Pressure gauge 0 - 400bar 1/4"

The 0-400 bar 1/4" pressure gauge is a measuring component intended for monitoring operating pressure in the high-pressure systems of pressure washers. Thanks to its wide measuring range, it is suitable for systems where monitoring higher pressure values is required, as well as for more detailed diagnosis of pump operation and regulating components.

MPN / reference: 150394
Measuring range: 0-400 bar
Connection: 1/4"

APPLICATION

The pressure gauge is used in typical service and operating work:

• monitoring operating pressure in high-pressure washers,
• checking high and low pressure during machine diagnostics,
• replacement of a damaged or unreadable pressure indicator,
• inspection of machines working in workshop, service, and industrial applications,
• assessment of pump, valve, and pressure regulation system operation.

SYMPTOMS - WHEN IT IS WORTH REPLACING

It is worth considering replacement of the pressure gauge when the following appear:

• no proper pressure indication,
• pointer “sticking” or delayed reaction to parameter changes,
• unreadable scale or damaged lens,
• leak in the area of the pressure gauge connection,
• mechanical damage to the housing after use or transport.

HOW TO CHOOSE THE RIGHT PART

Selection of the pressure gauge should be unambiguous:

• verify the 0-400 bar measuring range,
• confirm the 1/4" connection,
• check the manufacturer number: MPN 150394,
• compare the mounting method and connection type with the removed part.

For measuring components, compatibility of range, connection, and mounting method is critical, because these affect both operational safety and reliability of the reading.

COMPATIBILITY

The pressure gauge should be selected based on MPN 150394, the 0-400 bar range, and the 1/4" connection, according to the service documentation of the machine or component. The part should not be selected solely by the general description “pressure gauge for a washer” without checking the technical parameters.

[faq]

When is it better to choose a 0-400 bar pressure gauge instead of a 0-250 bar one?|When the system operates at higher pressure values or when you need additional measuring range for safe monitoring of parameters. Selection should follow the machine specification.

Is a 0-400 bar pressure gauge also suitable for checking low pressure?|Yes, but at lower values the reading may be less detailed than with a gauge that has a narrower range. That is why the range should always be selected according to the real operating parameters of the system.

Can incorrect pressure gauge readings make pump diagnostics more difficult?|Yes. An incorrect reading can suggest a pressure issue where the cause lies elsewhere, or conversely hide an actual drop in performance.

What can a jumping pointer during washer operation mean?|It may result from the nature of the system’s operation, pressure pulsation, or a problem with the pressure gauge itself. If the readings are clearly illogical, it is worth checking the condition of the indicator and the measuring system.

How can I check after installation whether the pressure gauge works properly?|After installation, verify the tightness of the connection, observe whether the readings change smoothly during operation, and check whether the reading corresponds to machine behavior and expected working parameters.

[/faq]