# 3-way stainless steel manifold with flow meters, thermostatic valves and automatic air vents – SiGMA-Li RSZTPX-3

**URL:** https://aio.lv/en/product--sigma-li-rsztpx-3--11829224
**Data updated:** 2026-03-09 14:38 (EET)
**Category:** Underfloor Heating
**Manufacturer:** SiGMA-Li
**Manufacturer code:** RSZTPX-3
**EAN:** 5902837607849
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 80.49 €
**Prices and availability valid until:** 2026-07-27 23:59
**Price without VAT (21%):** 66.52 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-rsztpx-3--11829224

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Stainless steel 3-way manifold by SiGMA-Li (model RSZTPX-3) designed for hydraulic distribution in heating or cooling systems. Equipped with flow meters for balancing, thermostatic valves for temperature control, drain valves for maintenance and automatic air vents for degassing. Suited for underfloor heating, radiator circuits or small hydronic installations requiring precise flow control and easy servicing.

## Long description

SiGMA-Li RSZTPX-3 is a stainless steel 3-way manifold engineered for hydraulic distribution in heating and cooling installations. The unit integrates flow meters for circuit balancing, thermostatic valves for temperature regulation, drain valves for maintenance, and automatic air vents for rapid degassing. Constructed from corrosion-resistant stainless steel, the manifold is intended for durable performance in underfloor heating, radiator circuits and small hydronic systems where precise flow control and straightforward servicing are required.
Advantages
The manifold combines calibrated flow meters and thermostatic control valves to enable accurate balancing and individual temperature adjustment of each circuit. Stainless steel construction provides improved corrosion resistance and mechanical strength compared with many brass alternatives. Built-in drain valves simplify maintenance and winterization, while automatic air vents reduce trapped air that can impair circulation and heat transfer. Compact layout and standardized connections support straightforward installation and integration into common hydronic layouts.
Suitable for
Underfloor heating systems with multiple zones
Small radiator circuits and low-temperature heating loops
Cooling distribution in light commercial or residential hydronic setups
Retrofit projects requiring accurate circuit balancing and easy servicing
Key specifications
Material: stainless steel body for corrosion resistance and durability
Configuration: 3-way manifold with three separate outlets for distribution
Flow control: integrated transparent flow meters for visual balancing and flow measurement
Temperature control: thermostatic valves on each circuit for individual regulation
Service features: drain valves for each circuit to enable flushing and maintenance
Air management: automatic air vents to remove trapped air and maintain hydraulic performance
Connections: standardized hydraulic fittings for common piping systems
How to use
Install the manifold in the system feed or return according to hydraulic design and local plumbing codes, ensuring proper orientation and secure connections. Use the flow meters to balance each circuit by adjusting the integrated valves until the desired flow rate is visible on the transparent indicators. Set the thermostatic valves to the required temperature levels for each zone. Open the drain valves when flushing or performing maintenance, and allow automatic air vents to purge trapped air during initial filling and commissioning.
Usage recommendations
For reliable operation, flush the system before installation to remove debris that can obstruct flow meters and valves. Commission each circuit after filling to confirm correct flow rates and verify that automatic air vents are expelling air. Follow local regulations for installation and, if necessary, use compatible fittings and isolation valves to allow future servicing without system drain-down.

## FAQ

### How much does the 3-way stainless steel manifold SiGMA-Li RSZTPX-3 cost, and is it available for purchase?

The price is 80.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 15.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can 3-way stainless steel manifold SiGMA-Li RSZTPX-3 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 SiGMA-Li 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 SiGMA-Li 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/11829224/67230079_large.webp