M-11 Harnesses

M-11 Harnesses

Joint Harnesses specified per AWWA M-11 are designed to restrain flexible couplings on steel pipelines. The harnesses will be supplied bare steel to allow for field welding into place. Sizes available 14” – 96”. Larger sizes available on request.


Restraint Rings: Carbon Steel per ASTM A193 grade B7.
Tie Rods: ASTM A193 grade B7.
Stainless steel available on request. (Twice as many rods required)
Coating: Bare, shop blasted.
Pressure: Design pressures from 50 PSI – 250 PSI.
Detailed in the AWWA M-11 manual



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