BTF4VCS-6.3Z~BTF4NCS-20.3G is a medium-capacity four-cylinder T-Series piston refrigeration compressor designed for industrial cooling systems, offering stable performance, high efficiency, and reliable continuous operation.
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BTF4VCS-6.3Z~BTF4NCS-20.3G
Blait
M4 PISTON COMPRESSOR
· Product Model:BTF4VCS-6.3Z~BTF4NCS-20.3G
· Displacement:34.73m3/h~56.35m3/h
· Refrigerating Fluid:Applicable to R22, R404A, R507A and other refrigerants
· Application Fields:Commercial refrigeration, small cold storage units, pharmaceutical cold chain and other refrigeration fields.
KRIWAN
Electronic Oil Pressure Differential Switch
KRIWAN
Motor Protection Modules
Temperature Sensor
Capacity Control
The four-cylinder models have 50% and 100% two stages loading adjustable
The six-cylinder models have 34%, 67% and 100% three stages loading
adjustable
Cylinder Head Fan
Physical cooling
1. Stable operation across a wide temperature range, effortlessly handling extreme conditions
The compressor operates stably under extreme conditions with evaporation temperatures as low as -50°C and condensation temperatures as high as 50°C. It supports a variety of refrigerants, including R22, R404A, and R134a, making it suitable for a wide range of industrial refrigeration applications from medium-low to high temperatures. The valve plate features a heat-resistant coating and is equipped with a dedicated oil cooling circuit, effectively preventing overheating in high-temperature environments.
2. Low vibration and low noise, enhancing installation and user experience
Dynamic balancing technology reduces vibration to <3.5 mm/s, significantly reducing stress on piping and installation structures. Noise levels are only 72 dB(A) at a distance of 1 meter, compliant with ISO 3744 standards, making it suitable for noise-sensitive industrial environments.
3. Flexible capacity adjustment for precise matching of load requirements
Optional stepless capacity adjustment from 25% to 100% allows for flexible output adjustment based on real-time cooling needs, effectively reducing energy waste.
4. Dual-Voltage Compatibility, Adapting to Global Industrial Power Standards
Supports dual power supply configurations of 380V–420V (3-phase/50 Hz) and 440V–480V (3-phase/60 Hz), meeting industrial power standards in various countries and regions to facilitate the implementation of international projects.
5. Precision Manufacturing, Reliable Quality
Utilizing automated assembly lines with machining precision of ±0.005mm, ensuring precise alignment of core components and operational efficiency.
6. Rigorous Testing, Guaranteed Long Service Life
Having undergone 2,000 hours of accelerated endurance testing and material wear analysis, the Mean Time Between Failures (MTBF) reaches up to 20,000 hours, meeting the demands of continuous industrial operation.
7. Global Service Network, Prompt Response
With partners in over 60 countries, we provide timely delivery and on-site service to support after-sales support for international customers.
8. Flexible Customization, Meeting Project-Specific Needs
Optional oil separation systems and differential pressure protection are available, along with OEM solutions, to accommodate the unique requirements of different projects.
Compressor type | BTF4VCS-6.3Z~BTF4NCS-20.3G |
Nominal motor power (HP/kW) | 6/4.4~20/15 |
Displacement (50Hz) m3/h | 34.73~56.25 |
Number of Cylinder x Diameter x Stroke (mm) | 4×φ55×42~4×φ70×42 |
Oil injection volume (L) | 2.6 |
Power supply (V / Φ / Hz) | 380 ~ 420YY /3/50 440 ~ 480YY /3/60 |
Max operating current (A) | 16.6~33.2 |
Starting current / rotorlocked current operating current (A) | 39.0/68.0~97.0/158.0 |
Crankcase Heater (220V) (W) | 120 |
Oil supply method | Centrifugal lubrication Forced lubrication |
Weight (including freezing oil) (Kg) | 117~138 |
APPLICATION SCOPE

BOUNDARY DIMENSION AND LOCATION DIMENSION OF BORE DIAMETER SUCTION GAS PORT AND DISCHARGE GAS PORT

Suction and discharge valve connection size (mm)

PERFORMANCE PARAMETER


Routine Maintenance: Replace lubricant every 8,000 operating hours; inspect valve plates annually; lubricate bearings every 6 months.
Warranty: 12-month limited warranty, covering motor, compressor body, and standard accessories.
Technical Support: Blait provides video tutorials, online diagnostics, and on-site service for contract clients, ensuring minimal downtime.