مقبض مقياس الجهد لـ wgb/bbs/sgb De Dietrich JJX000937092

The potentiometer knob for WGB, BBS, and SGB boilers provides precise manual adjustment of burner output or temperature settings. This knob fits the potentiometer shaft securely, allowing easy tuning of control parameters. Over time, knobs can become loose, cracked, or lost, making adjustments difficult. Replacing with this compatible knob restores full functionality and ensures accurate setting changes. Ideal for maintenance technicians and DIY users, it is a simple yet effective replacement for keeping your boiler controls user-friendly.