ALG Series Single-Drive Two-Stage Pump (Liquefied Gas Pump)
Available in three specifications;
Sealing materials are optional;
Equipped with an external pump head for quick repairs, this model is lightweight—weighing between 6 kg and 11 kg—making it easy to carry and ideal for on-site operations.
The pump requires no lubrication and is completely isolated from the pressurized medium, ensuring clean and contamination-free operation.
Suitable for boosting, transferring, and recovering most refrigerants, including R113 and other similar coolants.
ALG Series Single-Drive Two-Stage Pump (Liquefied Gas Pump)
Features
Three specifications available; Sealing materials available upon request; The external pump head allows for quick repairs, is lightweight—weighing between 6kg and 11kg in total—and easy to carry, making it convenient for on-site operations. The pump requires no lubrication and is completely isolated from the pressurized medium, ensuring media cleanliness. Suitable for boosting, transferring, and recovering most refrigerants, such as R113 and other similar refrigerants.
Model and Technical Specifications
Model
Rated Maximum Intake Pressure
Rated Minimum Inlet Pressure
Pressure Calculation Formula
Single-stroke displacement
Entry interface
Export Interface
Drive air interface
ALG04-1S-4
500psi
1/4ATM
4Pa
146mL
1/2" FNPT
1/2" FNPT
1/2" FNPT
ALG06-1T-4
1250psi
1/4ATM
4Pa + ps
164mL
1/2" FNPT
1/2" FNPT
3/4" FNPT
ALG06-1T-4D
1250psi
1/4ATM
4Pa + ps
164mL
1/2" FNPT
1/2" FNPT
3/4" FNPT
*Pa represents the drive air pressure, and Ps denotes the input air pressure.
High-pressure section sealing materials are available; see the compatibility recommendation table for details.
Dimensions
Unit: in. (mm)
Approximate performance
Constant gas output pressure
Model
15 psi at the inlet
250 psi from the inlet
15 psi (1 bar) ▶ Option
Option ▶ 27” HG
50 psi (3 bar) ▶ Options
Option ▶ 23” HG
ALG04-1S-4
Average 0.0396 Nm³/min
Average of 0.3115 Nm³/min
Average of 0.0425 Nm³/min
Average of 0.3115 Nm³/min
ALG06-1T-4
Average of 0.0425 Nm³/min
Average 0.4248 Nm³/min
Average 0.0453 Nm³/min
Average of 0.3964 Nm³/min
Performance Curve
1. Air-driven input: The data assumes a flow rate of 40 scfm (1.132 Nm³/min), representing performance at approximately 100 psi pressure. A smaller air-driven booster pump will produce a proportionally lower output rate.
2. Piping Inlet: The data represents parameters under the assumption of an unrestricted 3/8” NPT inlet pipe. However, in many refrigerant recovery applications, severe restrictions at the inlet supply are unavoidable, which can cause the pump to run dry, thereby reducing the output rate.
3. It is recommended to install safety valves and relief valves downstream, as any pump operating under stall conditions could increase the output pressure beyond the normal pipeline's capacity.
The actual flow rate will depend on whether the refrigerant is in liquid or gaseous form.
