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Soft Seated Ball Valves

Continuous improvement and innovation in the engineering department has since long contributed to the development of high quality Qublock ball valves this has led to stable and safe plant operations.

Product Range

Rating Class150 – 2500#, JIS10K – 63K
Size 1/2” – 40” (15A – 1000A)
Temperature -196 deg.C to 500 deg.C
Leakage Rate API598, Tight Shut Off, Zero Leakage
Type Floating, Trunnion, Full Port, Reduced Port, Three way Port
Body Material A351CF8M/A351CF8/A216WCB/SCS14A/SCS13A/SCPH2/Titanum,Hastelloy/Inconel and others
Seat Material PTFE, R-PTFE,Carbon Garbon Graphite, PEEK and Others
Design Code API608, ASME B16.5, ASME B16.34, ISO5211, ISO5752, API 6D, API607, ISO 15848

The soft seated ball valves provide variety advantages and excellent performance such as superior shut-off across a range of pressure with minimum operating torque, cryogenic operation for service down to -196°C, fugitive emission ISO15848, oil free, corrosion resistance and so on. This Qublock soft seat ball valve has been specially designed for rugged oil field and petrochemical applications – Polymerization (PE/PP), EDC/VCM/PVC, Steam cracking, Polysilicon, Propane dehydrogenation and also ultra pure application - semiconductor, display, DI water.

A choice of body, trim, and seat materials is available to suit an extensive range of applications. Qublock soft seated ball valves meet the special requirement of its customers with valves that are designed on the basis of accurate data, extensive experience, excellent technical know-how, and superior precision marching.

Double Seal Structure

The double seal structure is designed according to ISO 15848. All parts where emission is possible have two stages of sealing structure with soft seals.

Tight Shut-Off Sealing Performance

Soft-seated Qublock ball valves exhibit a tight shut-off sealing performance. This is the result of trustable engineering data and excellent production control.

Wide Range of Material Applications

Depending on customer requirements, the best suitable materials is selected from among various materials.

Solid Resistance through Hard-Facing Aspects

The combination of ball and seat is the most critical part of a valve; thus, Qublock provides Hard-Facing solutions on the basis of past experience, operation cycle, and compatibility with the base material as well as fluid conditions.