| 摘要 |
A valve apparatus for controlling fluid flow wherein the apparatus comprises a valve assembly and valve housing; the valve housing including a valve chamber incorporating fluid inlet and outlet conduits and a valve seat; and the valve assembly including a valve stem and collar; the stem extending at one end into said chamber and adapted to rectilinear but limited movement within said collar; a swivel bearing cup having a bearing surface and rim abutting the terminal end of said valve stem within said valve chamber; and a resilient, compressible, annular valve diaphragm mounted about said valve stem and swivel bearing cupt within said chamber. |
