Outline

The  three-eccentric hard seal butterfly valve adopts the design of three-eccentric structure. There is no friction between the disc and seat within the full travel range of disc opening and closing, so that the leakage caused due to seat abrasion during seat opening and closing in rotary control valves is eliminated. The seat adopts the multi- level structure and uses the combination of metal and nonmetal materials to form the sealing face. It can work excellently under the service conditions of high temperature and low temperature. The 70D Series butterfly valve is featured by long service life and excellent sealing performance. It is suitable for control and shut-off applications of almost all gases and liquids in the industrial process control.

Actuator and auxiliary

control device

Pneumatic

Electric

Pneumatic-hydraulic

Worm gear

Parameters of control valves:               Applications

Trim features:       three-eccentric structure,     Air separation, chemical industry, petroleum

multi-level sealing seat,      Chemical fiber, electric power,

hard seal                  metallurgy

Body type: straight-through type                 Pharmacy, environmental protection

Bonnet type: standard integral type

Flow characteristic: approximately equal percentage    Shut-off class: ASMEB16.104VI

Pipe connection type:        wafer type, flange type           

Manufacturing range

Size range: DN2" -48"

Applicable temperature range: -196℃-530℃                    Pressure rating: 150-600LB

Actuator type:             pneumatic piston actuator           PN1.0-6.4Mpa

 electric actuator                   Connection type: wafer type,

                                                        flange type