***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 SV20PA2-4X/M (R900599535) is an advanced isolator valve designed for subplate mounting or threaded connection, catering to applications requiring the leak-free blocking of one actuator port, even during extended periods of inactivity. This valve is characterized by its robust construction which includes a housing, seat poppet, compression spring, and control spool, with an optional preopening feature as a ball seat valve. It operates by allowing flow from A to B without the need for external pilot pressure and closes hydraulically tight in the opposite direction when pA is greater than pB due to the cracking pressure of the compression spring.
Featuring a pilot pressure at port X that shifts the control spool towards a ball seat valve in version A, this design pushes the seat poppet out of its seat, enabling free flow in both directions while actively keeping the valve open. The pressure ratios on each side of the control spool and area ratios at both the control spool and seat poppet are crucial for ensuring that the seat valve opens actively.
The SV20PA2-4X/M offers two versions: Version A comes with preopening which allows for secure unloading even under low pilot pressures and helps avoid switching shocks through dampened decompression. This is beneficial for reducing premature wear on components and minimizing noise. Conversely, Version B lacks preopening which may result in sudden unloading of included pressure volume and potential switching shocks.
This Bosch Rexroth valve also provides flexibility through modification options; it can be converted from type SV to SL by exchanging plugs, ensuring one plug remains installed at all times. It supports various porting patterns according to ISO standards NG6, NG10, NG16 for subplate mounting, features internal pilot oil return, and comes in a corrosion-protected design. The product specifications include different cracking pressures as options and individual installation sets for check valves are available. The maximum operating pressure is indicated as bar units while maximum flow capacity is given in liters per minute (l/min), ensuring compatibility with a wide range of hydraulic systems and applications.
$1,133.00 USD
More are expected on March 31, 2025
Status: This product is temporarily out of stock.
Qty: Delivered as early as March 31, 2025 when ordered in