1004A

Exhaust Valve 1004A 1/2"x1/2" elbow with nut and nut.

1004B

Exhaust Valve 1004B 1/2"x1/2" elbow with nut and nut. 
Max pressure 200 psi

1006

Exhaust Valve 1006 3/4"x3/4" elbow with nut and nut.

1004BA

Exhaust Valve 1004BA 1/2"x1/2" elbow with nut and nut.

1008

Exhaust Valve 1008 1" NPT x 1" elbow with nut.