RAM

RAM pumps, with peripheral impeller, are suitable for pumping clean liquids without solid parts in suspension.

They are used in boiler feeding, washing plants, flotation plants in wastewater treatment, in continuous duty in industries and whenever the combination of low capacity and high pressure is required.

Water pumps
Peripheral impeller

Technical information

Working system
RAM.D – RAM.E pumps type are suitable to high pressure even at low capacity. The pump is composed of stages which contain two peripheral impellers with radial blades. The particular impeller shape and the multistage execution allow these pumps to convey steam, air and gas along with the liquid. The maximum gas ratio is about 15% of the pumped liquid. The double inlet suction system allow a good hydraulic balance and the axially adjustable shaft-impellers system guarantee there is no contact among impellers, casing and diffuser.

Working limits
Max working temperature 105°C (water) with standard materials. On demand, are available special seals and gaskets suitable for 120°C in continuous duty. Maximum working pressure 18 bar. Design pressure 25 bar.

Mechanical seals
• Standard: mechanical seal Ceramic/Carbon B/EPDM
(water max 105°C).
• On request: mechanical seal Ceramic/Carbon Z/EPDM (water max 120°C) or other materials according to the pumped liquid.

Standard materials
• Casing and diffusers in cast iron GJL 250 EN 1561.
• Shaft in AISI 420.
• Gasket in EPDM.
• Impellers in brass.

Special materials
• Shaft in AISI 316.
• Impellers in AISI 304 (only for size 14-15-17).
• Viton O-ring and Sil-C4400 flat gasket.

Discharge sizes
DN 32.

Maximum working pressure
Up to 25 bar.

Flow rate
Up to 6,3 m³/h.

Differential head
Up to 180 m.

Temperature
Up to 120°C.

Flanges
EN 1092-2 PN25.