Ariston Microswitch 573340 Pressure Gauge Valve 3 Way

Ariston Microswitch 573340 Pressure Gauge Valve 3 Way

The Ariston 573340 Microswitch is a genuine replacement component fitted to the 3-way pressure gauge valve in selected Ariston boilers. This microswitch monitors the position of the internal valve and provides an electrical signal to the boiler’s control board, ensuring correct operation of the pressure gauge and related safety functions.

A faulty microswitch can cause incorrect pressure readings, ignition issues, or intermittent boiler shutdowns, making this OEM part essential for accurate system performance and proper boiler protection.

Manufactured to Ariston’s strict quality standards, the 573340 microswitch ensures reliable operation, secure fitting and long-term durability.

Key Features

• Genuine Ariston OEM microswitch

• Part number: 573340

• Designed for the 3-way pressure gauge valve

• Provides accurate feedback to boiler electronics

• Essential for correct pressure monitoring and system safety

• High-reliability switch mechanism

• Direct like-for-like replacement

Compatibility
Commonly used in various Ariston combi and system boilers, including (but not limited to):

• Ariston Clas

• Ariston E-Combi

• Ariston Genus

• Ariston Microgenus & other models using 3-way gauge valve assemblies

(Always confirm compatibility with your model before ordering.)

When to Replace

• Boiler shows inconsistent or incorrect pressure readings

• Intermittent ignition or lockouts related to pressure monitoring

• Microswitch fails continuity tests

• Fault codes indicating gauge/valve switch malfunction

• During servicing if the component shows wear or sticking

Technical Specifications

• Manufacturer: Ariston

• Part Number: 573340

• Component Type: Microswitch for 3-way pressure gauge valve

• Function: Electrical feedback for system pressure monitoring

• Application: Ariston domestic gas boilers