A PVC tee piece, with two plain cement joint sockets on either side and a female BSP thread on the branch.
The female threaded branch is strengthened by a stainless steel reinforcing ring. The ring gives additional strength to the fitting and can prevent splitting if over tightened. This is especially the case when connecting to male BSP metal threads. We recommend that threads should be put on hand tight with a further maximum 1/4 to 1/2 a turn with a strap or pump pliers thereafter.