· Technical review: 11 October 2026
A mobile vacuum unit looks attractive when several tools share a workshop. A static installation can make more sense when production stays in one place. With MIL’S COMPOSITVAC, the useful comparison is how vacuum will reach the tools and how the system will be used during a busy shift.
Draw the workshop before choosing the package
Mark the tools, their vacuum connections and the route between them. Record which jobs can run together and which require an uninterrupted vacuum supply. A mobile unit may shorten the connection for one job, but moving it is not practical while another tool still depends on it.
A static unit needs its distribution arrangement planned. Include branch valves, hose lengths and measurement points. The pressure at the pump is not necessarily the pressure at the furthest tool, particularly while gas is flowing.
Understand what the receiver contributes
A receiver adds volume to the system and can help manage changes in demand with appropriate controls. It does not create pumping capacity. If several tools leak more air than the pump can remove at the required pressure, a larger receiver will not solve that sustained shortfall.
State the pressure you need to maintain and the acceptable variation during each process stage. Give the supplier the tool volumes and any leak-test information you already collect.
Keep resin protection explicit
COMPOSITVAC packages are offered for vacuum infusion and light RTM. The EVISA configurations shown in our mobile E65.R and static E65.R listings use oil-lubricated rotary vane technology.
Specify resin catchpots, liquid protection and any additional filtration required between the tool and pump. Confirm their capacity, connections and access for inspection. The vacuum pump should not be used as a way to collect excess resin.
Confirm the package, not just the family name
COMPOSITVAC has appeared in different catalogue configurations over time. A historical suffix does not by itself establish the receiver, controls or motor supplied on a new order. Ask for the current package reference, drawing and itemised scope.
Include the number of outlets, control method, electrical supply and any need for a remote indication or alarm. Where loss of vacuum could spoil a long process, discuss what should happen during a power interruption or equipment fault and whether additional provision is needed.
Send a short process brief
A useful enquiry can be one page: workshop sketch, tool sizes, simultaneous demand, required pressure and operating hours. Add the proposed location or movement route. That gives Girovac enough context to discuss a mobile or static arrangement without pretending the full design is already settled.
Discuss your equipment requirement
Our composite processing guide connects the system choice with gauges, protection and the process at the tool. For a quotation, send your requirements to Girovac or call 01692 660 117.
Technical reference: MIL’S industrial catalogue, February 2022 (PDF); MIL’S COMPOSITVAC dedicated range brochure (PDF). Confirm the exact model and supplied configuration when ordering.