F — 220 V, 50Hz, 1 phase Single-acting Double-acting A — relief valve (stroke - retract) G — 2-position valve (stroke - retract) I — 3- position valve (stroke- retention- retract) ADD — two (3 or more D4D) 3-position valves for several cylinders (stroke - retention - retract). |
* Valves are manufactured on special order