The innovative Diamond Power EAPC poppet valve is an externally adjustable pressure control valve. Available as an option on new equipment or as a retrofit for long retractable sootblowers, it makes maintenance efficient and maximizes boiler cleaning uptime.
Long retractable sootblowers periodically require adjustment of head pressure settings to achieve desired steam pressure levels for cleaning. Historically, to adjust head pressure settings, standard poppet valves had to be closed and isolated and the sootblower shut off – oftentimes across the entire bank. The Diamond Power EAPC poppet valve was developed by our engineers specifically to solve this problem and has undergone significant design improvements since its first introduction in the 1990s.
The latest EAPC poppet valve design can be adjusted externally, while the sootblower is running, without binding or galling. Laboratory testing provided key information to solve critical friction contact points and surfaces, and to optimize trigger-to-steam contact patterns. Field tests in both utility and recovery boiler environments confirmed trouble-free operation in long-term use under severe operating conditions.
Long-term reliability and maintenance savings:
Longer service life: Free from internal binding or galling
Fewer manual interventions: Less time spent adjusting valves
Maximized sootblower availability, cleaning performance and flexibility
The valve adjustment procedure is simple and safe:
Install pressure gauge
Remove EAPC locking tab and reinstall to lock packing gland
Start sootblower
Turn adjusting nut with minimal torque effort
Reinstall EAPC locking tab
The EAPC poppet valve is available as optional equipment on all retractable Diamond Power sootblowers. In addition, the EAPC poppet valve can be retrofitted to any existing Diamond Power retractable sootblower as a replacement part or a rebuild of the current valve.
The EAPC poppet valve is available in two pressure classes:
Series 600 carbon steel – For service conditions to: 4.48 MPa @ 371˚C (650 psig @ 700 F)
Series 900 chrome-moly – For service conditions to: 6.55 MPa @ 482˚C (950 psig @ 900 F), or 7.58 MPa @ 454˚C (1100 psig @ 850 F)
The EAPC poppet valve incorporates several design features that enhance its performance and reliability:
Welded flexible valve seat and disc to prevent distortion from thermal stress
Long-term reliability with freedom from leakage
Pressure control disc made from materials proven to withstand steam service
Adjustment flexibility among styles
Steam yoke allows positive valve closure
Ready to upgrade? Contact us for more information on the Diamond Power EAPC poppet valve or to discuss retrofitting your sootblowers.
With over 120 years of experience and a strong global presence, US headquartered Diamond Power brings deep expertise in advanced boiler cleaning technologies and services. These solutions are widely used across the pulp & paper, utility, biomass, waste-to-energy, and industrial sectors.
With over 120 years of experience and a strong global presence, US headquartered Diamond Power brings deep expertise in advanced boiler cleaning technologies and services. These solutions are widely used across the pulp & paper, utility, biomass, waste-to-energy, and industrial sectors.
High-quality sootblower parts for Diamond Power and other brands
Easy sootblower upgrade for effective recovery boiler cleaning
Fine-tune steam settings safely while the sootblower is running
Outstanding durability and self-lubricating
Maintain high feed tube performance
Real-time heat transfer monitoring for optimized boiler cleaning
Automatically maintains a tight seal to eliminate steam leaks and extend packing life
