Name: Pilot Operated Sequence Valve
Model No.: DZ30-1-30/21YM
Fit: Construction,LINDE Tractor, Crane, Forklift
Origin: China
Replace: YUKEN; REXROTH; VICKERS
Manufacturer: KYDAC
Material: Stainless Steel / Cast Iron
The DZ30-1-30/21YM Type Pilot Operated Sequence Valve is a high-performance hydraulic pressure control valve designed for pressure-dependent sequential operation of hydraulic actuators. Featuring a pilot-operated structure, the valve ensures accurate sequence control, stable pressure regulation, and reliable hydraulic performance in medium and high-pressure hydraulic systems. It is widely used in industrial hydraulic equipment, hydraulic power units, construction machinery, and automated hydraulic circuits.
| Specification | 10 | 20 | 30 |
| Max working pressure(Mpa) | 31.5 | ||
| Max. flow(L/min) | 200 | 400 | 600 |
| Pressure adjustment(Mpa) | 5 / 10 / 20 / 31.5 | ||
| Design number | 50 | ||
The DZ30 pilot operated sequence valve controls the operating sequence of hydraulic actuators according to system pressure. Hydraulic pressure from port A acts on the pilot control spool through the internal pilot oil circuit. When the inlet pressure reaches the preset pressure value, the pilot valve opens and actuates the main spool, allowing hydraulic oil to flow from port A to port B. This ensures that secondary hydraulic circuits operate only after the primary circuit reaches the required pressure.
The “YM” configuration means:
The DZ30-1-30/21YM sequence valve is widely used in:
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