SRM's Stainless Steel Norton Pressure Release Valves
SRM's Stainless steel CNC precision engineered
pressure release valve ,each one hand assembled
and checked on a pressure jig to ensure correct
seal and blow off pressure; the main problem with
old PRV`s is the poor thread diameter , some
original Norton valves were found to be 0.025"
(0.63mm) undersize on the thread diameter,this allowed oil to bypass the valve to the
blow off via the threads,this resulted in low oil pressure.
Our valve helps eliminate this problem with the high accuracy of manufacture.
Part number SRM-06.6195A , fits NORTON TWINS from 1959 to 1976.
Price £31.19 pounds plus Vat in EEC. (Products Catalogue pdf)
Please check that your timing cover is the correct type to use this large pressure
valve, as old bikes can sometimes have wrong parts fitted through their lifetime.