SL6PB3-6X/

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth SL6PB3-6X (R900590651) is an advanced isolator valve designed for subplate mounting, offering precise control and reliable performance for hydraulic systems. This releasable check valve is engineered to provide leak-free blocking of one actuator port, ensuring stability even during extended periods of inactivity. The valve's construction comprises a robust housing, a seat poppet, a compression spring, and a control spool. An optional preopening feature as a ball seat valve enhances its functionality. The SL6PB3-6X allows fluid to flow from direction A to B without the need for external pilot pressure, provided that the condition pA > pB (cracking pressure of the compression spring) is met. For reverse flow, the valve ensures a hydraulically tight seal. The application of sufficient pilot pressure at port X actuates the control spool, disengaging the seat poppet and enabling bidirectional flow by keeping the valve actively open. Two distinct versions are available: Version A with preopening and Version B without preopening. Version A incorporates a two-stage setup that allows secure unloading at low pilot pressures while minimizing switching shocks through dampened decompression. Conversely, Version B may experience sudden unloading of pressure volume, potentially causing wear and noise due to switching shocks. The SL6PB3-6X can be modified to type SL by swapping plugs; it is imperative that one plug remains installed at all times. This valve adheres to ISO standards for porting patterns and offers various cracking pressures tailored to specific applications. Additionally, users can select between models with or without preopening according to their needs. Corrosion-resistant designs are optionally available for harsh environments. In summary, the Bosch Rexroth SL6PB3-6X isolator valve offers versatility and durability for effective hydraulic system management with options for customization according to operational requirements.