1" to 3/4" male reducing nipple with 3/4" BSP female clunk click hose fitting.
This combination of fittings is used to connect a hose to your resin vessel. It will also be suitable to connect a hose to any system with 1" connections.
These fittings are designed to make installation easy; simply screw the parts into the female threads on your unit and make simple connections to your hose pipe.