Special Issue

Special Issue

4.11 - 1251 ratings - Source

Hitachi screw pumps, which have a high efficiency and little noise, are used as the oil pumps. ... seat comes in contact with the bronze seal on the outside of the cast steel valve disk, thus providing the water seal. ... On the top of the servomotor there is a manual locking device for holding the valve in fully closed position.

Title:Special Issue
Author:Hitachi review
Publisher: - 1965


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