# Inspection Tee 87° Vaillant – DWZ model 303316

**URL:** https://aio.lv/en/product--vaillant-303316--12059497
**Data updated:** 2026-03-12 19:43 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Vaillant
**Manufacturer code:** 303316
**EAN:** 4024074461587
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 17.35 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--vaillant-303316--12059497

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Inspection tee (revison tee) 87° by Vaillant, model DWZ 303316. Designed as an access fitting for plumbing or heating systems, it provides a 87-degree branch for inspection and maintenance. Suitable for joining and accessing pipelines, enabling cleaning, inspection or installation of sensors and valves without major disassembly. Compatible with standard Vaillant system components; check dimensions and connection type before installation.

## Long description

Inspection tee 87° Vaillant – DWZ model 303316 is an access fitting designed for plumbing and heating systems where a compact, angled branch is required for inspection, cleaning or installation of sensors and valves. The fitting provides a 87-degree outlet that facilitates access into a pipeline without major disassembly and is intended for use with compatible Vaillant system components. Before installation, verify the connection type and dimensions to ensure correct fit and sealing.
Advantages
The inspection tee offers a space-saving angled branch that simplifies access to the pipe interior for maintenance and inspection. Its design reduces the need to dismantle long sections of piping when installing measuring devices or servicing system components. The fitting is suitable for integration into standard Vaillant installations and supports reliable access while maintaining flow characteristics appropriate for heating and plumbing circuits.
Suitable for
 Creating an access point for inspection and cleaning in heating distribution and plumbing lines
 Installing sensors, temperature probes or small valves without removing long pipe sections
 Service and maintenance tasks where an angled branch facilitates tool or probe insertion
 Retrofit situations in Vaillant-compatible systems requiring an inspection opening
Key specifications
 Angled branch: 87° outlet for compact access to pipe interior
 Function: access/revision fitting for inspection, cleaning and installation of small components
 Compatibility: designed for use with Vaillant system components (confirm matching connections and dimensions before fitting)
 Typical application area: heating and potable water distribution circuits
How to use
Install the inspection tee in a prepared section of the pipeline where access is required, ensuring the connection type and dimensions match the existing system. Follow standard pipe preparation and sealing procedures applicable to the material and connection type in use. Position the 87° outlet to allow convenient access for probes, sensors or cleaning tools. After installation, perform leak and pressure tests according to local codes and system manufacturer instructions.
Usage recommendations
Verify compatibility with the existing Vaillant system components and select the installation location to provide safe, ergonomic access for inspection and servicing. Use appropriate seals and tightening torques for the connection type and follow local regulations for heating and plumbing installations.

## FAQ

### How much does the Inspection Tee 87° Vaillant DWZ 303316 cost, and is it available for purchase?

The price is 20.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 07.07.2026 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 Vaillant 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 Vaillant 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12059497/67545130_large.webp