For use on Eastwood's modular air management systems. 3-way lockout exhausts all downstream pressure when closed and can be in the locked in the closed position with a padlock. Body is black coated zinc, slide is high-impact plastic and Teflon. Buna-N O-rings and steel construction. Comes with mounting hardware. Compatible with; 20601, 20472, 20473, 20474 systems. 20590, 20591 20599, 20602, 20603, 20606, 20607 components.