| 摘要 |
A pressure regulating valve controller (2) includes a housing (4). A piston (30) having a surface portion (57,107,157) is arranged in the housing. A spring seat (26) is arranged in the housing adjacent the piston. The spring seat includes a surface section (73,123,173). A diaphragm (50) is arranged in the housing between the surface portion of the piston and the surface section of the spring seat. The diaphragm includes an opening (90,140,190). A diaphragm retention device (80,130,180) is arranged in the opening of the diaphragm. The diaphragm retention device is configured and disposed to contact each of the surface portion of the piston and the surface section of the spring seat to reduce forces on the diaphragm. |
