German OLEAR valves OLEAR models OLEAR prices

OLEAR valves, also known as speed synchronization valves, are a general term for flow divider valves, flow combiner valves, one-way flow divider valves, one-way flow combiner valves, and proportional flow divider valves within hydraulic valves. Synchronization valves are mainly applied in hydraulic systems with synchronous control of dual-cylinder and multi-cylinder configurations. There are many methods to achieve synchronous motion, but hydraulic systems using flow divider-combiner valves (synchronization valves) offer advantages such as simple structure, low cost, ease of manufacturing, and high reliability; therefore, synchronization valves are widely used in hydraulic systems. The synchronization provided by flow divider-combiner valves is speed synchronization. When two cylinders or multiple cylinders bear different loads respectively, the flow divider-combiner valve can still ensure their synchronous motion.

OLEAR valve functions

The function of a flow divider valve is to supply the same flow rate (equal flow division) from the same oil source to two or more actuators in a hydraulic system, or to supply flow to two actuators at a certain ratio (proportional flow division), thereby maintaining synchronous speed or a fixed ratio between the two actuators. [1] The function of a flow combiner valve is to collect equal return flow rates or proportional return oil volumes from two actuators, thereby achieving speed synchronization or a fixed ratio between them. A flow divider-combiner valve combines the functions of both a flow divider valve and a flow combiner valve.

OLEAR valve classification

Classified by adjustment method: fixed flow divider-combiner valves, self-adjusting flow divider-combiner valves, adjustable flow divider-combiner valves, and combined self-adjusting and adjustable flow divider-combiner valves. The above series of hydraulic valves can be designed as low-flow flow divider-combiner valves. Among these, fixed-structure synchronization valves can be further divided into two structures: spool-type and hook-head type. This series of hydraulic valves can also be classified by flow distribution method into: equal-flow divider valves and proportional-flow divider valves, with the commonly adopted ratio being 2:1. Low-flow synchronization valves can also be designed according to the required ratio.

Difference between OLEAR valve flow combiner valves and flow divider valves

1) The flow combiner valve is installed on the return oil lines of two actuators, combining the return oil flow from the two load paths; 2) The two flow sensors of the flow divider valve share the inlet pressure; the greater the flow through the flow sensor, the lower its outlet pressure. The two flow sensors of the flow combiner valve share the outlet; the greater the flow through the flow sensor, the higher its inlet pressure. Therefore, the pressure feedback direction of the flow combiner valve is exactly opposite to that of the flow divider valve; 3) The flow combiner valve can only ensure synchronization during the return stroke of the actuators.

Weidou Intelligent Technology specializes in selling German OLEAR valves, OLEAR safety valves, OLEAR globe valves, OLEAR control valves, OLEAR solenoid valves, OLEAR ball valves, OLEAR proportional valves, OLEAR diaphragm valves, OLEAR butterfly valves, OLEAR hydraulic transmission valves, OLEAR check valves, OLEAR pressure reducing valves, OLEAR relief valves, OLEAR sequence valves, OLEAR counterbalance valves, OLEAR throttle valves, OLEAR directional control valves. Original imports from Germany. Welcome inquiries and orders from customers.