Leafield Marine - Valves for Inflatable Structures leafield marine, pressure relief valves, inflation valves, deflation valves, topping up valves, transfer valves, gas inflation systems, life rafts, inflatable boats, marine evacuation systems, inflatable tent and awning valves Pressure relief valves, inflation/deflation valves, topping up valves, transfer valves, gas inflation systems for life rafts, inflatable boats and marine evacuation systems, inflatable tent and awning valves