This Calmag H/V Controls HVLS Leak Sealer connects internal plumbing and heating pipework by efficiently and safely protecting fluid volumes throughout your system. Specifically, it provides a highly durable and precise sealing of minor leaks and weeping joints for indirect central heating networks. Furthermore, thanks to its exceptional formula and readily dispersible nature, you significantly speed up maintenance by ensuring excellent long-term stress resistance directly on site.
Therefore, this 1 Litre Leak Sealer works perfectly for underfloor heating loops, radiators, pipework, and various joint setups for domestic applications. Additionally, it easily handles demanding restoration applications, smoothly operating alongside existing system inhibitors and withstanding everyday operational demands to maintain maximum heating efficiency.
The HVLS Central Heating Leak Sealer features a robust formulation engineered by Calmag Yorkshire Ltd under strict manufacturing quality controls. Moreover, it incorporates a non-toxic and non-irritant chemical barrier, securely bonding to target weeping areas without causing any blockages within the system. As a result, this reliable build, compliant with modern treatment standards, makes it virtually impervious to ongoing leaks and guarantees an extended lifespan for low-temperature and high-temperature radiant setups alike.
Key Features & Benefits of Calmag H&V Controls HVLS Leak Sealer Heating Systems 1L:
Internal Leak Sealing: The formulation is perfectly optimized for targeting minor leaks, pinholes, and weeping joints. Importantly, it forms a soft seal within 1 to 24 hours of entering the network, protecting your system from ongoing fluid loss.
Blockage-Free Performance: The chemical solution is designed to be completely and readily dispersible within the circulating water. Consequently, you achieve fast, flexible leak remediation without any risk of causing internal blockages or clogging control valves.
Multi-Metal Compatibility: The product effortlessly supports all standard installation materials including sensitive metals. Besides that, the system exhibits excellent stability, remaining fully compatible with aluminium components and approved treatment inhibitors.
Enhanced System Efficiency: Sealing weeping joints prevents pressure drops and the need for frequent freshwater top-ups. Ultimately, this effectively minimizes physical stress across the heating network, successfully lowering fuel bills and extending system life.
Straightforward 1% Dos ing: The liquid treatment relies on a simple and highly efficient dosing procedure. For example, this allows for highly efficient and even distribution across a typical domestic system of up to 10 radiators with a single 1-litre bottle, guaranteeing maximum convenience.
Technical Specifications:
- Product Type: Central Heating Leak Sealer
- Volume: 1 Litre
- Manufacturer: Calmag Yorkshire Ltd (Stock Code: HVLS)
- EAN: 5055995563448
- Seal Formation Time: 1 to 24 Hours
- Application Capacity: 1 Litre treats up to 10 radiators
- Safety Profile: Non-toxic and Non-irritant
- Compatibility: All metals (including aluminium), other Calmag H&V products, and approved treatments
- Application: Indirect central heating systems, underfloor heating networks, radiators, and pipework






