GPH810T5L UV lamp Oman — 40W 810mm 4-pin germicidal replacement bulb

GPH810T5L UV lamp Oman

The GPH810T5L UV lamp is a 40W germicidal tube at 810mm with a 4-pin single-ended base, and UV Water Systems stocks it in Muscat for the Oman market. It is close in rating to the 843mm GPH843T5L but 33mm shorter, and the two are not interchangeable — a 843mm lamp will not seat in an 810mm chamber and an 810mm lamp in a 843mm chamber leaves the ends of the reactor undosed.

This length appears in a number of imported UV chambers fitted on commercial and light industrial lines in Oman, particularly on equipment sourced through the Far East and European supply chains rather than the North American brands. Because it is a less common length locally, it is the lamp most often unavailable when a plant needs it — which is exactly why we hold it.

GPH810T5L UV lamp Oman — technical specifications

Model / ANSI code	GPH810T5L
Power	40 W
Arc / overall length	810 mm
Base	4-pin single-ended, T5
Lamp diameter	15 mm (T5)
Type	Low-pressure mercury, hard glass
UV-C output at 100 hours	Approx. 14 W
Germicidal output	254 nm UV-C
Rated service life	9,000 operating hours (approx. 12 months continuous)
Supplied by	UV Water Systems — Uniqueness View LLC, Muscat, Oman

GPH810T5L UV lamp Oman — compatibility and cross-references

40W UV sterilizer chambers built to the 810mm lamp envelope
Imported commercial UV reactors on RO polishing and process water duty
Multi-lamp chambers using 810mm 40W tubes
Not interchangeable with GPH843T5L (843mm) or GPH436T5L

Measure the failed lamp before ordering. A 40W rating alone is not enough to confirm fit — 40W germicidal lamps exist at 810mm, 843mm and other lengths, and each needs the matching chamber.

Where the GPH810T5L UV lamp Oman is used

Typical duties in Oman are post-RO polishing on commercial reverse osmosis machines, disinfection of stored water in building tank rooms, food and beverage process water, and laboratory water loops. UV Water Systems fits and services these chambers for hospitals, industrial clients and hospitality groups across Muscat and the interior.

When to replace your GPH810T5L UV lamp Oman

UV-C output decays long before the lamp stops lighting. A germicidal lamp still glowing at 15 months may be delivering well under the dose its chamber was sized for, which means the water leaving the system is no longer being disinfected to specification. Replace on hours, not on appearance. For systems running continuously, that means once every 12 months. Log the change date on the controller or on the chamber label so the next service is scheduled rather than remembered.

Handle the quartz sleeve at the same visit. Scale and iron deposits on the sleeve block UV-C just as effectively as a weak lamp, and in Oman’s high-hardness groundwater sleeves foul faster than most manufacturers’ generic guidance assumes. Clean the sleeve with a mild acid descaler, inspect the O-rings, and replace the sleeve outright every three to five years.

Standards and references

The UV dose a chamber must deliver, and the reasoning behind the annual lamp change, come from published drinking water guidance rather than from equipment marketing. The WHO Guidelines for Drinking-water Quality set out the microbiological targets disinfection is designed to meet, and the International Ultraviolet Association publishes the dose and validation practice the industry works to. We size and service UV systems in Oman against those references.

Buying GPH810T5L UV lamp Oman in Oman

UV Water Systems has supplied and serviced ultraviolet disinfection equipment across the Sultanate for more than 14 years, for hospitals, oil and gas sites, schools, hotels, food and beverage plants and villas. We stock germicidal lamps and ballasts in Muscat rather than ordering them in after a failure, so a plant that loses disinfection on a Sunday morning is not waiting three weeks for an air freight shipment.

Every lamp we supply is a named-manufacturer part with traceable 254 nm output data — the documentation health authority and HACCP auditors in Oman ask for. Our technicians cover Muscat, Sohar, Nizwa, Salalah and Duqm, and can carry out the lamp change, sleeve clean and UV intensity check as one visit under an annual maintenance contract.

Uniqueness View LLC is ISO 9001:2015 certified. Call +968 9763 7786 or email sales@waterfilteroman.com for stock availability, bulk pricing on service-contract quantities, or help identifying the correct lamp for a chamber you cannot find a part number on. Send us a photo of the old lamp and the chamber label and we will identify it for you.

GPH810T5L

GPH810T5L 40W UV Lamp 810mm 4-Pin – Germicidal Replacement Bulb | UV Water Systems Oman