Solar non-pressure tubes

Solar non-pressure tubes

Our Solar Non‑Pressure Tubes are specially designed for gravity‑fed or thermosiphon solar water heaters. Constructed with borosilicate glass vacuum technology, they transfer solar heat to hot water systems via a circulating manifold, without pressurizing the tubes themselves.

Key Features:

• Borosilicate glass (⌀58 × 1800 mm) evacuated tubes with high thermal efficiency and hail resistance

• Non-pressure design: Tubes and manifolds handle circulation only; water remains unpressurized inside them

• Modular configurations: Available in 20, 25, 30, 50, 60‑tube collectors to match system scale

• Robust construction: Stainless steel manifold and galvanized or enamel-coated frames

Why Choose These Tubes:

• Efficient heat absorption: Self-tracking cylindrical design maximizes solar gains

• Cost-effective & low-maintenance: Ideal for large installations needing gravity flow without pressurized plumbing

• Durable material build: Long lifespan with minimal wear under sun or hail exposure

FAQs:
Q: Can these connect to pressurized tanks?
A: Yes—tube loop remains non‑pressurized; manifold links to a separate storage tank that can be pressurized.

Q: Are these suitable for cold regions?
A: Best in areas without freezing climates; non‑pressure systems are most reliable in warm to mild areas. Use freeze protection if needed.