BRUCIATORE A GAS NATURALE ORIFIZIO #51 da RAYPAK RP2100 RISCALDATORE DIGITALE PISCINA
RAYPAK RP2100 DIGITAL POOL HEATER. This is fairly simple to replace if yours is defective - it does not require a major disassembly - just unthread the old orifice and screw in the new. This was removed from a working pool heater.