Overview: The document provides technical specifications and operational details for the 1CE Series Overcentre Valve, specifically the 1CE20 model, manufactured by Integrated Hydraulics Ltd and Integrated Hydraulics Inc. These valves are designed for static and dynamic load control in hydraulic systems, preventing runaway in case of hose bursts and allowing thermal expansion relief.

Specifications:

• Rated Flow: 20 litres/min (5 US GPM)
• Max Load Induced Pressure: 270 bar (4000 psi)
• Relief Setting: 350 bar (5000 psi)
• Operating Temperature: -20°C to +90°C
• Body Material: Standard aluminium (up to 210 bar), steel option available
• Seal Kit: SK1276 (Nitrile), SK1276V (Viton)

Applications: The overcentre valve is suitable for mounting directly into a cavity in the body of a cylinder, motor, or rotary actuator. It is used in applications such as aerial platforms, cranes, and motor applications where load control is critical.

Operation: The valve features a check section for free flow into the actuator and a pilot-assisted relief valve section for controlled movement. The relief section is set to open at a pressure 1.3 times the maximum load-induced pressure, with pilot ratios available for optimization.

Pilot Ratios:

• 3:1: For extremely unstable applications
• 4.5:1: For applications with varying loads
• 8:1: For applications with relatively constant loads

Features: The valve is economical, fits simple cavities, and allows for quick field service. It is made of hardened and ground steel with zinc-plated external surfaces.

Ordering Information: The document provides detailed ordering codes for different configurations, including cartridge only, cartridge and body, and dual body options. It also specifies adjustment means, port sizes, and seal types.

Additional Notes: The document includes diagrams and flow-pressure charts to illustrate valve operation and performance. It also notes that specifications are subject to change without notice.