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Pressure relief ball
#41
While there take look at the upper surface of the pump cover plate (which is visible in the above photo, lower side towards us).

These are sometimes badly worn, if so you can lap it on some lightly oiled emery on a FLAT surface (e.g. surface plate) until clean and bright.
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Messages In This Thread
Pressure relief ball - by Steve kay - 03-04-2023, 06:20 PM
RE: Pressure relief ball - by Ruairidh Dunford - 03-04-2023, 06:38 PM
RE: Pressure relief ball - by Nick Lettington - 03-04-2023, 08:34 PM
RE: Pressure relief ball - by Steve kay - 03-04-2023, 08:58 PM
RE: Pressure relief ball - by squeak - 03-04-2023, 11:25 PM
RE: Pressure relief ball - by David Witton - 04-04-2023, 03:47 PM
RE: Pressure relief ball - by Steve kay - 04-04-2023, 05:39 PM
RE: Pressure relief ball - by Nick Lettington - 05-04-2023, 08:37 PM
RE: Pressure relief ball - by David Stepney - 05-04-2023, 10:38 PM
RE: Pressure relief ball - by Nick Lettington - 05-04-2023, 11:38 PM
RE: Pressure relief ball - by Steve kay - 06-04-2023, 07:07 AM
RE: Pressure relief ball - by Chris KC - 06-04-2023, 08:48 AM
RE: Pressure relief ball - by Robert Leigh - 06-04-2023, 09:12 AM
RE: Pressure relief ball - by Chris KC - 06-04-2023, 09:24 AM
RE: Pressure relief ball - by Nick Lettington - 06-04-2023, 10:22 AM
RE: Pressure relief ball - by Chris Garner - 06-04-2023, 11:56 AM
RE: Pressure relief ball - by Charles P - 06-04-2023, 12:01 PM
RE: Pressure relief ball - by Chris KC - 06-04-2023, 12:29 PM
RE: Pressure relief ball - by jpsmit - 06-04-2023, 12:41 PM
RE: Pressure relief ball - by Alan - 06-04-2023, 01:27 PM
RE: Pressure relief ball - by Nick Lettington - 06-04-2023, 05:34 PM
RE: Pressure relief ball - by David Stepney - 06-04-2023, 05:54 PM
RE: Pressure relief ball - by Ruairidh Dunford - 07-04-2023, 08:51 AM
RE: Pressure relief ball - by Steve Jones - 07-04-2023, 11:24 AM
RE: Pressure relief ball - by Reckless Rat - 07-04-2023, 11:56 AM
RE: Pressure relief ball - by Steve kay - 07-04-2023, 03:45 PM
RE: Pressure relief ball - by Ivor Hawkins - 07-04-2023, 04:12 PM
RE: Pressure relief ball - by Steve kay - 14-04-2023, 08:27 PM
RE: Pressure relief ball - by Ruairidh Dunford - 14-04-2023, 08:51 PM
RE: Pressure relief ball - by Ivor Hawkins - 14-04-2023, 08:52 PM
RE: Pressure relief ball - by Ruairidh Dunford - 14-04-2023, 08:53 PM
RE: Pressure relief ball - by Steve kay - 14-04-2023, 09:25 PM
RE: Pressure relief ball - by Ruairidh Dunford - 14-04-2023, 09:31 PM
RE: Pressure relief ball - by Chris Garner - 14-04-2023, 09:56 PM
RE: Pressure relief ball - by Ruairidh Dunford - 14-04-2023, 10:03 PM
RE: Pressure relief ball - by Nick Lettington - 14-04-2023, 10:51 PM
RE: Pressure relief ball - by Tony Press - 15-04-2023, 03:59 AM
RE: Pressure relief ball - by Steve kay - 15-04-2023, 07:27 AM
RE: Pressure relief ball - by Charles P - 15-04-2023, 07:54 AM
RE: Pressure relief ball - by Reckless Rat - 15-04-2023, 08:26 AM
RE: Pressure relief ball - by Chris KC - 15-04-2023, 09:15 AM
RE: Pressure relief ball - by Steve kay - 16-04-2023, 09:37 PM
RE: Pressure relief ball - by Chris KC - 17-04-2023, 08:22 AM
RE: Pressure relief ball - by Chris KC - 17-04-2023, 01:39 PM
RE: Pressure relief ball - by Steve kay - 17-04-2023, 09:05 PM
RE: Pressure relief ball - by Alan - 17-04-2023, 09:48 PM
RE: Pressure relief ball - by Ian Williams - 17-04-2023, 09:49 PM
RE: Pressure relief ball - by Howard Wright - 18-04-2023, 08:30 AM
RE: Pressure relief ball - by Chris KC - 18-04-2023, 08:52 AM
RE: Pressure relief ball - by Steve kay - 18-04-2023, 01:13 PM
RE: Pressure relief ball - by Jeff Taylor - 18-04-2023, 01:35 PM
RE: Pressure relief ball - by Steve Jones - 18-04-2023, 01:36 PM
RE: Pressure relief ball - by Reckless Rat - 18-04-2023, 02:22 PM
RE: Pressure relief ball - by Chris KC - 18-04-2023, 02:27 PM
RE: Pressure relief ball - by Ruairidh Dunford - 18-04-2023, 02:43 PM
RE: Pressure relief ball - by Steve kay - 18-04-2023, 08:02 PM
RE: Pressure relief ball - by Steve kay - 15-05-2023, 07:11 PM
RE: Pressure relief ball - by Tony Press - 15-05-2023, 11:29 PM
RE: Pressure relief ball - by Steve kay - 16-05-2023, 07:31 AM
RE: Pressure relief ball - by Reckless Rat - 16-05-2023, 08:57 AM
RE: Pressure relief ball - by Chris KC - 16-05-2023, 09:31 AM
RE: Pressure relief ball - by Stuart Giles - 16-05-2023, 02:05 PM
RE: Pressure relief ball - by Steve kay - 16-05-2023, 04:49 PM
RE: Pressure relief ball - by Timbo - 17-05-2023, 04:33 AM
RE: Pressure relief ball - by Steve kay - 17-05-2023, 07:17 AM
RE: Pressure relief ball - by Steve kay - 06-07-2023, 06:14 PM

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