15 replies to this topic

[Kt1966]

Does anyone have the answer on which way round this valve seat goes ?

 

I can see the argument for both but I'd really appreciate confirmation - I've marked them up.

 

I reckon it's purple which goes in first for what it's worth

 

Many thanks

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[imack]

One end must have a taper that matches the shuttle valve seat.

[Kt1966]

Thanks, yes that's my thinking - the "green" side has the taper so the purple must be pressed into the engine

[imack]

Just had a look at my spare block and it appears to be fitted the other way around - green end in first with shuttle seat mating with purple end.
Vizard book would also appear to suggest this but only shows a side view.

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[Kt1966]

That's bizarre... That doesn't make any sense does it. Interesting that he's using a ball in the illustration, I wonder if if it's different for ball/shuttle....
Decisions, decisions - thanks for looking though

[Spider]

Refer the Photo in post #12 below

Edited by Moke Spider, 07 May 2019 - 07:30 AM.
Provide clarity as I can't see which end is what colour !

[Kt1966]

Looking at Vizard and Moke's post then it looks like green should be out then.....Why can't they just be the same !!! (I'm using a shuttle and not a ball by the way)

 

Thanks to you both - much appreciated

Edited by Kt1966, 06 May 2019 - 12:01 PM.

[Spider]

Looking at Vizard and Moke's post then it looks like green should be out then.....Why can't they just be the same !!! (I'm using a shuttle and not a ball by the way)

 

Thanks to you both - much appreciated

 

I actually suspect the photo in Vizzard's book has the seat back to front.

[Kt1966]

Although just looking at it now the tapered (green) bit of the seat doesn't fit at all well with the shuttle - you'd say that the sharper ( purple) end would be the better fit ( which is what Vizard is showing)....

 

Why can't both ends be the same....?!

[Spider]

Now I look at your pics again, I can't tell which colour is on which end.

 

As per the diagrams and photo here;-

 

http://www.theminifo...huttle-vs-ball/

[mikal]

The purple end has a step inside so the thing can be extracted from the block so green end out?

[Spider]

This is the end that faces out

 

[Rorf]

This is the end that faces out

 

 

Agree now. Unfortunately I just put my PRV and spring back in and don't really want to undo it because of the nice new copper washer

 

But when it was open I put my little pinky finger in the hole and it definitely felt like the shaped orifice in the photo above

[DeadSquare]

May I suggest that someone puts a tap down one, inserts a bolt and pulls one out.

[Kt1966]

We seem to have a consensus...! I agree that the purple is definitely the end which faces outwards. It just has to be.
Thanks to everyone - its very reassuring