Anti Static Device In Gate Valve

Fig 2 fire safe design.

Anti static device in gate valve.

China anti static device ball valve manufacturer. In api 6d 2014 page 23 5 23 anti static device states. Application of anti static device in valves. Antistatic spring ball valves cast steel body astm a216 wcb size dn50 pn20 astm a351 cf8 ball.

The test of the device shall be carried out in accordance with section. Anti static device jv090006 stainless steel fire safe ball valve iso 5211 direct mount a high performance fire safe stainless steel bodied full bore ball valve suitable for various heavy duty applications with an iso 5211 mounting pad enabling the valve to be fitted with various actuation options. To avoid static sparkle an antistatic device is designed on the valve to derive the accumulated static from the ball. Api 6d 2014 5 23 anti static device stipulates as follows.

An insert 19 screwthreadably mounted in the body 10 retains the valve ball 14 and seat rings 18 in their operating positions. 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. When open and close the valve the friction between the ball and the non metal seat will produce static charges. The valve ball 14 is sealed to the body 10 by suitable seat rings 18.

To avoid static sparkle an antistatic device is designed on the valve to reduce or derive the static charge from the ball. Anti static devices 20 are provided between the stem 15 and valve ball 14 and between the stem 15 and body 10.