Anti Static Device In Gate Valve

To avoid static sparkle an antistatic device is designed on the valve to derive the accumulated static from the ball. To avoid static sparkle an antistatic device is designed on the valve to reduce or derive the static charge from the ball. Fig 2 fire safe design.

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Anti static device in gate valve.

China anti static device ball valve manufacturer. Anti static devices 20 are provided between the stem 15 and valve ball 14 and between the stem 15 and body 10. Soft seated ball valve plug valve and gate valve shall have an anti static device. The test of the device shall be carried out in accordance with section.

An insert 19 screwthreadably mounted in the body 10 retains the valve ball 14 and seat rings 18 in their operating positions. The seat steam and body joint of ball valve are with fire safe design. Application of anti static device in valves. In api 6d 2014 page 23 5 23 anti static device states.

In this article we will talk about the anti static device of ball valve during the process of valve operating the friction between the soft seat and the metal ball will cause static inside the valve body which could potentially spark and light the fluid if it is flammable or even lead to an explosion or a fire. Api 6d 2014 5 23 anti static device stipulates as follows. The valve ball 14 is sealed to the body 10 by suitable seat rings 18. Soft seated ball valves plug valves and gate valves shall have anti static devices api 6d 2014 only stipulates that soft seat shall have anti static device but does not require metal to metal seat to have anti static device.

Antistatic spring ball valves cast steel body astm a216 wcb size dn50 pn20 astm a351 cf8 ball. When open and close the valve the friction between the ball and the non metal seat will produce static charges.

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