Alfa Laval CB30-50H brazed plate heat exchanger, G 1 1/4", 50 plates, PN 30
- Application: primary/secondary loop separation — district heating, DHW, process
- Heat capacity: ~55-121 kW (depending on flow rate and ΔT)
- Nominal pressure: PN 30 (30 bar)
- Connection: G 1 1/4" external thread (both sides)
Where CB30-50H is used
This 50-plate brazed heat exchanger with a "H" (High theta) profile — high chevron angle — better heat transfer, higher Δp. The CB30 series comprises compact, hermetic units that reliably separate primary and secondary loops in multi-family and small commercial heating systems. The brazed gasket-free construction requires no periodic maintenance that gasketed exchangers would need — this reduces operating costs across the equipment lifecycle.
Technical specifications
| Parameter | Value |
|---|---|
| Code | 3287084064 |
| Series | Alfa Laval CB30 |
| Model | CB30-50H |
| Number of plates | 50 |
| Chevron profile | H (High theta) |
| Nominal pressure (PN) | 30 bar |
| Max. temperature | 225 °C |
| Connection | G 1 1/4" external thread (S1-S4) |
| Plate material | Stainless steel |
| Brazing filler | Copper |
| Approx. dimensions (L × W × H) | 128 × 111 × 526 mm |
| Weight | ~8.3 kg |
| Construction | Brazed, hermetic (gasket-free) |
| Media | Water, glycol solutions, other media compatible with stainless steel and copper |
Heat transfer capacity — quick calculation
Capacity depends on flow rate, ΔT and logarithmic mean temperature difference (LMTD). General formula: P = Q × ΔT × 1.163 (kW, Q m³/h, ΔT °C).
Example for heating mode (primary 90/70 °C → secondary 65/40 °C): at Q = 3 m³/h and effective ΔT ≈ 20 °C → P ≈ 70 kW. With Q = 5 m³/h and ΔT ≈ 25 °C → P ≈ 145 kW.
When to choose CB30-50H
- Systems with capacity demand ~55-121 kW (depending on temperature program)
- Primary/secondary loop separation in multi-family and small commercial heating systems
- Domestic hot water (DHW) heat exchanger
- Cooling system buffer separation (primary chilled water / secondary building loop)
- When a compact solution without gasket maintenance is required
B2B delivery and logistics via Amegata.lt
- 24-hour delivery across Lithuania (from our warehouse in Vilnius)
- Delivery across the EU on request
- Competitive B2B pricing — often below market average
- 30-day payment terms for companies (per contract)
- Free technical consultation for sizing selection
Official Alfa Laval catalogue: alfalaval.com/CB30
Frequently asked questions
What does "H" mean in CB30-50H?
"H" (High theta) — higher chevron angle, higher heat transfer coefficient and higher pressure drop. Best for higher temperature regimes with lower flow rates.
Can glycol mixtures be used?
Yes. CB30 series exchangers are compatible with ethylene glycol and propylene glycol solutions up to 50 %, when appropriate inhibitors are used. For DHW — only potable-grade fluids allowed.
What maintenance is required?
Brazed gasket-free construction requires no periodic disassembly maintenance. Recommended only CIP (Clean-in-Place) flushing every 3-5 years if fouling signs appear (rising pressure drop or falling heat transfer).
Is it suitable for potable water?
Yes. Stainless steel plates and copper brazing meet potable water system requirements (WRAS, DVGW and similar certifications, depending on country).
Is it suitable for regions with aggressive water?
In some regions, district heating water contains elevated chlorides or ammonia — in such systems, copper brazing may shorten the exchanger's service life. In these cases we recommend the Alfa Laval AlfaNova series (stainless steel brazing, copper-free). For hard water with elevated Ca/Mg carbonate content, limescale gradually builds up on the plates and reduces heat-transfer efficiency; for such systems gasketed (plate-and-frame) exchangers are preferable, as they can be periodically opened for mechanical or CIP cleaning. Contact us — we will select the model best suited to your water conditions.
How to choose the right plate count?
Plate count is determined by required capacity, flow rates and allowable pressure drop. The same CB30 series with different plate counts covers different capacity classes — from small user branches to large primary loops. Contact us — we will provide a specific selection based on your project data.
