Piping & Valves
The Reliable Model DDV is an FM Approved diaphragm-operated deluge valve designed for fire suppression systems. Constructed from ductile iron with a fabric-reinforced EPDM diaphragm, it ensures low friction loss and supports vertical or horizontal installation. Available in multiple sizes and end connections, it offers hydraulic, pneumatic, or electric actuation options. The pressure-regulating versions provide controlled outlet pressure up to 200 psi. Easy maintenance is ensured with all trim connections integrated into the valve body.