REPLACEMENT ORIFICE FOR X-JET NOZZLEX Jet Nozzles contain an internal orifice which is gauged (sized) to match your GPM PSI. Many times, we get calls from customers ordering a replacement orifice due to loss or wear and tear that will occur over time from water pressure. We also receive calls requesting a different size internal orifice size to use with a different GPM PSI machine. Remove the internal spring and orifice from the nozzle and then replace with the new orifice. Remember to