P120 Monoblock Directional Valves
Product Overview
P120 Monoblock Directional Valve is a heavy-duty one-piece cast Hydraulic valve, designed for high flow mobile equipment. It integrates multiple control spools, main relief valve and load holding check valves in a single cast iron body. It controls flow direction, adjusts flow rate and limits pressure of the hydraulic system. This valve supports customizable spool quantity from 1 to 8 spools, built for heavy-load mobile Machine. Parallel circuit design offers stable operation and outstanding dirt tolerance in harsh outdoor working conditions.
Technical Specifications
- Valve Type: Monoblock directional control Hydraulic valve
- Rated flow: 120 L/min
- Nominal pressure: 25 MPa; Max working pressure: 31.5 MPa (315 bar)
- Back pressure: ≤1 MPa
- Operation: Manual lever control; optional pneumatic / hydraulic remote control
- Spool quantity: 1 ~ 8 spools customizable
- Spool function options: O, Y, P, A and other spool land types
- Body material: High-strength cast iron
- Operating temperature: -20℃ ~ +80℃
- Recommended hydraulic oil viscosity: 10~400 mm²/s
- Filtration requirement: ≤10μm
Working Principle
This integrated Hydraulic valve accommodates all control spools inside one solid cast body. When the control lever is actuated, the spool slides to switch internal oil passages, changing oil flow direction of the hydraulic system. This action drives hydraulic cylinders or hydraulic motors to lift, swing, extend, retract or halt. The built-in adjustable relief valve caps maximum system pressure to protect hydraulic components. Each spool can be equipped with a load holding check valve to prevent load drop from oil backflow, guaranteeing safe operation of the Machine. Multiple spools can operate independently or simultaneously.
Core Advantages
1. Solid monoblock cast iron construction, high structural rigidity, low internal leakage and strong shock resistance
2. Rated flow up to 120L/min, higher handling capacity compared with P40 / P80 series
3. Built-in adjustable relief valve and anti-drop check valve to protect the complete hydraulic system
4. Flexible customization: spool numbers, spool functions and control modes optional
5. Good contamination resistance, reliable performance for heavy-duty mobile Machine
Application Range
Suitable for hydraulic system of various heavy mobile Machine: medium & large loaders, heavy tractors, tipper trailers, sanitation vehicles, aerial work platforms, forestry machinery, farm harvesting equipment and construction auxiliary machinery.