| 摘要 |
FIELD: manufacture of fittings; pumps handling viscous abrasive fluids under pressure. SUBSTANCE: ball shut-off member is pressed in guide bush of valve unit between seat and cover. Ball shut-off member has cavity where load in form of permanent magnet is placed core of induction coil is rigidly secured on cover. Shut-off member and seat are made from non-magnetic material and cover is made from soft magnetic material. EFFECT: enhanced reliability. 4 cl, 2 dwgs
|
