Mechanical seal DIN 24960. Mechanical seal DIN 24960. Magnetic coupling, cartridge seal according to API682, radial shaft seal, without seal.

Pump housing. Pump housing. Housing made of EN-GJS-400, optionally made of steel.

Suction cover. Suction cover. With axial or radial inlet as required. Can be rotated in 90° steps.

Overflow valve. Overflow valve. The adjustable overflow valve ensures that the medium circulates in the event of overpressure.

KRAL G Series Screw Pumps.

Compact lubricating oil pump in modular design.

Everything that moves, whether sliding or rolling, must be lubricated. Energy and cost Efficiency are paramount for operators of rotating machinery, such as compressors, gearboxes and turbines.

The pump that adapts to your needs. The KRAL G series screw pump impresses with a multitude of advantages.

G Series

Operation, materials, components.

Delivery rates: 5 to 660 l/min.
Max. Differential pressure: 25 bar.
Temperature range: -10 °C to 120 °C.
Magnetic coupling to 300 °C.
Viscosity: 10 to 500 mm²/s.
Coldstart to 1200 mm²/s.
Housing: Nodular cast iron ENGJS-400, steel.
Spindles: Steel, nitrided.
Certificates: ABS, BV, CCS, DNV, LRS, MRS, NK, RINA, KR.
API: Conformance with API 676.
Options for ATEX :
EX II -/3 G Ex h IIC T4... T2-/Gc X., with mechanical seal.
EX II -/2 G Ex h IIC T4 ... T2-/Gb X., with magnetic coupling.

Modulare structure.

The modular design of the G series allows for easy customization and configuration according to the specific requirements of the customer. This flexibility makes the pump extremely versatile and adaptable, making it an ideal choice for a wide range of applications. The pump housing, suction, and flange covers can each be rotated in 90° increments. Suction cover with radial and axial connection.

Standardized process connections.

The use of standardized process connections not only simplifies integration into existing systems but also ensures smooth compatibility with various industry standards. As a result, the pump is not only powerful but can also be seamlessly integrated into existing processes.

Compact design.

The compact design of the G series allows for space-saving installation without compromising performance. This is especially important in environments where available space is limited and enables efficient use of the existing area. The pump can be installed either horizontally or vertically and is available in both submersible and dry-mounted versions.

Short delivery times and a good price-performance ratio.

The attractive price allows companies to benefit from the latest pump technology without straining their budget. As a result, the pump offers excellent value for money. Our short delivery times ensure rapid availability of the pump in today’s fast-paced industry, where time is often a critical factor.

Technical data		15-20	32-42	55-85	105-118	160-210	235-275
Qth (1450 min^-1, 0 bar)	l/min	15-20	32-42	55-85	105-118	160-210	235-275
Max. pressure at pressure flange	bar	25	25	25	25	25	25

Temperature	°C
with mechanical seal		120	120	120	120	120	120
with magnetic coupling		300	300	300	300	300	300

Viscosity	mm²/s
min.		10	10	10	10	10	10
max.		500	500	500	500	500	500
Coldstart		1.200	1.200	1.200	1.200	1.200	1.200

Max. pressure at suction flange	bar
with mechanical seal		6	6	6	6	6	6
with magnetic coupling		16	16	16	16	16	16