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1. Advanced seat: seat designed with multiple experience to ensure valve seal. Low friction coefficient and low operating torque. Multiple seat materials for wide range.
2, switch and correct handle: the flat head valve stem, and handle the connection is not misplaced, thus ensuring the handle switch state in accordance with the valve.
3, the locking device: to prevent the valve switch wrong operation, the valve fully open, seated position lock hole, to ensure that the valve is in the right place.
4, the valve stem fly structure: the valve stem is bottoms type, prevent pressure, at the same time can be in after the fire, and the body form metal contact, to ensure that the valve stem seal.
5, antistatic performance: in the ball, the valve stem and valve body between spring, will be generated switching process of electrostatic export.
6, fire-proof structure: all parts (ball and valve body, flange, the valve stem and valve body) designed to metal contact, meet the requirements of refractory, accord with API6FA, API607 rules.
Materials for Main Parts
|Name||carbon steel||stainless steel|
|Packing gasket||PTFE/asbestine/Expanded graphite|
|double end bolt||35CrMoA||A193-B7||stainless steel|