The difference between the ball valve Q41F and the ball valve Q41H includes the valve body length and mounting dimensions
It doesn't make any difference, but only the two valves are sealed differently.Q stands for ball valves, 4 stands for flanges, and 1 stands for straight throughThe back is the sealing surface Code: F is fluoroplastic, and H is stainless steel hard sealed.It should be noted that there is no standard valve valve nominal pressure and the back is not the same, because now there are several standard flanges, will cause the number of edge size, thickness, flange bolts empty different. Nominal pressure difference will also cause length difference, some high pressure will have connection form request, also causes the length to be able to distinguish!
Body length (surface spacing) and external flange size (installation size) should be based on the valve specifications (nominal diameter, nominal pressure) to check,American Standard surface spacing and flange standards are: ASME 16.10/ASME 16.5The national standard is GB/T 12221/GB/T 9113.1The European Union is the EN508-1/EN1092-1Other national standards are no longer elaborate. If you need, you can enter a standard number to search for. It's easy to find
Upstairs, that's right. Number each unit represents a meaning,F and H are sealing surface material (position within fifth yards, second yards - omitted operation mode), F is the valve seat material is fluorine plastic, soft sealing valve -------------------H Cr13 or stainless steel material as the seat, is a metal hard seal material.
