Fuse valves designed not to restrict oil supply flow, our 1/2?, 3/4" NPT and 1" NPT small fusible valve meets the code requirements for automatic closing of oil supply lines in case of fire.
Fuse valves can be manually operated and includes a replaceable 165?F link which melts allowing the valve to close
Fuse valves designed not to restrict oil supply flow, our 1/2?, 3/4" NPT and 1" NPT small fusible valve meets the code requirements for automatic closing of oil supply lines in case of fire. 
1/2" NPT - 