Key features/benefits
DRF Type valves are used in municipal and agricultural irrigation networks. Basic valve simpy consists of 3 pieces: Body, cover and the actuating diaphragm. Valve inside and outside is coated with thermoplastic Nylon11 (RILSAN). This coating enables low frictional loss, silent opera-
tion and higher corrosion and cavitation resistance compared to other coating types.
The special reinforced diaphragm of DRF induces the control valve required balancing spring force by the design and material details, eliminating the mechanical spring which uneffieciently occupies space and has an abrasive effect on rubber material. The required spring force is induced by the linear elasticity of the design details. Elimination of a mechanical spring and the related mechanical parts in the control chamber gives the actuating diaphragm very long life by eliminating the abrasion caused by metal on rubber friction. Less number of operating body parts increase reliability of the valve in long term.
The valve does not need maintenance with its diaphragm designed to sustain precise regulation is formed by three different parts.
