Special double ball valve

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Special double ball valve

Production Introduction

The special double ball valve is a valve with a circular passage as a starting and closing member, and the ball rotates with the valve stem to realize the opening and closing action. The opening and closing member of the special double ball valve is a holed ball that rotates around an axis perpendicular to the passage to achieve the purpose of opening and closing the passage. Ball valves are primarily used to open and close pipes and equipment media. Special double ball valves can be widely used in petrochemical, metallurgy, thermoelectric ,pharmaceutical, gas, electromechanical, aviation and many other industries.


Production Design Specification

Design&Manufacture:ASME B16.34;

End to end:In accordance with the requirements of manufacturer or user.

End Connection:ASME B16.25;ASME B16.11;ASMEB1.20.1

Inspection and Test :API 598;ASME B16.104

Product Features

Interacting two-valve structure to prevent mis-operation and double insurance function

The special limit structure prevents the valve stem from rotating over the head and improves the reliability of the valve

Quick and easy opening and closing, low fluid resistance

The utility model has the advantages of simple structure ,relatively small volume, light weight and convenient maintenance

Good sealing performance

No vibration, low noise

Combination Of Material


BodyBallStemSeat ring(soft)Seat ring(hard)Packing
A105  F304

F316  F321

F304L F316L


F316  F321

F304L F316L

F6a  F304

F316  F321

F304L  F316L








Product Range

Nominal Size:1/8″~2″(DN6~DN50)

Pressure Rating:ANSI / ASME 150LB~2500LB(PN16~420Mpa)

Suitable Temperature:-29~538℃

Operation:Hand wheel


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