4.50” to 2.75” Close Coupler

Priced on Request
Built to Order
KPI Part 53-610710
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Reduces 4.50"CF to 2.75"CF
Alternating clear and tapped holes on both flanges
Incorporates one pair of Grabber Grooves per sealing surface

Large ID bores for low pumping conductance

316L stainless steel construction

Length: 1.68”
Weight: 1.80 lbs. (0.82 kg)


Bolt Types:

  • 12-point-head 1/4-28 x ½ silver plated bolts on 2.75” flange
  • 12-point-head 5/16-24 x 3/4 silver plated bolts on 4.50” flange