Pressure Valves

Approx. Rs 17,682 / PieceGet Latest Price

Product Details:

Pilot operated pressure relief valve type DB... consists of the pilot valve (2) and the main valve (1). Pressure in a system through line P affects the lower side of the spool (4) and via jets (9), (10), (11) also affects its upper side and the poppet (6) of the pilot valve. At standstill, the pressure is equal on both sides of the spool. A spring (7) holds the spool (4) in the starting position. Lines P and T are separated from each other. If pressure in a system reaches the value set by the position of the adjustment element (5) and tension of the spring (3) of the pilot valve, the pilot poppet (6) opens and fluid flows via jets (9) and (10) and opened pilot valve (2) to a tank. The flow of control stream causes pressure drop at jets (9) and (10). In effect pressure acting on the lower side of the spool (4) is greater and the spool moves upwards, what allows excess fluid to be drained to a tank and pressure in a system to be limited to the set value.