ISO 7790 pdf download Hydraulic fluid power — Four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08 and 10 — Clamping dimensions 1 Scope This International Standard specifies clamping dimensions of four-port modular stack valves and fourport directional control valves, sizes 02,03, 05,07, 08, and 10, on mounting surfaces, The dimensionsand sizes conform to...