Pressure Control Valves

HYDAC offers a wide range of direct acting and pilot operated Relief and Reducing Valves. In general, the direct acting valves are faster in response while pilot operated valves have flatter pressure/flow characteristics.

HYDAC Relief Valves are available in direct acting poppet and pilot operated spool types with optional pressure adjustment ranges up to 6000 psi (420 bar). Models are available for flow rates up to 80 gpm (300 l/min).

HYDAC Pressure Reducing Valves are direct acting and pilot operated spool types with optional pressure adjustment ranges up to 5000 psi (350 bar). They have been designed to maintain a constant secondary regulated pressure regardless of pressure variation in the primary system and have an additional relieving feature for the secondary circuit protection. Models are available for flow rates up to 26 gpm (100 l/min).

Features

• Adjustable under full pressure
• Stroke limiting device for enhanced safety
• Positive stop to prevent spring from over adjustment
• Screens to protect pilot orifice from contamination and ensure reliable operation
• Variety of adjustment mechanism options
• Fast response with excellent stability
• All external surfaces zinc-plated
• Hardened poppets or spools ensure minimal wear and extend service life
• One piece body maximizes reliability and minimizes the effects of eccentricity
• Industry common cavity-compact size