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Technical Support

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Determination of the diptube length

For the valve on an aerosol container to perform efficiently (i.e. for complete evacuation) the length of diptube must be correctly determined to suit the aerosol can or bottle and the particular product/propellent mixture.

Any length can be supplied.

N.B. In UK standard diptube measurement is from  base of cup. (F.B.O.C.)

When you order, please inform us the total height of your can, so we can give a suitable length of dip tube for you.

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Filling around the stem

The filling head must be adjusted so that the filling head gasket will be pushed correctly on the valve dome to guarantee a perfect gassing.

Button-on-Filling

The filling adapter must be adjusted so that it pushes the sprayhead against the valve dome to guarantee a perfect gassing through the filling ports

 

Selection of the Correct Inner Gasket

The gasket is an important factor affecting the long term sevice ability of the valve. To effect proper valve sealing, care must be taken to ensure that no shrinkage of the inner gasket occurs. The predominant solvent in the active ingredient usually determines the rubber grade which shoud be used. The swelling tables below show at a glance how the gasket behave in various solvents after 48hrs exposure at 20'C.

 

normal type of material is Buna, Butyl, and Neo-preprene.  The 3 kinds of rubber can cover more than 90% aerosol formula use.
When you choose a new valve, the key study is check the spray pattern and the inner gasket use. But the inner gasket checking will spend more time.
A aerosol product must has a good formula, But you must study and let the formula is suitable the valve also. So formula is impossible used in aerosol product.
If you need us commend a suitable valve for you, We need to know the detail of your product as total heigth of can, spray pattern, main solvent, propellant and how to use.

 

Optimal Clinching

Valve type Can          Clinch diameter Clinch height
Aluminium cup Aluminium 26.9-27.1 5.15-5.25
Tinplate cup Aluminium 27.0-27.2 5.05-5.15
Aluminium cup Tinplate 27.0-27.2 5.00-5.10
Tinplate cup Tinplate 27.1-27.3 4.90-5.00


Valve's components name:




Valve's components standard colour:
Actuator:
Body: white, black
Insert:
Spray nozzle 0.25 0.3 0.4 0.5 0.6 0.7
Colour white nature yellow blue   red    black

Fan spray insert:
Spray nozzle 0.5 0.6-1s 0.6-2s 0.6-3s
Colour black blue yellow red

Stem:
Hole 1x0.5 2x0.5  2x0.7  3x0.7 4x0.6
Colour red orange  white  natural natural

Metering spray dose:
Spray dose Housing 40mcl 70mcl 100mcl
Colour yellow nature red