SPRINGLESS DIAPHRAGM VALVESThe Series DCS/RDCS springless dust collection valves are ideal for use with the Series DCT1000 and Series DCT500 duct collection timer boards. Both have the option for either coupling or NPT connections. The "T" Series has female threaded connections, and the "C" Series has a coupling connection. Both the "T" and "C" versions have a 90° angle between the inlet and outlet.