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Zhejiang Zhengfeng Valve Co.,Ltd
Tel: 86-577-67388156
Fax: 86-577-67318585
Email: sales@zfvalve.com
Contact person: DAVID
Add: Hengtong Road, Wuxing Industrial Park, Wenzhou, Zhejiang, China. 325105

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Gas ball valve production is also inseparable from the gas ball valve mold
- Nov 02, 2017 -

1, normally open when the gas ball valve in the coil when the power is located in the coil around the static core components will sprocket the magnetic force, gas ball valve components gravity and return spring spring will move the core together with the stem assembly up and up, So that the valve plate attached to the stem assembly and the valve seat emergency fit and tightly closed, the valve closed. After the power failure, the valve plate in the return spring spring and stem component gravity effect to restore the original position, the valve opens, the pipeline to restore normal ventilation.

2, normally closed in the non-power state, fixed in the gas ball valve assembly on the valve plate in the gravity and return spring elastic effect with the valve seat emergency joint, the valve is closed.