Hello Moorthi,
I wonder how could you reach those loads without meeting NEMA requirments.
May be I am mistaken...NEMA reqts on 66" nozzle Limit 1 : 3Fr+Mr<=500Dc (500Dc=13667) Fr,Mr are lbs,ft-lbs. if I got those loads 500kg ( =5000N=1124 lbs) the system will be perfect.
How did you decrease the thrust force? ( by rods?)
Please advise , I am sure you got more experience than I do.
regards
Yani.