B.N. Engineering & Technology Ltd.
Air-driven liquid pumps: how to choose one
B.N. Engineering & Technology Ltd., an official HASKEL importer in Israel, helps review air-driven liquid pump requirements using the fluid, operating point and available drive air.
Specify an operating point
State the required outlet pressure and flow at that pressure. Add fluid, temperature, inlet pressure, system volume and duty cycle; record missing data as questions to resolve. Use the exact model performance curve to compare candidates.
Understanding pressure ratio
The pressure ratio helps explain the pumping principle but does not replace performance curves or model limits. Do not select a pump solely by multiplying drive-air pressure by a ratio. Check flow and air consumption at the required operating point.
Example families
The site catalogue includes HASKEL M, MS, 4B, ASF and DSF families. M-71 and 4B-100 can help identify existing equipment; they are not automatically interchangeable. [לאשר: recommended models for each application after requirement review].
Service and integration
B.N. performs HASKEL repairs in-house in Israel. New equipment selection should also address connections, regulation, filtration, measurement and pressure protection within the system design. [לאשר: accessory supply, installation support and documentation scope].
Compare liquid-pump requirements by duty
| Liquid-pump duty | What to compare between candidate pumps | Information to send |
|---|---|---|
| Fill and hold pressure | Flow during filling, pressure limit and compatible seals | Fluid, vessel volume, target pressure and required filling time |
| Repeated pressure-test cycles | Flow throughout the pressure ramp, duty cycle and air consumption | Cycle frequency, ramp time and available drive-air flow |
| Supply liquid at operating pressure | Delivered flow at the actual operating point on each model curve | Required simultaneous flow and pressure, temperature and inlet conditions |
| Replace an existing M, MS, 4B, ASF or DSF pump | Full code, fluid compatibility, connections and performance; family names alone are insufficient | Nameplate, current duty and reason for replacement |
Distinguish equipment types
| Criterion | Air-driven liquid pump | Gas booster | Air amplifier |
|---|---|---|---|
| Working medium | A compatible liquid | Process gas approved for the configuration | Compressed air |
| Selection inputs | Fluid, pressure and flow, duty cycle | Gas, inlet-pressure range, outlet pressure and filling time | Supply pressure, required pressure and air demand |
| Example families | M, MS, 4B, ASF, DSF | AG, AGD, AGT | AA, AAD, AAT, HAA31 |
| Example application | Hydrostatic testing | Gas transfer or vessel filling | Point-of-use air pressure boosting |
| Check before ordering | Materials, seals and performance curve | Gas compatibility and manufacturer configuration | Available flow and duty cycle |
How the process works
- Describe the liquid and the purpose of the system.
- Specify simultaneous pressure and flow, volume and cycle time.
- Collect air-supply, temperature and connection data.
- Compare families and configurations using manufacturer documentation.
- Send B.N. a specification or the available information for review and a quotation.
We usually respond within a few hours. Quotation and service timing depend on the specific request.
Buyer questions
What is an air-driven liquid pump?
Compressed air provides the drive power while liquid is the working medium. It is different from a booster designed to compress a gas.
How do I compare pumps with the same maximum pressure?
Compare flow at operating pressure, fluid compatibility, duty cycle and air consumption. Equal maximum-pressure ratings do not establish equal performance.
Can I choose by pressure ratio alone?
No; the ratio is only one model parameter. Review performance curves, limits and drive-air conditions as well.
Can a liquid pump be used as a gas booster?
Do not repurpose equipment for a medium or use that is not approved for its configuration. A gas inquiry requires an appropriate booster family and manufacturer review.
Can I ask for help without knowing a model?
Yes, start with the application and the information you have. B.N. can identify the additional inputs needed to progress the selection.
What is the response time, and is repair local?
We usually respond within a few hours. B.N. repairs HASKEL products in-house in Israel and supplies a test report after repair. [לאשר: repair turnaround and model-specific service scope].
Reference links
Manufacturer references describe products; importer status and the service route are company information. Final configuration and service scope require a specific quotation.