Circulator Coupler 1/2" x 1/2" "Yoke Style" - Replaces Bell & Gossett 118473, PDZ-12291, Armstrong 810120-003, Hydrolevel RM-798, Sid Harvey 156-2, 156-2C,
Commonly found on Bell & Gossett 60 series pumps, Armstrong H51, H52 Series circulators. Comes brand new in box.
