# Perfexim left-hand thermostat valve set PHA-037CM with adjustable pre-set, matte black

**URL:** https://aio.lv/en/product--perfexim-20-037-0000-003--11699743
**Data updated:** 2026-03-08 08:45 (EET)
**Category:** Heating Radiators
**Manufacturer:** Perfexim
**Manufacturer code:** 20-037-0000-003
**EAN:** 5901880122651
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Perfexim PHA-037CM is a left-hand thermostatic radiator valve set in matte black finish. The set includes a thermostat valve with adjustable pre-set function for flow limitation and temperature control on heating radiators. It is designed for installation on left-side connections to regulate room temperature and balance radiator heat output in residential and commercial heating systems.

## Long description

Perfexim left-hand thermostat valve set PHA-037CM with adjustable pre-set, matte black is a thermostatic radiator valve designed for left-side installations. The set includes a thermostatic valve with an adjustable pre-set feature that limits flow to balance heat output and maintain stable room temperature on heating radiators in residential and commercial systems. The matte black finish provides a discreet, contemporary look compatible with modern interior schemes.
Advantages
The adjustable pre-set function enables precise flow limitation to prevent overheating and allow individual radiator balancing without additional tools. The left-hand orientation suits radiators with inlet connections on the left side, simplifying installation and ensuring correct valve orientation. A thermostatic control integrates automatic temperature regulation by responding to room temperature changes, reducing manual intervention. The matte black surface offers corrosion-resistant coating and a uniform aesthetic that coordinates with black plumbing and hardware.
Suitable for
Balancing heat output on single or multiple radiators in homes and apartments
Left-side radiator inlet connections where a left-hand valve orientation is required
Retrofitting or replacing existing radiator valves to add thermostatic control
Commercial spaces with discrete matte-black fittings for consistent interior design
Key specifications
Valve orientation: left-hand (for left-side radiator connections)
Control type: thermostatic valve with adjustable pre-set for flow limitation
Finish: matte black surface treatment
Application: heating radiators in residential and commercial systems
Function: automatic temperature regulation and radiator balancing
How to use
Install the valve set on the radiator inlet with the connection on the left side, following standard plumbing practices and ensuring the system is depressurized before work begins. Set the adjustable pre-set to limit maximum flow as required for balancing individual radiators, then attach and adjust the thermostatic head to the desired room temperature. After installation, purge air from the radiator and check for leaks. The thermostatic element will modulate flow automatically according to room temperature, maintaining set comfort levels without continuous manual adjustments.
Usage recommendations
For effective radiator balancing, set pre-sets progressively across the system starting from the farthest radiator and adjust while the heating is operating. Periodically check for scale or debris in older systems and flush the circuit if necessary to maintain smooth valve operation. Use compatible fittings and follow local plumbing codes for installation.

## FAQ

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### 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 Perfexim 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 Perfexim 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

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