This manifold reducer nipple has 1" male pipe threads on one end and 3/4" male pipe threads on the other. No glue is required.
By Jeffrey on 9/6/2020
I used this to connect a Dura starter to a 3/4 inch schedule 80 FPTxFPT adapter in order to install an in line filter in the manifold system ahead of the valves. There was 100 psi of water pressure and the joint leaked. An application of Teflon tape stopped the leak.
WARNING: This product can expose you to chemicals including Carbon black and Titanium dioxide, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.