Foot valves and inlet suction strainers. One way foot valve assists in pump priming. Strainer acts as a basic filter and keeps out rust or debris from your tank and protects the pump internals. Available in stainless steel or alloy/plastic. Threads are BSP and we stock fittings and hose to help plumb these into your pump or filter application. Use with all fuels, diesel, unleaded petrol, oils or water.