Valves

Functional Classification and Applications

Depending on the specific task within the system structure, the product range encompasses a comprehensive selection of advanced valve designs:

• Pressure Control Valves – essential for system protection and stabilization. This group includes safety and relief valves (e.g., DB, DBD types) that protect the system against overload, pressure reducing valves (e.g., DR type) that maintain a constant downstream pressure, and sequence or accumulator disconnect valves (e.g., DA, DZ types) that control the order of hydraulic operations.
• Flow Control Valves – designed for precise management of actuator speeds. They include throttle valves (e.g., MG, MK types) and advanced flow control regulators (2-way and 3-way), which guarantee a constant flow rate regardless of pressure fluctuations (load changes) in the system.
• Check and Shut-off Valves – ensuring free fluid flow in one direction and complete isolation in the opposite direction. This group features standard check valves (e.g., S, RK types), pilot-operated check valves (single and double hydraulic locks that prevent loads from dropping), and ball shut-off valves.

Structural Variations and Mounting Configurations

To provide maximum design flexibility, PONAR Wadowice valves are manufactured in various mounting configurations, allowing for seamless integration into any application type:

• Subplate mounting – compliant with international ISO/CETOP standards, enabling the construction of manifold block systems.
• Sandwich (modular) mounting – allowing for economical and compact vertical stacking of valves directly beneath directional control valves.
• Threaded (in-line) mounting – for direct installation into hydraulic pipelines using threaded ports.
• Cartridge (screw-in) mounting – dedicated for space-saving installation within custom-machined hydraulic manifold blocks.

Actuation and Specialized Executions

The product line comprises both direct-operated and pilot-operated components, which can be actuated mechanically, manually, or electrically. The portfolio also includes advanced proportional valves (controlling pressure or flow via electrical current signals) as well as specialized executions – including intrinsically safe versions with ATEX certification, engineered for safe operation in environments with potential dust and gas explosion hazards.

All valves are designed to operate across extensive ranges of working pressures ($p_{max}$) and flow capacities ($Q_{max}$), ensuring minimal flow resistance, high sealing integrity, and extended operational lifetime.