10 cents... I was just quoting the 1950's book ... it was not my asking price
ok here is the status....
I found some fine stainless steel wire mesh called.... "Splatter screen"
2 $"... for approx. 1 square foot at the Dollar store !
let me try my hand at it first
I snip a small narrow piece and wrap it on the check valve body with fine stainless wire... found at the arts store MIchael's