Breaker pad

A breaker pad, comprising a breaker pad body having an orifice therethrough and through which a flowable material can flow in a flow direction, said body, viewed in a first direction which is substantially in-line with said flow direction, including a plurality of successively adjacent angular formations forming a boundary surrounding said orifice and which extend generally towards a central region of said orifice, each respective pair of adjacent ones of said angular formations having therebetween an angular recess portion of said orifice which extends generally away from said central region of said orifice.

A breaker pad comprising a breaker pad body having an orifice therethrough and through which a flowable material can flow in a flow direction, said body, viewed in a first direction which is substantially in-line with said flow direction, including a plurality of successively adjacent formations having respective surfaces defining a boundary surrounding said orifice, the respective surfaces of each of said formations generally converging toward a central region of said orifice to an apical region of the formation, each respective pair of adjacent ones of said formations having therebetween a recess portion of said orifice bounded by adjacent pairs of said surfaces generally converging away from said central region of said orifice to an apical region of the recess portion.