Doer

Doers or liquid cylinders
doers or liquid cylinders are a kind of transport cylinder that carry various liquids and are available in 175, 210, 500, and 1000 L capacities. The superiority of these cylinders upon fixed cylinders is in the simplicity of usage and direct installation of gas to liquid exchanger on the cylinder that eliminates the need for purchasing of accessories for liquid to gas transformation. Furthermore, they have many gas and liquid outputs and the customer can use the containment in liquid or gas form, based on their need.
Another advantage is in the economical aspect over gas cylinders of the same capacity, based on the volume and purity of the liquids that can be stored.
In common conditions, the output valve of Doers has the pressure adjustment capability from 0 to 25 bar.

Advantages:
1- Reduction in risks of loading and unloading of cylinders
2- No need for opening and closing different cylinder valves to the consumption center
3- No need to change the cylinder valve or hydrostatic test
4- All the liquid can be drained and converted to gas and consumed, while commonly some gas remains in the cylinder
5- No need for electricity
6- The higher capacity of Doer compared to cylinders reduces the open/ close time and eliminates interruptions in gas production
7- Lower space is occupied compared to gas cylinders, because each 175 L Doer reservoir equals 27 cylinders of oxygen with 40 L capacity and 135 bar pressure
8- Since oxygen/ nitrogen/ argon are charged in liquid form in these cylinders, they have higher purity than those stored in gas cylinders