The assembled unit requires a Socket and Ball combination. Sockets will not connect to Sockets and Balls will not connect to Balls.
Socket side parts include the common centre nut.
The Knuckle Union is used to connect and disconnect pipework or valves quickly and easily from pumps and existing installations. This component has the added benefit of a 9 degree ‘Knuckle’ movement, which provides greater flexibility at installation and removes the necessity of the pipework having to line up exactly with your pump.
Product Sizes and Pressure Ratings
Code - Metric - Imperial
Knuckle Union Socket - Poly Pipe Tail
KUS20P - 20mm - 3/4"
KUS25P - 25mm - 1"
KUS32P - 32mm - 1 1/4"
Knuckle Union Socket - Male Thread
KUS20M - 20mm - 3/4"
KUS25M - 25mm - 1"
KUS32M - 32mm - 1 1/4"
Knuckle Union Ball- Poly Pipe Tail
KUB20P - 20mm - 3/4"
KUB25P - 25mm - 1"
KUB32P - 32mm - 1 1/4"
Knuckle Union Ball - Female Thread
KUB20F - 20mm - 3/4"
KUB25F - 25mm - 1"
KUB32F - 32mm - 1 1/4"
All the above components are rated for 10 Bar Pressure.
Features and Applications
Knuckle Unions are used to connect and disconnect pipe work or valves quickly and easily from pumps and existing installations.
Provide ultimate flexibility around pumps.
Offer a quick connect / disconnect solution around pumps or along the trunk of a pipe.
9º ‘Knuckle’ movement provides greater flexibility at installation time and removes the necessity of the pipe work having to line up exactly with your pump.
The pump can easily be removed or installed from the system for servicing by undoing the common nut.
The pump can be misaligned from the pipe work by a total of 9º
Multiple configurations enable this fitting to meet the needs of just about any situation.
The ability to connect to poly pipe applications directly from the pump or in-line.
Fits onto the extensive range of Hansen Easy Fit & True Fit Pipe Fittings.
Please look at the Poly Fittings pages for connection of the Poly Easy Fit pipe fittings side of the fittings.
Ensure that all pipework is adequately supported.
1. Line up the two ends of the Quick Connect Knuckle Union
2. Join the two parts together by winding the common centre nut on to the matching male thread.
3. Ensure that the common centre nut is firmly tightened. DO NOT OVER TIGHTEN.
4. The finished connection - the Poly Pipe is connected with the Quick Connect Knuckle Union.