Hi where can I find a regulator switch to put on my vacuum pump ,so when its up to the required pressure it switches off automaticly and switches on when required . 

As we are new to the composites industry, we made the mistake of leaving the valve opened for a short period whilst the vacuum pump was off after resin infusion which saw the pump oil being sucked out. We closed off the valve as soon as we saw this happening..

Just wondering if this would have done any damage to the pump? (it is brand new) And if its just a matter of topping it up with fresh oil?

Regards,
JD