Redesigned in 1980 with external "O" bead seal * easy service, & named THE PUMGUARD range.
Takes only 0.1 Bar, 1.5 psi to deflect the FlexTube.
Will dampen to within 0.2 bar 3 psi peak to peak.
You have 100% of the size performance you specify, not a tenth of 1%.
Beware of come lately "copies!" of hose dampeners .
BEFORE YOU PAY 10x MORE BY GOING TO "WAVEGUARD" BLADDERLESS dampeners , TRY OUR .