"Screw pumps and flow measurement technology"
Austrian manufacturer of three-screw pumps and flow measurement technology for lubricating, fuel and hydraulic oils and other viscous media. KRAL was founded in 1950 and is an independent family enterprise headquartered in Lustenau, Austria, offering screw pumps, pump stations, flow meters, customer-specific system solutions and after-sales service. The main sectors are marine, power generation, oil and gas, mechanical engineering and the chemical industry. The pump programme comprises the C, K, L, W, G, F and Z series: high-pressure pumps with lubricating media (C, up to 100 bar), the universal K series (up to 16 bar, 2,900 l/min), the compact L series (up to 63 bar), the W series with polymer-coated casing for dirty low-viscosity media such as cooling lubricants (up to 120 bar), the G series for lubricating oil supply of turbines, compressors and gearboxes, the hermetic F series with magnetic coupling for future fuels such as methanol, ammonia and biofuels, and the two-screw Z series for aggressive and contaminated media up to 1,060 m³/h. The company is certified to ISO 9001, ISO 14001, ISO 45001 and ISO 3834-2 by TÜV Austria, and its pumps carry marine approvals (ABS, BV, DNV, LRS, RINA and others), ATEX approval and API 676 construction options.
Industries served
Applications
Product portfolio
7+ product families. KRAL screw pumps are positive displacement pumps that convey the medium continuously and with low pulsation in the closed chambers between the screws and the housing; the pressure is built up linearly along the screw and the pump is hydraulically balanced axially. C series (CK, CL, CG): 5 to 3,550 l/min, up to 100 bar, -20 to 180 °C. K series (KF, KH, KV, KFT): up to 2,900 l/min, 16 bar. L series (LFI, LFT, LVI, LVT): up to 63 bar. W series: dirty media, up to 120 bar. G series: lubricating oil supply, up to 25 bar, API 676 construction. F series: hermetic magnetic-coupling pumps in stainless steel for future fuels, up to 120 bar. Z series (3000, 5000, 11000): 20 to 1,060 m³/h, up to 25 bar, -40 to 300 °C, viscosity up to 100,000 mm²/s. Magnetic-coupling versions reach 300 °C and heating is available (electrical, media or steam).