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| The valve stem what role mainly in the application field |
| Date: 2014-09-18 Hits: 676 |
| Stem in the process of the valve opening and closing, pull, pressure and under torsional force, and direct contact with the media, and packing friction and relative movement between at the same time, therefore, when choosing stem material must ensure that its under the specified temperature of sufficient strength, good impact toughness, abrasion resistance and corrosion resistance. The stem and ball joints and the valve stem and valve body contact should be an antistatic mechanism, prevent electrostatic agglomeration on the sphere. Safety design should prevent stem under the pressure of work was "blown out", the valve stem blow-out proof of the flange on the disposal of a circular ring, in order to reduce the friction coefficient. Traditional stem processing 1. The characteristics of the valve stem threads using spiral fly |
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