Two-way Cover Plate Cartridge Valves

Type 1: Pressure and Direction Control Insert

Poppet structure, 1:1 area ratio

This versatile hydraulic valve insert combines both pressure control and directional control functions in a compact poppet valve design. The 1:1 area ratio ensures balanced operation, making it suitable for moderate pressure applications where precise control is required.

The poppet structure provides excellent sealing capabilities, minimizing leakage in critical hydraulic systems. As a multi-functional hydraulic valve component, it finds applications in various industrial machinery where space constraints demand integrated functionality.

Type 2: Normally Open Control Insert

Poppet structure, normally open, 1:1 area ratio

This normally open hydraulic valve insert features a poppet structure with a 1:1 area ratio, designed for applications requiring fail-safe operation. The normally open configuration ensures that in the event of control pressure loss, the valve defaults to an open position, allowing fluid flow.

Ideal for emergency systems and safety circuits, this hydraulic valve provides reliable performance in critical applications. The poppet design ensures minimal pressure drop when fully open while maintaining tight shut-off when energized.

Type B: Throttling End Insert

Poppet structure with throttling end, area ratio < 0.7

This direction control hydraulic valve insert features a poppet structure with an integrated throttling end, designed for applications requiring precise flow control. With an area ratio less than 0.7, it provides excellent metering capabilities for fine-tuned directional control.

The throttling end allows for controlled flow rates while maintaining the poppet valve's superior sealing characteristics, making this hydraulic valve suitable for applications where both direction and flow rate control are essential.

Type 7: High Ratio Throttling Insert

Poppet structure with throttling end, area ratio > 0.7

Similar to Type B but with an area ratio greater than 0.7, this hydraulic valve insert offers different flow characteristics for directional control applications. The higher area ratio allows for greater flow capacity while maintaining throttling capabilities.

This hydraulic valve is particularly useful in systems where higher flow rates are required alongside directional control, providing efficient operation with minimal pressure loss during full flow conditions.

Type 3: Low Ratio Direction Insert

Poppet structure, area ratio < 0.7

Designed specifically for directional control applications, this hydraulic valve insert features a poppet structure with an area ratio less than 0.7. The design prioritizes precise switching characteristics and reliable sealing performance.

As a dedicated direction control hydraulic valve, it excels in applications where accurate flow direction management is critical, providing fast response times and long service life in demanding operating conditions.

Type 4: High Ratio Direction Insert

Poppet structure, area ratio > 0.7

This direction control hydraulic valve insert features a poppet structure with an area ratio greater than 0.7, making it suitable for higher flow applications. The design balances directional control capabilities with efficient flow characteristics.

The higher area ratio of this hydraulic valve allows for reduced pressure drop during operation, making it ideal for systems where energy efficiency is a priority alongside reliable directional control.

Type 5: Active Control Insert

Poppet structure, opened by pilot pressure

This actively controlled hydraulic valve insert utilizes pilot pressure to actuate the main poppet, providing precise control in directional applications. The design allows for remote operation and integration into complex control systems.

The pilot-operated mechanism of this hydraulic valve enables it to handle higher flow rates with minimal control energy input, making it suitable for large-scale industrial applications where efficient control is essential.

Type 6: Balanced Active Insert

Active control, no area difference at port B

Designed with a balanced structure featuring no area difference at port B, this active control hydraulic valve insert provides stable operation across varying pressure conditions. The balanced design minimizes the effects of pressure fluctuations on valve performance.

This hydraulic valve excels in applications where consistent performance is required despite varying system pressures, offering reliable active control with reduced sensitivity to pressure changes in the main circuit.

Check Valve Insert

One-way flow, poppet structure, internal pilot oil with replaceable orifice

This specialized hydraulic valve insert functions as a check valve, allowing fluid flow in one direction while preventing reverse flow. The poppet structure ensures reliable sealing in the reverse direction, with internal pilot oil control for enhanced performance.

A key feature of this hydraulic valve is its replaceable orifice (flow restrictor), which allows for easy customization of flow characteristics without replacing the entire valve. This flexibility makes it suitable for a wide range of applications where precise one-way flow control is required.

The design ensures minimal pressure drop in the forward direction while providing tight shut-off in the reverse direction, making it an essential component in many hydraulic systems requiring circuit protection and flow direction management.

Relief and Protection Insert

Spool structure, normally closed, with overflow and limit protection

This specialized hydraulic valve insert combines overflow and limit protection functions in a spool valve design. Normally closed, it opens when preset pressure limits are exceeded, providing essential system protection against overpressure conditions.

The spool structure of this hydraulic valve ensures smooth operation and precise pressure control, making it suitable for protecting sensitive hydraulic components from damage due to excessive pressure. The integrated functions eliminate the need for multiple valves, reducing system complexity.

As a critical safety component, this hydraulic valve provides reliable overpressure protection while maintaining system efficiency during normal operation, making it ideal for industrial hydraulic systems where equipment protection is paramount.

