Roemheld GmbH CLR-2954-429 Sequence Check Valve

Roemheld CLR-2954-429 is a compact hydraulic sequence valve with an integrated check valve (ND 4 family) designed for pressure‑dependent sequencing in power workholding circuits, enabling a first actuator to reach its stop before subsequent cylinders extend. It features a G1/4 port, a maximum operating pressure of 500 bar, and a maximum flow of 8 L/min, making it suitable for single‑line clamping configurations where a single pressure supply sequentially drives multiple actuators. The unit offers an adjustable opening/sequence pressure in the 10–75 bar range, with a check valve cracking pressure of about 0.15 bar, and weighs approximately 0.52 kg. Mounting is accomplished with M5 screws, and multiple valves can be manifold‑mounted to form a battery with one common P‑line for synchronized clamping – a common setup in fixtures where hydraulic clamping cylinders operate in a prescribed order. In typical use, the CLR‑2954‑429 ensures a controlled, throttle‑free passage once the preset pressure is reached, promoting uniform pressure rise across cylinders and reliable workpiece positioning in fixture workholding applications.