| Sprung open air intake shut down (shut off) valves which can be held closed by the application of air pressure CHALWYN PVX VALVES Slim, light weight, 3", 5" and 8" bore butterfly valves which are closed by air pressure. These products are designed to be mounted between flanges or can be supplied fitted with hose adaptors selected from a range of 28 size options. |
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| Other air intake valve options Simultaneous automatic shut down of diesel fuel supply Internal crankcase breather modifications |