Check with your airline in case you have connecting flights overseas as part of your journey to Australia. It may be the case that countries you pass through en route to your destination may require a separate transit visa. Please refer to visa requirements of the specific country.
Hydraulic Placard. If the fire sprinkler system is hydraulically designed, hydraulic placard(s) should be placed on or near the. riser by the installing contractor. This sign should. be able to withstand environmental elements and. permanently marked with information for each. hydraulically designed area. The information should.
Spool Valve. Fluid flow in and out of the hydro-boost is controlled by what is known as a spool valve. Spool valves are used in a variety of hydraulic components, such as the valve body of an automatic transmission. A spool valve is basically a hollow cylinder with a number of rings machined into it (see Figure 2).