|
Very common thing to prevent the pump from collapsing the flex hose under heavy suction--like an almost-empty tank.
Many old cars had a spring inside their lower radiator hose for that same reason. My old '59 Chevrolet Biscayne had one because the lower hose was relatively soft and flexible.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dept.
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it. 
|
Linear Mode
