Hawei PDMP22-44/X24 three-way proportional pressure reducing valve, original from Germany

Hawei PDMP22-44/X24 three-way proportional pressure reducing valve, original from Germany

HAWE PDMP22-44/X24 is a product produced by HAWE in GermanyNon direct acting proportional pressure reducing valve(also known as three-way proportional pressure reducing valve). It is mainly used to convert high and fluctuating input pressure into a constant output pressure based on the magnitude of the input electrical signal.

The following are the core parameters and selection interpretation of this model:

core parameters

• Product type: Pilot operated proportional pressure reducing valve, consisting of a main valve and a proportional pilot control part.

• Pressure range: The maximum pressure at port P is 420 bar, and the output pressure at port A can be adjusted between 5 and 350 bar.

• Maximum flow rate: 120 L/min.

• Applicable medium: hydraulic oil.

• Special function: It has overload balancing function (acting as a pressure limiting valve). When the secondary pressure is affected by external forces and exceeds the set value, it can provide safety protection.

Interpretation of Model Code

Model numberPDMP 22 - 44 / X 24The meanings of each part are as follows:

Note: This model contains/X24With/G24There are two ways of writing, usually X24 and G24 both represent DC 24V power supply, mainly due to different labeling habits.

Key Design Description

There are two key points to note when using this valve, which are directly related to its design principles:

1. External amplifier required: The valve itself cannot work directly and must be used in conjunction with a proportional amplifier (such as HAWE's EV1M2 or EV1G1 type). The amplifier converts the input control signal into an appropriate current to drive the electromagnet.

2. It is necessary to connect the oil drain port: Due to the structural principle, the valve always leaks oil during operation. The L port on the valve body must be connected separately to the oil tank without pressure, otherwise it will affect the control accuracy and even cause the valve to malfunction.

Hawei PDMP22-44/X24 three-way proportional pressure reducing valve, original from Germany