Factory lamp kit for the Aqua Ultraviolet VIPER 400W UV sterilizer with 3" stainless steel housing. Restores peak germicidal performance in large, high-flow systems using a single high-output, low-pressure (amalgam) UV-C lamp.
Genuine Aqua UV 400-watt HO UV-C lamp matched to 3" stainless VIPER units
OEM-matched components to maintain correct fit, sealing, and UV dose
Service-friendly kit minimizes downtime on critical life-support loops
Ideal for aquaculture, big ponds, and commercial aquarium systems
For VIPER 400W sterilizers in 3" stainless steel configuration
Not compatible with 2" stainless or 3" plastic VIPER bodies, nor other wattages (800W/1200W)
Lamp Power: 400 W (low-pressure amalgam UV-C)
Peak Wavelength: ~254 nm (germicidal)
Housing Fit: 3" stainless VIPER chamber
Service Life: Replace about every 9–12 months of continuous use (or per UV meter/dose targets)
(1) 400W UV-C lamp — VIPER, 3" stainless fit
(1) Set of end seals/O-rings sized for the 3" stainless end assembly
(1) Set of required end hardware/insulator(s) (kit dependent)
Quick install sheet
Disconnect power and let the unit cool.
Isolate and depressurize plumbing; drain the chamber.
Open end assembly; remove old lamp/seals (avoid touching new lamp glass).
Inspect/clean the quartz sleeve; replace if cloudy, etched, or cracked.
Lightly lube new O-rings with silicone-safe grease; seat squarely.
Reassemble hand-tight, then snug—do not overtighten.
Restore flow, power ON, verify strike, and check for leaks after first run.