This should be a easy installation once you have a replacement valve. Wilkins Model# BR4 comes to
mind. This residential pressure reducing valve has a max of 400 PSI and
comes factory preset at 50 PSI. Sizes from 1/2" up to 1" IPS, (Iron pipe
size) Check it out at
http://www.daveyusa.com/BR4.pdf Good luck and if you have any more questions just click on back. Regards Tom