Luminor RQ-600 Sleeve for LBH4-251, LBH5-251, LBH6-251
Luminor RQ-600 Sleeve for LBH4-251, LBH5-251, LBH6-251
Description
The RQ-600 is a genuine Luminor replacement quartz sleeve for LUMINOR BLACKCOMB-HO LBH4-251, LBH5-251, and LBH6-251 High Output systems, plus their NSF Class A/B, hot water (HW), low-UVT (-50), and total organic carbon (TOC) variants below. It's an authentic Luminor part, not an aftermarket substitute, so your system keeps performing the way it was tested and certified.
Fits these Luminor BLACKCOMB-HO systems
- LBH4-251
- LBH5-251
- LBH6-251
- LBH5-251B (NSF Class B, non-monitored)
- LBH6-251B (NSF Class B, non-monitored)
- LBH6-251A (NSF Class A, monitored, includes UV sensor)
- LBH4-251-HW (hot water rated)
- LBH5-251-HW (hot water rated)
- LBH6-251-HW (hot water rated)
- LBH4-251-50 (low-UVT crossover)
- LBH5-251-50 (low-UVT crossover)
- LBH6-251-50 (low-UVT crossover)
- LBH4-251-TOC (total organic carbon reduction)
- LBH5-251-TOC (total organic carbon reduction)
- LBH6-251-TOC (total organic carbon reduction)
What the HW, -50, and TOC variants mean
All three run on the same chamber and sleeve as the standard LBH4/5/6-251, just tuned for different water conditions: "-HW" is hot-water-rated at a reduced flow, "-50" treats source water down to 50% UV transmittance instead of the standard 75% minimum, and "-TOC" adds a second UV wavelength to reduce dissolved organic carbon at a much lower flow rate. The RQ-600 sleeve is identical across all fifteen models above.
Why a genuine Luminor sleeve matters
Luminor certifies its UV systems as a complete lamp, chamber, and sleeve unit. A non-Luminor sleeve can differ in wall thickness or quartz quality, reducing UV-C output reaching the water and affecting your warranty coverage.
Complete your replacement
- Luminor RL-600HO UV Replacement Lamp, the standard lamp for this sleeve. Replace every 12 months, or after 10,000 hours. TOC models use a separate RL-600HO-TOC lamp; contact us to source one.
- Luminor RLQ-600HO UV Lamp and Sleeve Kit, which bundles the RL-600HO lamp and RQ-600 sleeve together for LBH4-251, LBH5-251, and LBH6-251.
- Replace every 24 months or as needed
- Length: 25.43" (646mm)
- Style: Domed
Helpful Info & Downloads
Q:
Does the RQ-600 fit the HW, -50, and TOC versions of my system, or just the standard LBH-251?
A:
It fits all of them. The HW, low-UVT ("-50"), and TOC variants of the LBH4/5/6-251 all use the same chamber and sleeve as the standard system; only the lamp and the system's internal dose settings change between variants.
Q:
How do I know if I need to clean the sleeve or replace it?
A:
Clean it if it's scaled or lightly stained; replace it if it's scratched, pitted, or stays cloudy after cleaning. Even with no visible damage, Luminor recommends replacing the sleeve every 24 months as routine maintenance, since UV-C transmission through quartz declines gradually with age.
Q:
Do I need to buy the lamp too, or can I just replace the sleeve?
A:
The RQ-600 is the sleeve only. If your lamp is also due, pair it with the [RL-600HO](https://espwaterproducts.com/products/luminor-rl-600-replacement-uv-lamp-rl-600ho) lamp, or save by ordering the [RLQ-600HO](https://espwaterproducts.com/products/luminor-rlq-600ho-uv-lamp-and-sleeve-kit-with-lamp-key) kit, which bundles both.
Q:
Can I use a non-Luminor sleeve instead of the RQ-600?
A:
You can, but it's not recommended. Luminor certifies its systems as a complete lamp-chamber-sleeve unit, and a non-Luminor sleeve can differ in wall thickness or quartz quality, which reduces the UV-C dose reaching the water and can affect your warranty coverage.
Q:
Why does my TOC or HW system need a different lamp but the same sleeve?
A:
The TOC and HW variants change the dose and wavelength the lamp delivers, which needs a different lamp built for that job. The sleeve's role is just to protect the lamp and let UV-C pass through to the water, so its design doesn't need to change between variants.
