3/4" Female Blanking Cap: Fill and Test in Stages (video guide)

The 3/4" female blanking cap from MaxHeatUFH screws onto a 3/4" male thread to seal it. On a manifold it closes an outlet you are not using yet, so you can fill and test before every loop is connected.

Watch the full video and the quick version below, and download the data sheet and install manual for the exact specification.

Key facts

• Seals a 3/4" male thread
• Closes an unused manifold outlet
• Fill and test in stages
• Rubber sealing washer inside
• One on the flow bar and one on the return bar per unused loop

How to fit it

1. Make sure the outlet thread is clean
2. Screw the cap on by hand, then nip it up with a spanner
3. Fit one on the flow bar and one on the return bar for each unused loop
4. Check the caps for weeps during the pressure test

Buy it

The 3/4" Female Blanking Cap is available from MaxHeatUFH. Order by 12pm on a working day for next working day UK delivery. Trade customers see their trade price when logged in.

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