Tee for shower drain pump

[Rowglide]

Soo….
In the less than ideal world, I am finally installing a shower sump and pump. I don’t want any more through hulls either above or below the waterline.
So I intend to use a T in my head sink drain with a vented loop up high. There doesn’t seem to be any pre-made solution to this.
I assembled a tee using all bronze pieces… t is massive! Is there a 1-1/4 X 1-1/4 X 3/4” barbed T fitting out there anywhere?
This would be a great spot for Marelon but Forespar doesn’t make any T’s.
Any suggestions? Weld one up with 316 pipe ?

[Tupaia]

Why is the sink drain so large 1 1/4" is head discharge size. PVC solvent weld fittings come in 40x20x40 reducing Tees (irrigation pipe). The other problem you may experience is shower water backing up in the sink.

[Fortytwo]

https://www.grainger.com/product/22F...E&gclsrc=aw.ds

[Rowglide]

[QUOTE=Tupaia;3778435]Why is the sink drain so large 1 1/4" is head discharge size. PVC solvent weld fittings come in 40x20x40 reducing Tees (irrigation pipe). The other problem you may experience is shower water backing up in the sink.[/

I agree it is large, but that was factory layout. Not too concerned about shower back up I sink, sink has always had the ability to drain completely in seconds.

[Rowglide]

Originally Posted by Fortytwo

https://www.grainger.com/product/22F...E&gclsrc=aw.ds

Thanks! I got so wrapped up in “marine” that I never even looked there…. That looks ideal.