G Style Universal Safety Exhaust Industrial Coupler, 1 2" NPT x 1 2" Body Flow PATENTED NPT thread size:1 2" Male NPT T Style KWIK CHANGE® plugs are made 1700PK T Style KWIK CHANGE® plugs are made of case hardened steel which is ideal for applications requiring a durable and long lasting pneumatic coupler and are plated to resist rust PART NUMBER DESCRIPTION P 18 O Ring 362B 015 Connect Shaft 361015 Valve Bady 361016 Valve Washer SPP 50250 Spring Pin ( 5×25) 361018 Cylinder Washer 361A19 Piston 362020 Cylinder Sleeve P S038 O Ring (S040) P S040 O Ring (S040) 361023 Cylinder Lock Plug 361A24 Cylinder 361027 Quick Change Retainer PATENT # US D1 PATENTED Milton ®'s G Style Universal Safety Exhaust couplers safely bleed excess air pressure and disengage fittings without dangerous blow back from trapped pressure inside your air line or hose