Model - 3VEE9 Process side - 1/2" NPT female Instrument side - 1/2" NPT female Vent test - 1/4" NPT female Maximum working pressure - 6000psi With threaded vertical port inlet and outlets, both test connections are positioned on the left and right hand side. The two isolating bonnets are positioned on the left and right hand side and the equalizing bonnet is positioned on the front and two drain plug provided on both side at instrument side.