Spare nitrogen system can be supplied in request of customers' requriements:

    1. If the accumulator or the pump can not provide the control manifold with enough power fluid, the spare nitrogen system can be used to provide high pressure air to close the ram blow out preventer.
    2.The spare nitrogen system can provide emergency air source for the driller's panet and the auxiliary control panel.
    3.The spare nitrogen system can provide emergency air source for the pneumatic pump.
    4.The spare nitrogen system can provide air source for the accumulators.