1 / 7

806, 806YD 3”-10”

806, 806YD 3”-10”. Modification Overview. 806- (1979-1988) Cast Iron body- Threaded in seats- Internal check parts are epoxy coated iron. 806YD- (1988-present) Ductile iron body- Bolted in seats- Internal check parts are stainless steel.

Download Presentation

806, 806YD 3”-10”

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 806, 806YD3”-10”

  2. Modification Overview • 806- (1979-1988) Cast Iron body- Threaded in seats- Internal check parts are epoxy coated iron. • 806YD- (1988-present) Ductile iron body- Bolted in seats- Internal check parts are stainless steel. • The 806/806YD currently use the ¾” 805YB as the bypass assembly.

  3. Check Cover Removal • Cover is o-ring sealed. • 3” cover is spring loaded. * Hold cover firmly while removing bolts. • 4-10” Loosen bolts ½”. Spring load is now released from the cover and retained by the check assembly. * Verify spring load before removing all the bolts.

  4. Check Valve Removal • Center stem guided check assembly. • 3” spring, stem, and disc holder are free once cover is removed. • 4-10” disc & spring subassembly. • Slide subassembly straight out of seat and body.

  5. Check Seat Removal • 806YD series seats are o-ring sealed and bolted into the body. • Remove bolts and pull seat straight out of body. • Inspect the plastic guide bushing in center of seat. • ** (806) series seats are threaded into the body.

  6. Check Disc Replacement • Unthread the nut from the stem and remove disc retainer. ** For model (806) spring tension may have to be released to replace disc. Consult service center.

  7. Check Valve Reassembly Notes • Reassemble in reverse order. • Apply lubricant to o-rings. • 3” Models- inspect and clean the plastic guide in the check cover.

More Related