ENGINEERING
The PISHGAM’s expertise in ball valve engineering covers most of the processes in oil, gas and petrochemical industries. Extensive experience gained over the past years from the design, development, and manufacture of custom-engineered solutions serves as the basis for mastering new challenges.
The wide range of products proven in practice can be customized in close cooperation with the customer to provide a commercially acceptable solution to meet the requirements of even the most complex applications.
Design of ball valve is based on flow passage sizing and material selection. Generally, flow passage sizing is based on the standard thermodynamic laws of fluid flow. The application of these laws is affected by the particular function of the valve plus the type and severity of the service.
To minimize material costs and optimize the valve design for the thermal/mechanical loadings, the design by analysis approach was taken. It is possible to compute the stresses and deflections for various shaft diameters , body thickness, and various disk shapes over the pressure range of the product.
Analysis based on the discipline of finite element techniques are becoming increasingly popular as an important tool for the design/analysis of valves and valve components to specified stress and deformation limits.
PISHGAM ball valves conform to the latest edition of the following standard specifications as to face–to–face dimensions, pressure ratings, materials of construction, design dimensions for some valve components to ensure adequate strength and procedures for the testing of ball valves.
- API: 6A, 6D, 607, 598
- ASME: B16.5, B16.10, B16.25, B16.34, B31.3, B31.4, B31.8
- MSS: SP25, SP44, SP53, SP54, SP55, SP61, SP72, SP82
- BS: 1503, 1504, 1560, 2080, 4504, 5146, 5351, 6755
- ISO: 14313, 14723, 15156
- ASME: Section V, Section VIII Div. 1 and 2 Section IX
- ASTM: E94, E142, E165, E280, E446, E709
- NACE: MR 01-75
- EN: 558,1503,1626,1983,5211,12266,12516,12567,12570,12627,12982