The live loaded clamp nut maintains a constant tightening force on clamped unions. This is helpful in keeping the seal of the clamped union, especially one with teflon gaskets.
The “live loaded” nut fits on standard clamps and can be retrofitted on existing clamps. The assembly consists of a two-piece outer housing with springs contained inside, once the nut is tightened to 50 inch/pounds on the clamp the springs are compressed. Steel & O’Brien part number is KCH00003.