This is a reducing adapter for extraction systems and is an FNPT x Tri-Clamp connection made out of 304 stainless steel. Note: the FNPT connection requires thread sealant like PTFE Tape.
Specifications:
Material: 304 Stainless Steel
Connection Type 1: 1.5" Tri-Clamp
Connection Type 2: 1-1/2"-(11-1/2) FNPT