Time to check

[david_bagshaw]

I bought one of these vacuum guages.
I removed the T handle and replaced it with the guage. Whilst it fits it isn't right. It doesn't form a good seal. The T handle has a seal. The guage doesn't. If you take the seal off the T handle and put it on the guage is doesn't work as there is no flat part on the guage for the seal to push against. Quite disappointing and lacking any design consideration. As David has suggested you need the 'special' T handle to mount it on but why? Where do you get one of these special handles?
Had it been designed so that it formed a seal it would be ok. As it is I wouldn't recommend one.

bought it from Racor, but a long time ago, 91 or 92.

no reason not to drill your existing handle with a 3 or 4 mm hole, then a larger one approprite to tap a thread for an elbow and then fit the vacume gauge.

 

[jfm]

I hope there are some prodct planners looking in here

Oops I have to eat my words and apologise, at least to Fairline. They have fitted nice restriction gauges to both sets of filters on Sq78, with a user-settable max needle, plus an automatic max vacuum needle (which follows the actual vacuum needle mechanically) so you can read how things are doing with the engines switched off. Nice job, and until now I hadn't even noticed!

 

[Talulah]

bought it from Racor, but a long time ago, 91 or 92.

no reason not to drill your existing handle with a 3 or 4 mm hole, then a larger one approprite to tap a thread for an elbow and then fit the vacume gauge.

Update:
To replace the 'T' handle you need to buy the kit, not just the gauge.
Here is a link to the kit. It has the extra piece in between with the seal.
http://www.asap-supplies.com/search/racor+vacuum/vacuum-gauge-kit-for-turbine-single