Sight Glass Level Indicator

[RatAle]

If your looking to add the finishing touches to your sight glass, like the V1 version.

You need a plastic ball !

I looked at these about 18 months ago, so the price may have changed and more companies may do them now.

I got samples from the The Precision Plastic Ball Company Limited and Dejay Distribution

The ones I asked for were:-

5.5mm dia, red Polyproylene
6mm dia, green Polyproylene
6.5mm dia, red Polyproylene
1/4" dia, green hollow HDPE from TPPBCL

and 3/16" dia, green Polyproylene from Dejay

Unfortunatly there is a minimum order, about £30, but they cost pennies. Maybe Paul at Barley bottom might get some in

They float and are food grade, just pick one smaller than your internal diameter (ID) of your tube.
If you already have a sight glass, just pop it the top :shock:

My overflow is lower than top of sight glass, so the ball will not come out inadvertantly.
If I need to clean my balls :shock: :shock: I just block the overflow and fill up

Some not so good pics:-

 

[Vossy1]

What stops it coming out of the bottom of the sight tube when the vessels empty :hmm:
I don't fancy losing my balls :lol:

 

[RatAle]

Good point V1

I can just my balls floating in a pint :)

Use a smaller hole and fitting at the bottom and an adapter to increase size :lol: for the tube.
You could also add a small ball valve at the bottom in case the sight glass breaks and you don't want to lose your contents.