سوپاپ گلوب آهن

1. معرفیچدنGلوبVالو

چدنgلوبvالو is a forced-sealing vالو, so when the vالو is closed, pressure must be applied to the disc to force the sealing surface to not leak. When the medium enters the vالو from below the disc, the resistance that the operating force needs to overcome is the friction force of the vالو stem and packing and the thrust generated by the pressure of the medium. The force to close the vالو is greater than the force to open the vالو, so چدنThe diameter of the vالو stem of the gلوبvالو should be large, otherwise the vالو stem will bend up failure.

2. Parameters of چدنGلوبVالو

آب بندی صورت

13Cr ،STL ، PTFE ، نایلون ، با مواد بدنه

3. Advantages of چدنgلوبvالو

1) The structure of the چدنgلوبvالو is simpler than that of the gate vالو, and it is more convenient to manufacture and maintain.
2) سطح آب بندیof چدنgلوبvالو is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the vالو disc and the sealing surface of the vالو body when opening and closing, so neither abrasion nor abrasion is serious. The sealing performance is good and the service life is long. .
3) When the چدنgلوبvالو is opened and closed, the disc stroke is small, so the height of the shut-off vالو is smaller than that of the gate vالو, but the structure length is longer than that of the gate vالو.
4) چدنgلوبvالو has a large opening and closing moment, which is laborious and takes a long time.
5) The medium channel in the چدنgلوبvالو is tortuous, the fluid resistance is large, and the power consumption is large.
6) When the nominal pressure of the medium flow direction of the چدنgلوبvالو PN≤16MPa, the downstream flow is generally adopted, and the medium flows upward from the bottom of the vالو flap; when the nominal pressure PN≥20MPa, the reverse flow is generally adopted, and the medium flows downward from the top of the vالو flap. In order to increase the seal performance. When in use, the shut-off vالو medium can only flow in one direction and cannot change the direction of flow.
7) The vالو flap is often eroded when the چدنgلوبvالو is fully opened.

4. سوالات متداول