oumuik OM-YJG-3/4 Brass Reducer Extension, 3/4 to 1 Inch, 2-Pack

The oumuik OM-YJG-3/4 brass reducer extension is listed as a two-piece fitting set for connecting 3/4-inch and 1-inch threaded pipework. It includes two sealing rings according to the package description, but the listing does not consistently establish thread gender or confirm the claimed NPT designation, so check compatibility before ordering.

At a glance

Brass reducing extension set listed with two fittings and two sealing rings.
The listing describes possible use in drinking-water, sprinkler and rainwater systems, as well as water taps and water-glycol mixtures.

Price

£7.99Save 20%

Reference price: ~~£9.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Two fittings and two sealing rings are stated in the package description.
Brass construction is specified for the reducer fittings.

Technical specifications

10 specifications

Identity
Brand	oumuik
Model	OM-YJG-3/4

Connection
Listed size	3/4 Zoll Außen x 1 Zoll Innen
Thread sizes	3/4 inch, 1 inch
Thread type	NPT
Connector type	Reducer

Materials and finish
Material	Brass
Colour	Gold

Pack and weight
Number of pieces	2
Weight listed	0.14 Kilograms

What to know before buying

Listing details to confirm

The listing details are inconsistent: the title describes a 3/4-inch outer by 1-inch inner connection, the feature text calls it male-to-female, and the technical details list NPT threads. Confirm the thread standard, gender and dimensions match your pipework. The description says to use sealing tape on the threads for a leak-proof connection, which is a seller claim rather than a verified result.

Who is it for?

A good fit for

Buyers adapting compatible 3/4-inch and 1-inch threaded pipe connections who need a pair of brass reducers.
Installations such as sprinkler or rainwater systems where the thread standard and stated application are confirmed as suitable.

Less suited to

Anyone who needs a confirmed BSP fitting or cannot verify that the listed NPT thread and connection gender match their existing pipework.

oumuik OM-YJG-3/4 Brass Reducer Extension, 3/4 to 1 Inch, 2-Pack · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 644 ratings

5 stars73%73%
4 stars16%16%
3 stars5%5%
2 stars2%2%
1 star4%4%

The supplied evidence contains aggregate ratings but no review-summary details, so it does not establish what customers liked or disliked. The overall rating distribution is mostly five- and four-star, with a smaller spread across lower ratings. Ratings alone cannot confirm thread fit, sealing performance or suitability for a particular installation.

Frequently asked questions

What comes in the package?

The package description lists two reducer fittings and two sealing rings.

What thread standard does it use?

The details list NPT, but the listing also uses differing size and gender descriptions. Verify the exact thread standard and connection orientation before buying.

Can it be used for drinking-water or sprinkler systems?

The listing claims suitability for drinking water and sprinkler systems, among other uses. Confirm the fitting and its materials are suitable for your specific installation.

Does the listing explain how to seal the threads?

The description recommends sealing tape on the threads. It does not establish a verified leak-proof result.