11. The boilers had an operating pressure of and were equipped with Ramsbottom safety valves. 12. Once operating pressure has been reached, the mass spectrometer can start its measuring operation. 13. It operates at a maximum allowable operating pressure of. 14. These include an electric heat source that is automatically regulated to maintain the operating pressure . 15. This semi permeable membrane can operate at reduced operating pressures as compared to reverse osmosis. 16. The operating pressure of its boiler was reduced from. 17. The mode of operation of the plasma system will change if the operating pressure changes. 18. The report wrongly quoted the operating pressure as. 19. The advantage of this new approach is the elimination of complexities associated with operating pressure vessels. 20. The performance of porous membranes are dependent on temperature as well as operating pressure and flow.