Nominal Diameter：DN50-DN300
Nominal Pressure：PN6-PN40
Body Material：WCB,CF8,CF3,CF8M,CF3M
Stem Material：20Cr13,F304,F316,1Cr17Ni2,17-4PH
Disc Material：WCB,CF8,CF3,CF8M,CF3M
Seat Material：25,A105,F304,F304L,F316,F316L
Temperature Range：≤200℃
Applied Service：Water,Sewage,Oil and other,Corrosion Medium,etc.
Manufacture Design：GB/T 12238,GB/T 26146
Face to Face Dimension：GB/T 12221,API 609
Flange Dimension：GB/T9124,HG/T 20592,HG/IT 20615,HG/T 20623
Test and Inspection：GB/T 13927,API598

Products Introduction

The bi-directional Metal Seated Spin Ball Valve adopts the face to face dimension as butterfly valve's, double eccentric structure and spherical sealing pair, the valve stem rotates 90° through the driving device, and the closure parts (disc) rotates 90°to realize the opening and closing of the valve. It is widely used in the pipeline flow regulation of municipal water supply and drainage, petrochemical, thermal power and environmental protection, mining and metallurgy and other industries.

 

Products Feature

Resin Sand Casting Process

The valve body and valve disc casting adopt resin sand casting process, not only the casting quality is reliable, but also the casting surface outline is clear, beautiful, and high dimensional accuracy.

 

Double Offset Structure Design

Using the principle of double eccentric wedge tightening, to achieve the purpose of opening, adjusting and wedge tightening through the transmission mechanism, it is metal surface ring with hard surface contact seal between seat sealing and disc sealing. When closed, the disc surface is qradually along the seat, with the shear and scraping function,effectively remove the scale obstacles, scraping the solid particles, and achieve reliable sealing.

 

Bi-directional

The valve seat adopts DBB (single piston effect) sealing principle, clever sealing substructure, reliable sealing, can effectively achieve bi-directional sealing. When the medium flows according to the flow direction, the force applied on the drive stem drives the disc, so that the disc sealing surface produces forced sealing force, acting on the seat sealing,then the pipeline medium pressure produces auxiliary sealing force in the same time, so that the disc sealing surface presses the seat sealing surface to form a good seal. When the medium flows according to the flow direction two, the valve seat is under the action of DDB (single piston effect) principle, so the valve seat sealing presses the disc sealing surface to form a good seal.