1.
First up is the Perforated 316 Stainless-Steel hose clamp. As respected as the original design may be, it isn’t without its flaws. Primary among these is the fact many hose clamps rely on a series of perforations. that are cut into the band, to form the screw threads. these perforations eliminate a significant portion of the bands cross section, weakening it and allowing it to elongate when tensioned. the elongation leads to micro-cracking, which in turn provides a toe hold for crevasse corrosion, a form of metal decay that is peculiar to stainless steel alloy. when hose clamp’s part they nearly always do so along these perforations, either as a result of overstress or corrosion or a combination of both. Additionally, the typical band itself is comparatively thin, which makes it relatively easy to strip the thread if the screw is over tightened.
2.
Constant Torque Hose Clamps:
My Favorite of all the hose clamps. Best bang for the buck, virtually all rubber hose compresses (cold flow) after installation of clamping device, resulting in an almost immediate torque loss that can exceed 80% of installation torque. Similarly, virtually all metal connections expand as a system heats up, and then contracts as the system cools. Conventional worm gear, T-bolt, and other clamps are passive, in that expansion or contraction of components cannot be compensated for without re-tightening or loosening the clamps.
Constant torque hose clamp, is an “active” clamping mechanism, which monitors and then compensates for the changes by actually changing diameter through a unique worm gear Belleville assembly.
3. T-Bolt stainless steel hose clamp.. can exert quite a bit of pressure but it seems to pinpoint the pressure to where the bolt is not giving an even pressure around the circumference.. the spring loaded key bolts affords more constant pressure
3. The king of hose clamps is the double bolted stainless steel hose clamp and is also the most expensive..Very sturdy hose clamp, Double Bolt Hose Clamps can be tightened at the same time from both ends, providing stronger tightening force. Solid metal rollers complement the strength of the bands. Marine Hose Clamp Up-grade Cummins Marine Services – Mobile marine mechanic (sbmarinemechanic.com) Marine Hose Clamps | West Marine PYI 316 Stainless Steel Hose Clamps | West Marine
