P80 Hydraulic Control Valve | 1P80 2P80 3P80 4P80 5P80 | Badestnost Style Monoblock Valve

The P80 Series monoblock directional control valves from Chengyuan Hydraulic are high-performance components fully compatible with Badestnost industry standards. Designed for precise flow distribution via manual, pneumatic, or electronic control, this series is the primary choice for driving cylinders or motors. For core models like 1P80, 2P80 to 5P80, we utilize high-strength HT300 wear-resistant cast iron. Every valve undergoes 100% internal leakage and pressure testing under simulated conditions to ensure superior sensitivity under continuous high-pressure operation, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Series Model: P80 Series (Monoblock Valve)

• Number of Spools: 1 to 5 spools (1P80, 2P80, 3P80, 4P80, 5P80)

• Nominal Flow Rate: 80 L/min (21 US gpm)

• Max Operating Pressure: 250 bar (25 MPa) / 315 bar Peak

• Max Back Pressure (T port): 50 bar (5 MPa)

• Spool Types: O (Cylinder), A (Motor), Y (Semi-Cylinder), etc.

• Control Options: Manual, Pneumatic, Electro-hydraulic, Cable control

• Port Sizes: P/T/N Ports G1/2″ or G3/4″; A/B Work Ports G1/2″

• Ambient Temperature Range: -40°C to +60°C

Key Technical Advantages:

• High-Strength Monoblock Casting: The body is cast as a single piece of premium gray iron, providing enhanced rigidity and preventing housing deformation under 31.5 MPa surges. This ensures spool movement remains smooth and reliable.

• Precision Ground Spools: Each spool is hard-chrome plated and micro-ground to achieve a micron-level fit with the valve bore. This significantly minimizes neutral leakage and improves the load-holding capability of cylinders.

• Integrated Sensitive Relief Valve: Standard equipped with a high-performance main relief valve with a wide adjustment range. It effectively dampens pressure spikes, protecting expensive pumps and motors from damage.

• Parallel Circuit Design: Features a parallel oil circuit supporting simultaneous or independent operation of multiple functions. It also supports “Carry-over” (Power Beyond) functionality for seamless series connection with additional valves.

Application Areas:

• Agricultural Machinery: Tractor hitches, harvester auxiliary hydraulics.

• Construction Equipment: Mini-excavators, skid-steer loaders, log splitters.

• Municipal Vehicles: Road sweepers, refuse compactor lift systems, sanitation trucks.

Expert Maintenance Tips:

• Spool Neutral Alignment: When installing manual linkages, ensure the handle is in a natural neutral position without pre-tension. Improper alignment can cause system overheating or actuator drift.

• Back Pressure Management: Although the P80 resists backpressure, it is recommended to route return lines directly to the tank with minimal bends. Excessive backpressure reduces spool control sensitivity and shortens seal life.

• Oil Filtration Standards: For optimal performance and spool longevity, maintain system oil cleanliness at NAS Class 9 or ISO 19/16 or better.