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https://www.saigaogroup.com/product/ll-f-type-reverse-circulating-junk-basket.html

LLF type reverse circulating junk basket is designed to remove all types of small junks such as bit cones, cutters and hand tools from the bottom of the wellbore.

Working principle: Begin circulation of the junk basket to wash the hole. Stop circulation and drop the steel ball. When the steel ball is dropped into the valve seat, reverse fluid circulation is activated. The fluid travels outward and downward through the inner passage of the barrel and out through the vents in the lower end. The fluid is then deflected to the center of the tool and up through the return holes in the upper end of the barrel.

Technical Specification of LL-F Type Reverse Circulating Junk Basket:
Specifications - Reverse Circulating Junk Basket
ModelOD of barrel (mm)Max. fishing size (mm)OD of steel ball (mm)Connection (Box)Hole (mm)Product Code
LL-F86865123NC2692 〜98L11-86000
LL-F89895723NC2695 〜102L11-89000
LL-F92925723NC2695 〜102L11-920000
LL-F10110163.523NC26105〜114L11-101000
LL-F1141147828NC31117〜127L11-114000
LL-F12312390.528NC31130〜140L11-123000
LL-F1301309534NC38143〜152Lil-130200
LL-F14614611134NC38155〜165L11-146000
LL-F15915912134NC46168〜187L11-159100
LL-F17817813042NC50190〜210L11-178000
LL-F20020015442NC50212〜241L11-200000
LL-F20620615745NC50216〜241L11-206000
LL-F23223217957NC50244〜270L11-232000
LL-F2572571945765/8REG273〜295L11-257000
LL-F279279211576 5/8REG298〜317L11-279000
LL-F3013012195765/8REG320〜346L11-301000
LL-F3303302495765/8REG349〜406L11-330000
LL-F3813812795765/8REG406〜444L11-381000
LL-F508508406577 5/8REG559〜660L11-508000
LL-F5595594265775/8REG610〜711L11-559000

As a professional oil well equipment manufacturers, SAIGAO GROUP specializing in design, research and development, processing and manufacturing, sales and export of machinery equipment, with leading products comprising various kind of mud pumps, down-hole motors, any kinds of screen pipes, cementing tools as well as any kinds of wellhead equipment.