PNEUMATIC PUMPS FOR CORROSIVE LIQUIDS

BX251 – PLASTIC DIAPHRAGM PUMPS

BX251 air-powered double diaphragm chemical pumps made from plastic
Performance curves – BX251 Savino Barbera AODD chemical pumps
BX251
Pump casing material PP, conductive PP, PVDF
Diaphragms material PTFE (fluid side), NBR-EPDM-Hytrel-Santoprene (air side)
Balls material PTFE, AISI 316, EPDM, NBR
Max flow 340 l/min
Max head 80 m w.c.
Max negative suction head – dry running 4 metri
Max negative suction head – primed pump 9.5 meters
Suction and delivery connections G 1 1/2 f o DN 40
Air connections G 1/2 f
Air pressure 8 bar max
Max diameter of suspended solids 6 mm
Max liquid viscosity 45.000 - 50.000 cps
Net weight 17.5 kg (PP), 20 kg (PP conduttivo), 20 kg (PVDF)
Noise level (@ 5 bar with rubber balls) dB (A) 80
Max temperature 65°C (PP), 95°C (PVDF)
Atex certification II 3/3G D IIB T 135°C (Zone 2) II 2/2GD c IIB T 135°C (Zone 1)
BX performances refer to tests with cold, clean water with a density of 1000 kg/m³ (ISO9906) and to pumps with immersed suction and free delivery outlet.

OVERALL DIMENSIONS

BX251 pneumatic pumps are characterised by their extremely small size. Their compact dimensions make them particularly suitable for installation in industrial equipment where it is necessary to handle small quantities of fluid in confined spaces. The square shape of these double diaphragm pumps is perfect for use in awkward environments, unusual positions or places that are hard to access, such as installations in batteries, installations in centralised distribution cabinets, bench-top or ceiling-mounted installations (situations that are very common in the chemical sector, in the handling of inks and paints, in printing machines and in oil circuits). BX AODD pumps also have the possibility of having split manifolds (two suctions and two deliveries).

Ingombri pompe membrana plastica - Overall dimensions AODD plastic pumps BX251

ATEX PUMPS FOR EXPLOSIVE AREAS

BX251 Atex Zone 1 air-operated chemical AODD pumps
BX251 Atex Zone 2 air-operated chemical AODD pumps

BX251 pneumatic pumps hold Atex Approval for use in environments where there is a risk of explosion. The pumps are manufactured to be explosion-proof in compliance with Directive 2014/34/EU according to the harmonised European standards EN-60079-10 and EN 1127-1. It should be remembered that, first and foremost, the user of the equipment is responsible for classifying its area of use, while the manufacturer is responsible for identifying the certification class of the pump manufactured and applying the relevant ATEX marking. To meet all the requirements of the various Zones, BX251 double diaphragm pumps are available in two different versions:

ATEX ZONE 1 – VERSION BY REQUEST ATEX ZONE 2 – STANDARD VERSION

BX series double diaphragm pumps are available, by request, in a special conductive version for use in “Zone 1 – Zone 21”. ATEX marking available:
 

  • II 2G Ex h IIb T4 Gb
  • II 2D Ex h IIIB T135°C Db X

All standard versions of BX series diaphragm pumps are suitable for use in “Zone 2 – Zone 22” (presence of gas and flammable powders). ATEX marking available:


  • II 3G Ex h IIB T4 Gc
  • II 3D Ex h IIIB T135°C Dc X
Air-driven double diaphragm pumps with no electrical components

VERSATILE CHEMICAL PUMPS

The construction principle of Savino Barbera double diaphragm pumps allows the problem-free pumping of dense, flammable or viscous liquids. Regardless of the liquid handled, BX aodd pumps always have an adjustable flow rate and head. They can run dry and can be installed in potentially explosive areas (requiring Atex Certification) or in particularly humid environments. Their internal exchanger (the device that introduces compressed air into the pump) is already lubricated: the air supply does not need to be lubricated and must, on the contrary, be dried and free of impurities (such as oil, dust and condensation).

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AODD pump OPTIONAL FEATURES

How air-powered double diaphragm (AODD) pumps work

Our range of double diaphragm pumps includes numerous optional features and accessories:

 

  • Air regulation kit (filter, reducer, bracket, pressure gauge, hose, tap and fittings).
  • Shock absorber (to minimise flow pulsation).
  • Split manifolds (two suctions and two deliveries).
  • Assembly in three different positions for both delivery and suction.
  • Trolleys for portable versions (on which the diaphragm pumps can be mounted).
  • Flanged connections in PP, PVDF, ALU, AISI 316 (DN15 → DN80).

BX PLASTIC PUMPS – FURHTER MODELS

pompa in plastica bx5BX5
Max flow-rate 6 l/min

pompa in plastica bx7BX7
Max flow-rate 9 l/min

pompa in plastica bx13BX13
Max flow-rate 17 l/min

bx15BX15
Max flow-rate 17 l/min

pompa in plastica bx30BX30
Max flow-rate 30 l/min

pompa in plastica bx50BX50 
Max flow-rate 50 l/min

pompa in plastica bx 100BX81 
Max flow-rate 100 l/min

pompa in plastica bx150BX100
Max flow-rate 150 l/min

pompa in plastica bx220BX150
Max flow-rate 220 l/min

pompa in plastica bx340BX251
Max flow-rate 340 l/min

pompa in plastica bx522BX522
Max flow-rate 650 l/min

pompa in plastica bx503BX503
Max flow-rate 900 l/min

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