Applications Designed specifically for use on tractor mounted air blowers and to replace the multiple pipe connections typically used to connect the blower to a swing check and air relief valve. Use Fastens directly to blower using available TTMA thread adapters Features Manufactured with a 4" TTMA flange connection for fastening directly to the blower 2" NPT port for air relief valve Interchangeable inlet / outlet ports Interchangeable inlet / outlet ports Construction Aluminum body White silicone spring loaded flapper Stainless steel hardware Silicone lid seal Compact unit includes high flow swing check, port for air relief valve and inlet / outlet ports