Anti Static Device In Globe Valves

An insert 19 screwthreadably mounted in the body 10 retains the valve ball 14 and seat rings 18 in their operating positions.

Anti static device in globe valves.

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. The valve ball 14 is sealed to the body 10 by suitable seat rings 18. Soft seated ball valve plug valve and gate valve shall have an anti static device. 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.

Anti static principle of floating ball valve is as shown in the figure. How to test that the anti static. Application examples of anti static devices in valves. An antistatic device ensures a positive electrical connection between the body pipeline and the plug so that the static charge can never accumulate.

The test of the device shall be carried out in accordance with section. The anti static device discharges static electricity from opening and closing parts of the valve to the natural world which avoids the static spark to cause the medium to burn or explode and protects the pipeline. Fig 2 fire safe design. The seat steam and body joint of ball valve are with fire safe design.

It is used to protect the valve against spark that may ignite the fuel flowing through the valve. When open and close the valve the friction between the ball and the non metal seat will produce static charges. Api 6d 2014 5 23 anti static device stipulates as follows. Antistatic devices are much more necessary on rotary valves where the closure element ball etc is frequently floating on nonconductive polymer seats.

To avoid static sparkle an antistatic device is designed on the valve to reduce or derive the static charge from the ball. Greetings anti static device as mentioned in valves handbook is used to reduce the static charge generated on the ball due to friction.