R900910905 Bosch Rexroth Flow control valve

The valve type Z2FRM is a 2-way flow control valve in sandwich plate design. It is used for pressure and temperature-independent flow stabilization. The valves basically consist of housing (1) and one or two flow control cartridges. Throttling of the flow from channel A➁/B➁ to channel A➀/B➀ is realized at the throttling point (3). The throttle cross-section is set by rotation of the adjustment type (2) between the throttling point (3) and the throttle bolt (4). For pressure-independent flow stabilization in channel A➀/B➀, a pressure compensator (5) is connected downstream to the throttling point (3). The pressure compensator (5) is pressed by the compression spring (7) against the plug screw (8) and remains in open position if there is no flow through the valve. When there is a flow through the valve, the pressure in channel A➁/B➁ applies a force on the pressure compensator (5). It is set to control position until the forces are balanced. If the pressure in channel A➁/B➁ rises, the pressure compensator (5) moves in closing direction until the forces are balanced again. Due to this continuous compensation of the pressure compensator, a constant flow is obtained. The free return flow from channel A➀/B➀ to channel A➁/B➁ is via the check valve (6). Type Z2FRM 6 C…

➀	component side
➁	plate side