Hydraulic performance of trough valves

Abstract

This Test Report replaces 'Pest Report No. TI 15 for an earlier model of the "Jobe" valve. Modifications have affected the hydraulic performance of this valve. A full description of the test procedures and equipment is contained in Project Report P/2 (2nd Edition) of the New Zealand Agricultural Engineering Institute issued in 1971. Also contained in P/2 are the individual performance graphs of a number of commercially available trough valves in New Zealand.