Haskel Model 4B-25 — 0.75 HP Air-Driven Liquid Pump
Rp123000.00
Haskel Model 4B-25 — 0.75 HP Air-Driven Liquid Pump
The Haskel Model 4B-25 is a high-performance, air-driven liquid pump engineered to deliver reliable pressure generation in demanding industrial applications. With a nominal pressure ratio of 25:1 and a single air head configuration, this compact pump efficiently boosts liquid pressure up to 2700 PSIG, making it suitable for a wide range of high-pressure operations.
Designed for exceptional durability and operational safety, the 4B-25 operates pneumatically, eliminating risks associated with heat, flame, or electrical ignition sources. Its infinitely variable cycling speed and ability to stall at a preset pressure without energy consumption make it highly efficient for continuous or intermittent duty. The pump’s proven mechanical design ensures long-term reliability, minimal maintenance, and easy automation with available control and modification options.
Compatible with most liquids and liquefied gases, and available with alternative gas drive options—including sour gas, nitrogen, natural gas, and boil-off gas—the Haskel 4B-25 provides unmatched versatility for industrial pressure applications. The unbalanced cycling spool ensures rapid response to pressure fluctuations, while non-lubricated operation helps reduce costs and prevents system contamination. Units can also be manufactured to meet ATEX, CE, and NACE compliance requirements.
Technical Specifications
Performance
Power Rating: 0.75 HP
Nominal Pressure Ratio: 25:1
Actual Area Ratio: 29:1
Maximum Outlet Pressure (Continuous/Intermittent): 2700 PSIG
Displacement per Cycle: 0.50 cu. in.
Maximum Flow: 238 cu. in./min
Maximum Cycles: 225 cycles/min
Maximum Air Supply Pressure: 100 PSIG
Typical Performance @ 100 PSIG Air Supply
230 in³/min at 1250 PSIG
61 in³/min at 2500 PSIG
Construction Materials
Pump Section: Aluminum
Plunger: Hard-coated Aluminum
Non-Metallic Components: UHMWPE, Buna
Drive & Operation
Air Head: Single air-driven
Operation: Pneumatic, non-lubricated
Control: Infinitely variable cycling; stalls at preset pressure without energy consumption
Automation: Easily automated with various modification and control options
Compliance (Optional)
ATEX
CE
NACE
Applications (Service Code Compatibility)
Service Code 1: Petroleum-based oils, kerosene, ethylene glycol, water with 5% soluble oil
Service Code 2: Plain water, diesel fuel
Service Codes 3–6: Not recommended (N/R)
