Small stop valve, used as a drain cock or compression release valve on our Red Wing motors (3/16-40). Also used as cylinder drains on steam engines, blow down cocks on water gauges, and many other applications. Available in 5/32-40 and 3/16-40 (straight thread). The 5/32-40 was used on the early model Red Wing motors.
THREAD INFO Click for information on model pipe threads.