鋳鉄グローブバルブ

1.の紹介鋳鉄GローブVアルベ

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

2. Parameters of 鋳鉄GローブVアルベ

シール面	13Cr、STL、PTFE、ナイロン、ボディ素材付き

3. Advantages of 鋳鉄gローブvアルベ

1) The structure of the 鋳鉄gローブvアルベ is simpler than that of the gate vアルベ, and it is more convenient to manufacture and maintain.
2）シール面of 鋳鉄gローブvアルベ is not easy to wear and scratch, and the sealing performance is good. There is no relative sliding between the vアルベ disc and the sealing surface of the vアルベ 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 鋳鉄gローブvアルベ is opened and closed, the disc stroke is small, so the height of the shut-off vアルベ is smaller than that of the gate vアルベ, but the structure length is longer than that of the gate vアルベ.
4) 鋳鉄gローブvアルベ has a large opening and closing moment, which is laborious and takes a long time.
5) The medium channel in the 鋳鉄gローブvアルベ 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 鋳鉄gローブvアルベ PN≤16MPa, the downstream flow is generally adopted, and the medium flows upward from the bottom of the vアルベ flap; when the nominal pressure PN≥20MPa, the reverse flow is generally adopted, and the medium flows downward from the top of the vアルベ flap. In order to increase the seal performance. When in use, the shut-off vアルベ medium can only flow in one direction and cannot change the direction of flow.
7) The vアルベ flap is often eroded when the 鋳鉄gローブvアルベ is fully opened.

4.よくある質問