by flow reversal
  • Body and cover are constructed of strong and durable ductile iron (ASTM A536)
  • Simplified and efficient design is easy and economical to maintain

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific LFF118-4

Approval Information

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