Welded valve configurations for SAP (sterile access port) and GMP (good manufacturing practice) are designed for the control of ultrapure and sterile fluids. The configurations are made from two separate forged or casting valve bodies and fall into industry standard patterns. They are welded to be fully drainable and can be operated by either a pneumatic actuator or a manual handwheel. The user can choose the required configuration in two separated specification keys. The first details the geometry, body and diaphragm materials while the second specifies body sizes, end connections, operator and surface finishes