1> Routine valve stem:Nylon
2> One-inch valve outer gasket:Rubber
3> One-inch routine valve mounting cup:tinplate/aluminium
4> Routine valve inner gasket: Rubber
5> Routine valve housing : Nylon
6> Routine valve spring: Stainless steel
7> Dip tube:Polythylene
fast filling with low pressure.Without VPH,for household product,personal care product,automobile and industrial aerosol product.
With VPH,especially for water-base aerosol product, able to get better spraying effect if with two-piece actuator.