Pressure Reducing Inserts

Spool structure, available in normally closed and normally open configurations with integrated check valve

These specialized hydraulic valve inserts are designed for pressure reduction applications, maintaining a preset lower pressure in a secondary circuit regardless of fluctuations in the primary circuit pressure. The spool structure provides precise pressure regulation characteristics.

Available in both normally closed and normally open configurations, these hydraulic valve inserts feature an integrated check valve that allows free flow in the reverse direction. This combination of functions makes them highly versatile for various pressure control applications.

The normally closed version blocks flow until the control pressure is applied, while the normally open version allows unrestricted flow until activated. Both versions of this hydraulic valve maintain consistent outlet pressure within tight tolerances, ensuring stable operation of downstream components.

Special Application Inserts

Various configurations including stroke limiters and integrated overflow functions

This category encompasses a range of specialized hydraulic valve inserts designed for specific applications requiring unique functionality. These include inserts with stroke limiters, integrated overflow capabilities, and combined functions for complex hydraulic control scenarios.

Stroke-limited versions of this hydraulic valve allow for precise control of flow rates by restricting the valve opening, providing adjustable flow characteristics. Models with integrated overflow functions combine directional control with pressure protection in a single component.

Other variants include inserts with proportional pressure regulation and manual maximum pressure overflow, offering both automated and manual control options. High-pressure and low-pressure control versions ensure there's a suitable hydraulic valve solution for virtually any pressure control application.

Portless Control Cover

This basic control cover for cartridge valves features no external pilot ports, designed for applications where control is managed internally or through alternative means. The simplified design reduces potential leak points and minimizes installation space requirements.

Compatible with various hydraulic valve inserts, this cover provides a cost-effective solution for straightforward applications where external pilot control is not required, maintaining the integrity and performance of the hydraulic valve assembly.

Pilot Port Control Cover

Equipped with external pilot ports, this control cover enables remote operation of the hydraulic valve insert. The pilot port allows for connection to a separate control circuit, providing flexible activation options for the main valve function.

This design is essential for hydraulic valve systems requiring centralized control or where manual operation of the main valve is impractical. The robust port design ensures reliable connection and long-term performance in demanding environments.

Adjustable Stroke Control Cover

With pilot port, adjustable stroke limiter and remote control port

This advanced control cover features multiple functional elements, including a pilot port, adjustable stroke limiter, and remote control port. The stroke limiter allows for precise adjustment of the hydraulic valve's opening characteristics, customizing flow performance.

The remote control port enables integration into complex hydraulic control systems, providing versatility in operation. This hydraulic valve cover is ideal for applications requiring fine-tuned performance and integration with centralized control architectures.

Accessory-Ready Control Covers

These versatile control covers are specifically designed to accommodate additional components, enhancing the functionality of the base hydraulic valve. The modular design allows for easy integration of auxiliary elements without major system modifications.

Variants include covers with integrated hydraulic control check valves and models designed to accept shuttle valves. The shuttle valve-equipped versions (Type X1Z and X1Z1) allow for priority flow control or pressure sensing from multiple sources in hydraulic valve systems.

The accessory-ready design provides system designers with flexibility to customize hydraulic valve performance for specific applications, ensuring optimal functionality while maintaining compact dimensions and system integrity.

Overflow Function Control Covers

These specialized control covers integrate overflow functionality into the hydraulic valve assembly, providing pressure relief capabilities alongside the main valve function. This integration reduces system complexity and component count.

Advanced variants include models with hydraulic unloading features, allowing for system depressurization under specific conditions to reduce energy consumption and component wear. Other versions incorporate flow control valves to limit pilot stage flow, enhancing hydraulic valve stability.

The integrated overflow design ensures rapid response to pressure spikes, protecting system components while maintaining the primary functionality of the hydraulic valve. These covers are ideal for compact systems where space is at a premium but comprehensive protection is required.

Proportional Pressure Control Cover

With proportional pressure regulation and manual maximum pressure overflow

This sophisticated control cover combines proportional pressure regulation with manual maximum pressure adjustment capabilities in a single hydraulic valve assembly. The proportional control allows for precise, infinitely variable pressure settings, while the manual override provides a safety backup.

This hydraulic valve configuration is ideal for applications requiring both automated pressure control and the ability to set absolute maximum pressure limits, ensuring safe operation while maintaining process flexibility.

Pressure Reducing Control Covers

High and low pressure variants with pilot flow control

Available in both high-pressure and low-pressure configurations, these control covers provide specialized pressure reducing functionality for the hydraulic valve assembly. The high-pressure version includes a pilot flow control valve to manage control circuit dynamics.

These hydraulic valve covers maintain precise pressure control across varying flow rates, ensuring stable downstream pressure regardless of fluctuations in the supply pressure or flow demand, making them suitable for sensitive hydraulic systems.

Multi-stage Control Cover

With overflow function and optional second stage pressure

This advanced control cover provides multi-stage functionality, combining overflow protection with the ability to set an optional second stage pressure. This dual-pressure capability allows the hydraulic valve to operate under different pressure regimes based on system requirements.

The versatility of this hydraulic valve cover makes it suitable for complex systems requiring different pressure settings for various operational modes, providing integrated functionality that reduces overall system complexity.