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This highly efficient two-stage water-cooled piston condensing unit ensures maximum output and acquires less space to meet the latest standards.
Product Description
As a leading solution for large-scale refrigeration, this Two Stage Water Cooled Piston Condensing Unit—part of our advanced Water Cooled Condensing Units portfolio—delivers high cooling efficiency while occupying minimal space. Designed for demanding industrial applications, it is ideal for cold storage warehouses, food processing plants, frozen logistics, pharmaceutical cold chain systems, and large-scale freezer rooms.
This unit features Bitzer’s two-stage semi-hermetic compressor, ensuring exceptional reliability, durability, and stable performance under extreme low-temperature conditions. Engineered with precision and imported high-quality components, it meets stringent OEM standards and global industrial refrigeration requirements.
Equipped with Bitzer two-stage semi-hermetic compressor for maximum cooling performance
High-quality imported components ensure long-term reliable operation
Optimized water-cooled condenser enhances energy efficiency and increases cooling capacity
Low evaporation temperatures: -50℃ for R22 refrigerant, -65℃ for R404A
Compact design saves space while delivering high output
Power supply: 380V/3P/50Hz
Operating temperature range: -40℃ to -25℃
Two-stage compressor
Crankcase heater
Damping pipe
Oil separator
Air-and-water cooling condenser
Reservoir (non-water-based cooling)
Filter and sight glass
Magnetic valve and subcooler
Air and liquid separator
Pressure controller
Oil pressure regulator and controller
Multi-point temperature gauges (low, medium, high)
Junction box
This configuration ensures optimized performance for cold storage rooms, quick-freezing facilities, industrial refrigeration systems, and commercial frozen food storage, offering stable operation and easy maintenance.
Our Two Stage Water Cooled Piston Condensing Unit is widely used in:
Large cold storage warehouses (-40~-25℃)
Frozen food processing plants
Quick freezing and blast freezing systems
Pharmaceutical and medical cold chain storage
Industrial refrigeration projects
Food logistics and distribution cold rooms
Modular freezer rooms for supermarkets and logistics hubs
Manufactured with precision-engineered imported parts for superior reliability
Tested under strict OEM-quality standards to guarantee consistent performance
Optimized design for energy efficiency, compact footprint, and low operational costs
Compatible with R22 and R404A refrigerants, ensuring flexibility for different applications
Optimize your cold storage and industrial refrigeration systems with our Two Stage Water Cooled Piston Condensing Unit. Contact our engineering team for technical consultation, customized solutions, and competitive quotation.
Product Features
| Type | SJZBS | |||||||||
| 05JB | 08JB | 12JB | 16JB | 20JB | 25J | 30JB | ||||
| Compressor type | S4T-5.2 | S4N-8.2 | S4G-12.2 | S6J-16.2 | S6H-20.2 | S6G-25.2 | S6F-30.2 | |||
| Cooling capacity and power | Evaporation --35℃ | Cooling capacity(KW) | 5.1 | 7.38 | 11.15 | 16.49 | 19.12 | 21.9 | 26.3 | |
| Power(KW) | 3.55 | 5.3 | 8 | 11.35 | 13.2 | 15.1 | 18.1 | |||
| Evaporation -40℃ | Cooling capacity(KW) | 4.01 | 5.81 | 8.78 | 13.09 | 15.17 | 17.42 | 20.8 | ||
| Power(KW) | 3.23 | 4.81 | 7.26 | 10.1 | 11.67 | 13.4 | 16 | |||
| Evaporation -45℃ | Cooling capacity(KW) | 3.08 | 4.44 | 6.7 | 10 | 11.6 | 13.31 | 15.93 | ||
| Power(KW) | 2.88 | 4.33 | 6.54 | 8.8 | 10.2 | 11.7 | 14 | |||
| Storage temperature( ℃) | -40~-25℃ | |||||||||
| Refrigerant | R22 | |||||||||
| Power supply | 380V/3P/50Hz | |||||||||
| Condenser | Quantity of fan | High efficient pipe-shell style | ||||||||
| Voltage of fan (V) | 2 | 3 | 4 | 5.6 | 6.6 | 7.5 | 10 | |||
| Power of fan (W) | 1-1/4″ | 1-1/2″ | 1-1/2″ | 2″ | 2″ | 2″ | 2- 1/2″ | |||
| Port | inhale port/(mm) | φ28 | φ28 | φ35 | φ42 | φ42 | φ42 | φ42 | ||
| Liquid supply port(mm) | φ22 | φ22 | φ28 | φ28 | φ28 | φ28 | φ28 | |||
| Boundary dimensions | A (mm) | 900 | 1050 | 1260 | 1300 | 1300 | 1300 | 1300 | ||
| B (mm) | 650 | 650 | 720 | 720 | 720 | 720 | 720 | |||
| C (mm) | 795 | 855 | 950 | 990 | 990 | 990 | 990 | |||
| Installation dimension (a×b)(mm) | 500×605 | 650×605 | 800×675 | 880×675 | 880×675 | 880×675 | 880×675 | |||
Note: 1) Cooling water inlet temperature 30℃, outlet 30℃; overheat 10℃; 2) Parameter of R404A is TBD;
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Kendall offers a vast choice of cold rooms, refrigeration equipment and accessories. Whatever your application, whatever your budget, and whatever size and shape for your needs.
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