A.lubricating oil
B.lubricating oil systems
C.strainers
D.cartridges
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A.installations
B.basket strainers
C.a cylindrical container
D.a metal or wire basket
A.dampers
B.filters
C.stopper circuits
D.separators
A.check valve
B.non-return valve
C.steam trap
D.quick closing trap
A.stop valves
B.non-return valves
C.quick closing valves
D.relief valves
A.a pressure reducing valve
B.a pilot valve
C.an operating piston
D.downstream pressure
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