Main Standards For Stainless Steel Stop Valves
Stainless Globe Valve The valve body has the following structural forms: straight-through, direct-flow and right-angle. The straight-through is the most common structure, but its fluid resistance is the largest. The direct-flow fluid resistance is small, and it is mostly used for fluids containing solid particles or high viscosity. The right-angle valve body is mostly forged, which is suitable for stop valves with smaller diameters and higher pressures.
The installation and maintenance of stainless steel stop valves should pay attention to the handwheel and handle operated stop valves can be installed at any position of the pipeline. Handwheels, handles and large-motion mechanisms are not allowed to be used for lifting. The flow direction of the medium should be consistent with the direction of the arrow shown on the valve body.
Main standards for stainless steel stop valves:
1. GB/T 12233-2006 "General valves - iron stop valves and lift check valves"
2. GB/T 12235-2007 "General valves - flanged steel stop valves and lift check valves"
3. JB/T53174-94 "Product quality classification of stop valves"
4. JB/T53165-92 "High-pressure balanced stop valves"
5. GB/T 587-2008 "Marine flange bronze stop valves"
6. GB/T 590-2008 "Marine flange cast iron stop valves"
7. GB/T 8464-2008 "Iron and copper threaded valves"
8. GB8465.2-87 "Internally threaded gate valves, stop valves, ball valves, check valves - basic dimensions - iron stop valves".
