Circulator Coupler *Heavy Duty - 1/2 "X 1/2 " - Spiralink and 21755U models

and 21755U models

The Williams JHW1234TOB is a 1-1/16" 12-Point SAE Offset Box End Tubular Handle Wrench designed for professional and heavy-duty applications

and straight-line cuts

It plays a vital role in the start-up and operation of burner boilers

integrated scale reads pipe diameter for fast jaw adjustments

Circulator Coupler *Heavy Duty - 1/2 "X 1/2 " - Spiralink and 21755U modelsProduct Detail Spiralink Circulator Coupling 10010HD, 1 2 "x 1 2 " A more durable 10010 with thicker gauge wires. For Bell & Gossett, Armstrong, and Taco circulators and In Line Pumps. The Spiralink is a permanent replacement for the failure prone OEM coupling. Replace the flimsy, 4 spring, OEM fly away' coupling with a SpiralinkTM today. Leave your customers feeling satisfied in knowing they won't be left in the cold this heating season! Spiralink's