1. Hydraulics - Pneumatics
  2. Valve
  3. Poppet check valve
  4. Bosch Rexroth - Industrial Hydraulics

Poppet check valve Z2S 6

poppet check valve
poppet check valve
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Other characteristics
pilot-operated, standard

Min.: -30 °C (-22 °F)

Max.: 80 °C (176 °F)


315 bar (4,568.7 psi)


6 mm (0.236 in)


• - Size 6 • - Component series 6X • - Maximum operating pressure 315 bar • - Maximum flow 60 l/min Features • - Sandwich plate valve for use in vertical stackings • - Porting pattern according to DIN 24340 form A (without locating hole) • - Porting pattern according to ISO 4401-03-02-0-05 (with locating hole) • - For the leakage-free blocking of one or two actuator ports, optional • - Various cracking pressures, optional (see ordering codes) • - With pre-opening, optional • - Check valve installation sets available individually • - Special versions on request Product description The isolator valve type Z2S is a releasable check valve in sandwich plate design. It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times. In direction A① to A② or B① to B②, there is a free flow; in the opposite direction, the flow is blocked. If, for example, there is a flow through the valve in direction A① to A②, the control spool (1) is moved in the direction of the B side, opens the ball seat valve (2) and then pushes the poppet (3) off its seat. Hydraulic fluid can now flow from B➁ to B➀. In order to allow the ball seat valve (2) to be safely closed, the control spool (1) must be hydraulically unloaded (see circuit example). Pre-opening • - Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. • - The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely.


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