Opening and Closing Tags for Rotary Valve "Generally Open, Adjustments Underway, Generally Closed" Special 15-350B

[Features]·A valve open/close tag, rotating type. ·The letters represent "Normally open Under adjustment Normally closed."·It is made of laminated rigid PVC, measuring 90 × ø80 mm. ·By rotating the disc, you can switch between the 3 patterns of display.