The Valterra coupler bayonet fitting is self threading and does not require hose clamps. 
Designed to suit 3" hoses.

Attachment Instructions:

1. Lubricate hose with furniture spray wax.
2. Stretch hose end to expand coils and then twist on in a clockwise direction.
3. Tightly press four to six collapsed wire coils against centre rib section to ensure leak-proof seal.
4. Works with right or left handed coil hose.