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765 ½”- 2” - PowerPoint PPT Presentation


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765 ½”- 2”. Modification Overview. Production of the 765 began in 1975 and is current. Canopy Removal. The canopy is secured to the bonnet with a lock nut. Bonnet Removal. ½”-11/4”: The bonnet is threaded into the body and sealed by an o-ring. No spring load.

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Presentation Transcript
modification overview
Modification Overview
  • Production of the 765 began in 1975 and is current.
canopy removal
Canopy Removal
  • The canopy is secured to the bonnet with a lock nut.
bonnet removal
Bonnet Removal
  • ½”-11/4”: The bonnet is threaded into the body and sealed by an o-ring.
  • No spring load.
  • 11/2”-2”: The bonnet is bolted to the body and sealed by an o-ring.
  • There is a slight spring load on the bonnet.
float removal and service
Float Removal and Service
  • The float is free once the bonnet has been removed.
  • Replace the rubber seal by pulling it from the groove on the float.
check valve removal 11 4
Check Valve Removal ½”-11/4”
  • The check valve is spring loaded.
  • Remove the spring retainer by pressing down and rotating to clear tabs on the body.
  • Remove spring and poppet.
check valve removal 11 2 2
Check Valve Removal 11/2”-2”
  • The check valve is free once the bonnet is removed.
  • Remove the retainer, spring and poppet.
check disc replacement
Check Disc Replacement
  • The check disc is free once the retaining screw and guide are removed.
check seat replacement
Check Seat Replacement
  • The check seat is part of the body.
  • If the seat is damaged the assembly must be replaced.
reassembly notes
Reassembly Notes
  • Reassemble in reverse order.
  • Place large end of spring down toward the check poppet.
  • Make sure bonnet guide is inserted into center of float.