# 4-way stainless steel manifold with flowmeters, thermostatic valves, drain valves and automatic air vents – SiGMA-Li

**URL:** https://aio.lv/en/product--sigma-li-rsztpx-4--11829232
**Data updated:** 2026-03-09 14:38 (EET)
**Category:** Underfloor Heating
**Manufacturer:** SiGMA-Li
**Manufacturer code:** RSZTPX-4
**EAN:** 5902837607856
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 99.99 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 82.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigma-li-rsztpx-4--11829232

## 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 4-way hydraulic manifold by SiGMA-Li designed for distribution and balancing of heating or cooling circuits. Equipped with individual flowmeters, thermostatic control valves, drain/fill valves and automatic air vents for easy commissioning and maintenance. Suitable for underfloor heating, radiators or multi-zone hydronic systems where precise flow regulation and reliable venting are required.

## Long description

Stainless steel 4-way hydraulic manifold SiGMA-Li designed for distribution and balancing of heating or cooling circuits. This manifold integrates individual flowmeters, thermostatic control valves, drain/fill valves and automatic air vents to simplify commissioning, adjustment and routine maintenance. Constructed from corrosion-resistant stainless steel, the unit is intended for use in hydronic systems such as underfloor heating, radiator circuits and multi-zone installations where accurate flow regulation and reliable air removal are required.
Advantages
The manifold provides precise balancing with separate flowmeters for each circuit, enabling visual verification and fine adjustment of flow rates. Thermostatic control valves allow temperature-responsive regulation and contribute to energy-efficient operation. Built-in drain and fill valves facilitate fast installation and servicing without the need to dismantle the assembly. Automatic air vents ensure continuous removal of trapped air, improving system performance and reducing noise.
Suitable for
Underfloor heating systems requiring individual loop balancing
Multi-zone hydronic installations with separate control circuits
Radiator distribution systems where flow measurement and balancing are needed
Retrofit and new-build projects that demand easy commissioning and low-maintenance operation
Key specifications
Material: corrosion-resistant stainless steel construction
Number of outlets: 4 independent circuits with individual flowmeters
Valves: thermostatic control valves on each circuit for temperature-responsive regulation
Maintenance features: integrated drain/fill valves for each circuit
Air management: automatic air vents to remove trapped air from the system
Connection compatibility: suitable for common hydronic pipework and fittings (verify dimensions with installer)
How to use
Install the manifold in the hydraulic circuit according to project layout and local plumbing standards. Connect supply and return pipes and attach each circuit to its respective outlet. During commissioning, use the individual flowmeters to measure and adjust flow rates for balanced distribution. Use the thermostatic control valves to regulate temperature delivery per circuit. Open the drain/fill valves for safe filling and purging of each loop; operate the automatic air vents to remove trapped air during initial filling and periodic maintenance.
Usage recommendations
For reliable long-term performance, protect the system from aggressive fluids and ensure water quality and inhibitor levels meet manufacturer or project requirements. Commission the manifold with a calibrated flow measurement procedure, bleed air thoroughly using the automatic vents, and schedule periodic inspection of flowmeters and valves to confirm correct operation.

## FAQ

### How much does the 4-way stainless steel manifold SiGMA-Li cost, and is it available for purchase?

The price is 99.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 4-way stainless steel manifold SiGMA-Li 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/11829232/67230083_large.webp