Enamel Tank for Heat Pump System

Engineered for thermal resilience, corrosion resistance, and decades-long stability in demanding renewable energy installations.

Product Overview

Designed exclusively for heat pump systems, our enamel-coated stainless steel water tanks deliver unmatched durability in high-temperature, high-humidity, and chemically aggressive environments. Unlike standard storage tanks, this unit features a fused vitreous enamel lining applied at >850°C — creating a non-porous, inert barrier that eliminates rust, scale buildup, and microbial adhesion over time.

Ideal for OEM integrators, system engineers, and renewable energy contractors seeking long-term reliability without maintenance overhead, this tank extends service life beyond 25 years while maintaining thermal efficiency and pressure integrity across seasonal load cycles.

Core Advantages

Corrosion-Proof Enamel Lining

Vitreous enamel fused to 304/316 stainless steel substrate resists chloride ions, acidic condensate, and glycol-based heat transfer fluids — eliminating pitting and electrolytic degradation.

Thermal Stability & Fatigue Resistance

Withstands repeated thermal cycling from 5°C to 95°C (±200,000 cycles) without enamel cracking or delamination — validated per EN 1487 and ISO 27307.

System Integration Optimized

Pre-configured flange ports, insulation-ready shell geometry, and standardized mounting interfaces simplify integration with air-to-water and ground-source heat pumps — reducing engineering time by up to 35%.

Target Applications

Residential Heat Pump Systems

Integrated into domestic hot water (DHW) and space heating loops for single-family homes and multi-unit dwellings.

Commercial District Heating Networks

Serves as buffer and stratification tank in decentralized heat networks serving offices, schools, and municipal buildings.

Renewable Hybrid Installations

Paired with solar thermal collectors and backup boilers in low-carbon retrofit projects across EU and North America.

Technical Specifications ► 技术规格
Parameter Value
Tank Material 304 or 316 stainless steel (EN 10088-1)
Enamel Coating Double-layer vitreous enamel (inner/outer), ≥0.3mm thickness
Operating Temperature Range 5°C – 95°C (continuous)
Max Working Pressure Pending
Standard Capacities Pending
Certifications EN 1487 (thermal shock), ISO 27307 (fatigue), CE marked
FAQ 

Why is enamel superior to epoxy or stainless-only tanks for heat pumps?

Epoxy coatings degrade above 70°C and are vulnerable to UV and mechanical abrasion. Stainless-only tanks suffer from localized corrosion where weld seams or scratches expose base metal. Enamel provides full-surface, glass-like inertness — stable across the entire operational range of modern heat pumps.

Can the tank be insulated on-site?

Yes — the smooth, non-porous enamel surface ensures optimal adhesion for mineral wool, polyurethane, or vacuum insulation panels. Flange ports are recessed to avoid thermal bridging when fully wrapped.

Is custom port configuration available?

Yes — we support OEM port positioning, thread types (G½”, NPT, BSPP), and sensor integration (thermistor, pressure tap) per project drawings.

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