No leakage of two sides self-seal ball structure.		Special designed PTFE seal materialless the friction of the trim movement.
Excellent  cuting ability of O type valve trim		Optional O type or Vtype valve trim

    *All electrical and mechanical components are sealed in aluminum alloy shell with high instant explosion resistance pressure of 1.6MPa  isolating the ignition source effectively.

    *With "o "ring seal up to protection grade IP68 Each explosion-proof surface adopts circular clearance and CNC precision machining to achieve stable and reliable explosion-proof performance

    *Powered by 1-phase 3-phase or DC power supplies

    *Bus communication, Analog signal are available for your choice  

    *Permanently lubricated and maintenance free drive train

    *Optional torque limiter/remote control
Explosion-proof grade:
 TA: explosion-proof series products of explosion-proof level for Exd Ⅱ BT4
 The Ex
 D:  Explosion-proof type: Explosion-proof
 Ⅱ: Electrical equipment used in explosive gas environment  except the coal mine of device
 B:  Explosion level:  the size (width and clearance) of the explosion-proof surface in accordance with the explosion level
 T4: Temperature group:  the maximum temperature in surface  is 135℃ 
In appendix B of GB3836.1-2000 the grade and temperature of combustible gas are listed in detail

 [NOTED] the types and groups of explosive media around the place where the product is used must be consistent with those permitted by the product.Otherwise it can't play the explosion-proof effect in non-applicable environment