Product Introduction

Thedouble instrument valve is a combination of two needle valves in series, whichcan complete the circulation or cutoff of the medium together. A single needlevalve can also be used to realize the circulation or cutoff of the medium, andthe other needle valve remains normally open. Double instrument valves can bewidely used in many industries such as petrochemical, metallurgy,thermoelectric, pharmaceutical, gas, electromechanical and so on.

Product Design Specification

Design&Manufacture：ASME B16.34

End to end ：In accordance with the requirements ofmanufacturer or user

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

Inspection & Test：API 598；ASMEB16.104

Product Features

Interacting two-valve structure to prevent misoperation and double insurance function

Special lock dismissal to prevent the bonnet from rotating and improve the safety ofthe valve

The external thread is used, that is, all the threads avoid contact with the mediumon the sealing stuffing box, and the protection thread is not bitten or damaged

The valve core is looped on the valve stem, and the valve stem rotates at themoment of closing, and the valve core does not rotate, thereby avoiding thesealing surface of the sealing surface and improving the service life of thevalve

Combination Of Material

Product Range

Nominal Size：1/8~2”(DN6~DN50)

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

Suitable Temperature：-29~538℃

Operation：Hand wheel