Hollow disk pump type L versions
For increasing the flowrate
"L" Series - Single body
"L" Series - Double body
"L" Series - Triple body
Technical features
Exclusive technology for any application
External seal
High reliability in heavy duty applications.
Self-priming
Automatically priming with vacuum creation in suction side.
Reversible
Fully reversible with same technical features in both directions of rotation.
Elastic
The elastic device of the oscillating hollow disc allows the passage of solid parts.
Low rotation speed
The low operating speed does not emulsify the liquids and guarantees high reliability.
Atex zone 1 standards
Atex zone 1 compliance for all applications in explosion proof areas.
Working principle
Elastic, simple, robust
Working principle
The oscillating hollow disk moves inside the body generating two volumes, the suction volume and the discharge volume, separated by the diaphragm. The fluid passes through the openings of the pump body. The hollow disk is kept pressed against the walls of the body by a spring which makes the system elastic and allows the passage of solid bodies. Compared to competitor models, the new range of hollow disk pumps developed by Belli Meccanica starting from 2008, has wider sliding surfaces and reduced eccentricity of the disk. These technical improvements ensure excellent performance and superior reliability.
Technical features of the hollow disk L series pumps
The seal is set externally inside the rear stuffing box and the pump shaft, equipped with a replaceable hardened wear bushing, is supported on bushing bearing. This arrangement makes the pump suitable for critical applications and for use in continuous service. The particular configuration allows the monitoring and replacement of the seal from back (back-pullout design) without dismantling the pump body, and allows the installation of any type of seal.
Rear external seal: Installation of every type of seal (single mechanical, double, Api plans), Easy seal replacement from back (back-pullout design) without dismantling the pump body
-
Body sealed with O-rings (NBR, VITON, PTFE, KARLEZ), no liquid or flat gaskets
-
Hollow disk with guided bushing bearing
-
Heavy duty shaft supported on bushing bearing with replaceable hardened wearing bushing
-
Rear external seal: Installation of every type of seal (single mechanical, double, Api plans), Easy seal replacement from back (back-pullout design) without dismantling the pump body
-
In-line coupling: No misalignment, No vibrations, Longer bearings life
-
Available: Atex electric motor, Manual speed variator, VFD inverter variator
Available seals for L pump series
Installation of every type of seal allowed
