| 摘要 |
FIELD: valving systems. ^ SUBSTANCE: gate valve comprises housing, gate member, drive, and seal. The gate valve is provided with sealing screws that receive shafts with movable spline joints. The ends of the shafts are provided with unmovable gear wheels that engage the gear wheels of the other shafts. ^ EFFECT: enhanced reliability. ^ 7 cl, 4 dwg |
