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header-product TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer
6.99 €

TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer

TDM Brass 1 1/4" x 3/4" Inner Sleeve Reducer Photo 1
TDM Brass 1 1/4" x 3/4" Inner Sleeve Reducer Photo 2
TDM Brass 1 1/4" x 3/4" Inner Sleeve Reducer Photo 1
TDM Brass 1 1/4" x 3/4" Inner Sleeve Reducer Photo 2
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TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer

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TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer

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Short description

The TDM Brass inner sleeve is a high-quality threaded reducer designed for plumbing and heating systems. Featuring 1 1/4" and 3/4" internal threads, this fitting allows for a secure and reliable connection between pipes of different diameters. Constructed from durable brass, it provides excellent corrosion resistance and long-term performance for various fluid transport applications in residential or industrial piping networks.
Available for order: 50 pcs.
Warranty: 2 Years
SKU: 12584032
Manufacturer: tdm_brass
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
Friday {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
11.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.12 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
11.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
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Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

The TDM Brass inner sleeve 1 1/4" x 3/4" is a professional-grade threaded reducer engineered for seamless integration into plumbing and heating systems. This fitting facilitates a secure transition between piping components of different diameters, ensuring a reliable and leak-proof connection. Manufactured from high-quality brass, the component offers superior durability and resistance to corrosion, making it an ideal choice for both residential and industrial fluid transport networks.

Advantages

The primary benefit of this brass reducer is its robust construction, which ensures long-term structural integrity even under varying pressure and temperature conditions. Its precise threading allows for easy installation and a tight seal, minimizing the risk of leaks in complex piping configurations. Furthermore, the brass material provides excellent thermal stability and resistance to environmental degradation, contributing to the overall longevity and efficiency of the plumbing system.

Suitable for

  • Connecting pipes of different diameters in heating systems
  • Water supply installations in residential buildings
  • Industrial fluid transport networks
  • Adapting threaded connections in plumbing manifolds

This fitting may not be suitable for high-pressure steam applications or systems involving highly aggressive chemical substances that could compromise the integrity of the brass material. It is also not intended for use in environments where the pipe diameter requirements exceed the specified 1 1/4 inch or 3/4 inch thread dimensions.

Key specifications

  • Material: Brass
  • Connection type: Internal thread to internal thread
  • Size: 1 1/4 inch x 3/4 inch
  • Application: Plumbing and heating systems

To install the TDM Brass inner sleeve, ensure that the pipe ends are clean and free of debris. Apply an appropriate thread sealant, such as PTFE tape or a liquid pipe sealant, to the male threads of the connecting pipes. Carefully screw the reducer onto the pipes, tightening it with a suitable wrench until a secure fit is achieved. Avoid overtightening, as this may damage the threads or the fitting itself.

What to consider before purchase

  • Verify the thread sizes of your existing piping system
  • Ensure compatibility with the fluid type being transported
  • Check if additional sealing materials are required for your specific installation
For optimal performance, it is recommended to inspect the connection periodically for signs of moisture or leaks, especially after initial installation. Always ensure that the piping is properly supported to prevent excessive mechanical stress on the fitting.

Description

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Product comparison

This overview compares the brass reducing fitting TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer with other piping components from the same brand: the threaded extension TDM Brass 105M34120 Threaded Extension M/M 3/4" x 120 mm, the three-way hose connector TDM Brass 490T 3/8 Inch Three-Way Hose Connector, the reducing tee TDM Brass ART 1060 Reducing Tee 1 inch x 26 mm x 3.0 mm, the demountable threaded tee TDM Brass 1455E Demountable Threaded Tee 20mm x 1/2 inch, and the straight fitting Threaded brass fitting ART 483 1 inch male-to-male TDM Brass. All items are made of durable brass and engineered for plumbing or heating systems, yet they serve entirely different installation purposes: transitioning between thread diameters, extending pipe sections, branching fluid lines, or connecting different pipe types.

⚙️ Comparison of technical characteristics, connection types, and practical applications of the presented fittings in piping systems.

Comparison parameterTDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread ReducerTDM Brass 105M34120 Threaded ExtensionTDM Brass 490T Three-Way Hose ConnectorTDM Brass ART 1060 Reducing TeeTDM Brass 1455E Demountable TeeTDM Brass ART 483 FittingPractical conclusion
Type and purposeInternal threaded reducing sleeveThreaded extension pieceThree-way hose connectorReducing tee fittingDemountable threaded teeStraight male-to-male fittingEach product addresses a specific installation task in piping layouts
MaterialBrassBrassBrassBrassBrassBrassAll options ensure high corrosion resistance and long-term durability
Connection typeInternal threads 1 1/4" and 3/4"Male threads 3/4" on both endsHose barb 3/8"Threaded and compression ports 1" and 26 mmPipe connection 20 mm and thread 1/2"Male threads 1" on both endsThe mounting method must match the specific pipes and valves used on site

◎ Evaluation of use cases and suitable matching fittings for various installation requirements in residential and industrial piping networks.

Use caseRecommended productWhy
Transitioning between pipes of different diameters with internal threadsTDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread ReducerSuited for securely joining threaded pipe sections of different sizes in heating and water supply systems.
Extending reach or offsetting an existing threaded connectionTDM Brass 105M34120 Threaded Extension M/M 3/4" x 120 mmAllows installers to bypass obstacles and position pipeline segments at the required length.
Branching flexible hose linesTDM Brass 490T 3/8 Inch Three-Way Hose ConnectorEnsures a secure and leak-proof fluid distribution across three directions for 3/8-inch hoses.
Branching a rigid network with a size transitionTDM Brass ART 1060 Reducing Tee 1 inch x 26 mm x 3.0 mmUsed for creating robust tee joints in combined water supply and heating installations.
Serviceable connections requiring easy disassemblyTDM Brass 1455E Demountable Threaded Tee 20mm x 1/2 inchAllows for straightforward maintenance and adjustments thanks to its demountable design.
Direct connection of two male-threaded sectionsThreaded brass fitting ART 483 1 inch male-to-male TDM BrassActs as a sturdy connecting link for components featuring matching inch threads.
Recommendation: The TDM Brass Inner Sleeve 1 1/4" x 3/4" Internal Thread Reducer is essential when piping systems require joining internal threads of different diameters. Selection of this reducer is driven entirely by specific thread sizing requirements, whereas other components in the lineup should be chosen based on distinct installation tasks such as extending, branching, or hose attachment.
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Customer reviews

Customer questions

FAQ

How much does the TDM Brass 1 1/4" x 3/4" Inner Sleeve Reducer cost, and is it available for purchase?

The price is 6.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on Friday at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All tdm_brass products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized tdm_brass service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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