Double diaphragm pumps

Double diaphragm pumps, thanks to their technical characteristics, guarantee the greatest level of safety in all industrial applications where the use of compressed air driven pumps is required in the presence of particularly aggressive fluids.

These pumps may be used in explosive environments (ATEX), in situations characterized by high humidity and where the hazards of dry operation are high.

The pumps function using two membranes that simultaneously operate in opposition to each other: the air introduced behind the first membrane pushes the product being pumped towards the discharge and, simultaneously, through the force of the shaft, it drags the other membrane resulting in suction in the suction line. The two Long-Life membranes, which work alternatively in two directions, allow an extremely long duration even when subjected to particularly severe working conditions.

Characteristics

Non lubricated air supply.
Dry operation.
Explosion-proof.
Adjustable flow rate and head.
Speed and pressure control.
Connections on 3 discharge and suction positions and splitting of manifolds.
Quick and simple maintenance.

Automatic coaxial exchanger
Pump casing
Membrane
Collector
Sphere
Membrane

**BX double diaphragm pumps technical data**
Model	BX 50	BX 80	BX 81	BX 100	BX 150	BX 250	BX 251	BX 502	BX 503
Suction/discharge connections - inches	G ½	G 1	G 1	G 1	G 1 ¼	G 1 ½	G 1 ½	G 2	G 3
Air connection - inches	G½	G ½	G ½	G ½	G ½	G ½	G ½	G ½	G ½
Max dry suction lift - m	5	5	6	5	5	5	6	4	5
Max flow rate - l/min	50	90	100	150	220	340	340	650	850
Max head - m	70	70	70	70	70	70	70	70	70
Max supply air pressure - bars	7	7	7	7	7	7	7	7	7
Max diameter of passing solids - mm	3	4	4	4	5	6	6	8	10
Net weight PP - kg	3,6	5,5	---	7,5	12	16	---	54	56
ECTFE - kg	4,2	7	---	9	14	20	---	---	---
Al - kg	4,2	---	6,5	---	16	---	21	---	---
AISI 316 - kg	6,5	10,5	---	---	21	---	32	---	---
PVDF	---	---	---	---	---	---	---	65	67
Materials	PP ECTFE Al Aisi 316	PP ECTFE Aisi 316	Al	PP ECTFE	PP ECTFE Al Aisi 316	PP ECTFE	Al Aisi 316	PP PVDF	PP PVDF

**BX double diaphragm mini-pump technical data**
Model	BX 5	BX 15	BX 25
Suction/discharge connections - inches	G ¼	G 3/8	G ½
Air connection - inches	G 1/8	G 3/8	G ¼
Max dry suction lift - m	3	3	3
Max flow rate - l/min	5	17	26
Max head - m	70	70	70
Max supply air pressure - bars	7	7	7
Max diameter of passing solids - mm	---	0,5	2
Net weight PP - kg	0,5	1	2,6
ECTFE - kg	---	1,5	3,5
Al - kg	---	---	---
AISI 316 - kg	---	---	---
PVDF	---	---	---
Materials	PP	PP ECTFE	PP ECTFE

Technical data subject to change without prior notice
Max dry suction lift: this value depends on the construction materials

Savino Barbera S.n.c. - Via Torino 12 - 10032 Brandizzo (To) - ITALY
Tel.: (+39) 011-913-9063 - Fax: (+39) 011-913-7313