1P-40-OT P40 Series Tractor Hydraulic Control Valve

Product Overview

The 1P-40-OT, 2P-40-OT, 5P40-OT and 6P40-OT belong to the P40 series monoblock directional control valves, specifically designed for tractors, loaders and other agricultural/mobile equipment. Featuring a cast-iron body and precision-ground spools, these valves support 1 to 6 sections with a rated flow of 40 L/min and maximum working pressure of 250 bar. Fully interchangeable with common P40 series units, every valve undergoes 100% simulated operating-condition testing for reliable multi-function control in agricultural and mobile hydraulic systems.

Technical Specifications 

• Model: 1P-40-OT / 2P-40-OT / 5P40-OT / 6P40-OT (P40 series)
• Type: Monoblock directional control valve
• Number of sections: 1–6 (customizable)
• Rated flow: 40 L/min
• Maximum working pressure: 250 bar (some versions up to 315 bar)
• Tank port pressure: max. 50 bar
• Control method: Manual lever (pneumatic, electro-hydraulic options available)
• Spool functions: Double-acting, single-acting, motor, float etc.
• Port sizes: P/T G1/2, work ports G3/8
• Operating viscosity range: 15–75 mm²/s
• Ambient temperature: –40 °C to +80 °C
• Weight: from approx. 3 kg (depending on sections)

Key Technical Advantages

1. Compact monoblock construction: High-strength cast-iron body with low leakage, ideal for space-constrained mobile equipment.
2. Flexible multi-section configuration: 1–6 sections available with various spool functions to meet tractor multi-cylinder control needs.
3. High interchangeability: Compatible interfaces and mounting dimensions with common P40 series for direct drop-in replacement.
4. 100% functional verification under simulated conditions: Every unit is fully tested across pressure-flow and switching characteristics before shipment, ensuring field reliability.

Application Areas

• Front loader and rear hitch control on tractors
• Multi-cylinder operation on agricultural machinery
• Mini-excavators and skid-steer loaders
• Log splitters and material handling equipment
• Mobile hydraulic systems in construction and industry

Expert Maintenance Tips

Ensure clean ports and tighten to the specified torque. Maintain required fluid cleanliness to prevent spool sticking. Periodically check lever operation and internal leakage. If pressure is insufficient or response is slow, first inspect filters and fluid contamination. For long-term storage keep the valve filled with oil and cycle periodically. Always use original-specification seals when servicing.