LB

Self-priming diaphragm pumps

Ideal for pumping thick, muddy, abrasive liquids with solids in suspension.
They are used in construction and industry.

Applications

Drainage

Drilling plants

Naval

Transfer and agriculture

Treatment

Drainage

Drilling plants

Naval

Transfer and agriculture

Treatment

Operation

How the LB diaphragm pump works
The system consists of a diaphragm guided by a coupling rod. The flow generated by the movement of the diaphragm is controlled by check valves at the suction and delivery.

As the diaphragm rises away from the bottom of the casing it produces a vacuum which draws the liquid into the casing through the suction valve. When the diaphragm is on the downstroke, the liquid is expelled through the delivery valve.

Benefits

  • Rapid dry self-priming down to 6 m in a few seconds
  • Can run dry indefinitely
  • High abrasion resistance
  • Large size solids handling
  • Capacity is proportional to speed
  • Simple construction: the parts subject to wear or aging, such as diaphragms and valves, are easily replaceable

Features

  • Parts in contact with liquid in aluminium, cast iron or  AISI 316 stainless steel
  • Neoprene diaphragm and valves
  • Air cushion chamber to reduce pulsations in the suction line
  • Spring coupling rod to protect against damage due to solids
  • Solids handling up to  2.4"  (60 mm)
  • Liquid viscosity up to 1,000 cSt

Product range

Model Ports
  mm  in 
LB 60 50 2"
LB 65
LB 80 80 3"
LB 80 V
LB 80 V2
LB 100 100 4"
LB 1-4"
LB 2-6" 150 6"

Performance

constructions

industry

safety

RemTech 2016

RemTech is the most specialized event in Italy on contaminated sites remediation and territory protection and requalification. It is characterized by a very accredited exhibition area, a high-level technical and scientific conference session, training courses for ...

Geofluid 2016

The next Geofluid takes place from the 5th to the 8th of October 2016. This international exhibition is the most important specialized event dedicated to the operators of drilling and underground works.  Varisco awaits ...

Varisco delivers 20 Albatross for the TAP project

The Trans Adriatic Pipeline (TAP) will transport Caspian natural gas to Europe. Connecting with the Trans Anatolian Pipeline (TANAP) at the Greek-Turkish border, TAP will cross Northern Greece, Albania and the ...

SIM 2015

The Congress of the SIM (Société de l'Industrie Minérale) meets every year the managers for the exploitation of mines, quarries, industrial minerals and recycling platforms.  Varisco awaits you from the 21st to the 23rd of October 2015 in Mons ...

New Youtube channel !

Varisco S.p.A. is now online with a new Youtube video channel to communicate dynamically and inform its customers on new products and the technological features of its pumps, showcasing their many applications in actual operating environments.   For ...

New Simplex separator

To be a leader in a market such as vacuum prime centrifugal pumps you need to constantly innovate your own product.  Varisco in 2015 introduced the new SIMPLEX separator, a solution with innovative features and many benefits that differs from all ...

Varisco is the new exclusive distributor for Grindex in Italy

In the last five years in Europe all market have experienced strong upheavals and very strong was the contraction of the construction sector. Despite this the best organized companies were able ...