As shown in the pneumatic symbol below, the Quick Exhaust Valve has three connecting ports: a pressure port (P) & an exhaust port (R) on opposite ends of the valve, and an outlet port (A) on the top of the valve. When air pressure is applied to the pressure port (P), an internal check valve piston allows air to move from the pressure port (P) to the outlet port (A). When the air pressure is removed from the pressure port (P), the internal check valve piston allows air to exhaust from the outlet port (A) to the exhaust port (R). The Quick Exhaust Air Valve is designed to allow air to be quickly exhausted from an air reservoir or an air cylinder to achieve higher cycle speeds.

Quick Exhaust Valve (Units in mm)
Part No.	Bore (NPT)	G (NPT)	L	W	H	A	B	C	D	Cv
QE N1/8	1/4″	1/8″	46	20	32	30	4.3	27	40	1
QE N1/4	3/8″	1/4″	62	25	40	39	5.6	33.5	55	1.3
QE N3/8	3/8″	3/8″	62	25	40	39	5.6	33.5	55	1.4
QE N1/2	3/8″	1/2″	98	38	64	60	8.5	51	90	4