B&W's Diamond Power® Progressive Helix Mechanism (PHM) device is a precision, geared indexing mechanism that shifts the nozzle starting position by a known amount each cycle. With this, hundreds of operating cycles are required before the nozzle repeats the same cleaning path. This allows for a more complete cleaning coverage and significantly reduces tube damage due to erosion.

We recommend installing the PHM device wherever high-performance sootblower nozzles are used, or in any application to improve blower coverage and minimize the potential erosive effects of sootblower cleaning.

Benefits:

• Improves cleaning
• Reduces tube erosion; in many cases eliminating the need for tube shields
• Prolongs lance tube life
• Combats lance tube sagging
• Reduces lance inside diameter localized corrosion
• Prevents lance outside diameter build-up
• Distributes lance roller-wear over full lance surface

Features:

• Multi-indexing
• Field upgrade/retrofit
• Precise indexing
• Applicable with oscillator cleaning
• Designed for both two-roller and four-roller carriages
• Bolt-in assembly