Winegrowers Supplies - Air-operated Diaphragm pumps
Notes: the internal diameter of your hose must be large enough that excessive turbulence does not occur in the flow:-
20 mm internal diameter, up to 3500 litres/hour,
25 mm internal diameter, up to 5700 litres/hour,
32 mm internal diameter, up to 8600 litres/hour,
38 mm internal diameter, up to litres/hour,
50 mm internal diameter, up to litres/hour,
60 mm internal diameter, up to litres/hour.
Where pump speeds are stated (litres/hour), this is the maximum, at zero pressure.
The speed reduces as pump-head-height increases, typically 5000 litres/hour would reduce to 3000 litres/hour at 2.0 bar pressure.
A bypass, where specified, will allow speed to be reduced and provide pressure control.
Air powered diaphragm pumps are multi-use, safe and easy-to-use. They run on compressed air rather than electricity and move liquid via the compression and
expansion of membranes, or diaphragms, inside the pump housing.
These pumps are very gentle, can have a valve closed against them (advantageous when filling barrels) and can create enough head pressure to move wine uphill, though a sheet filter or across great distances.
Some claim that they are not good for moving mash, but others say that larger models are some of the best pumps for moving juicy mash because they don't chew up seeds and skins like rubber-impeller pumps do. They don't work for dry de-stalked mash, but they are good with all other tasks and especially must pump-overs.
The winery needs to have an air compressor.
It's the only type of pump to use for safely pumping up to 96% alcohol:-
Air-operated FDA CERTIFIED diaphragm pump in AISI 316 stainless steel CERTIFIED ATEX ZONA 2 - - C
EX 3/3 GD c IIB T135°C, choice of outlet threads:-
Pumping height up to 70 metres, maximum pressure 7 bar, suck from up to 6 metres, max liquid temperature 95 °C.
P-50, 1240 Euros
Pumps at up to 3000 litres/hour
Air connection ¼" bsp
Connectors (at extra cost), 1½" Tri-clamp or DN20 or DN25
Chart of pump pressure (blue, 2 to 7 bar) and air consumption (brown, in Nl/minute **), with pump head height H(m):-
pumping speed (litres/minute)
** Nl/min means 'Normal litres per minute'. It is the amount of air that flows through a
pipe, but calculated back to 'Normal' conditions.
Normal conditions being: 0 degrees Celsius, 1 atmosphere (1.01325 bar).
Approximately: divide the Normal liters per minute (Nl/min) by the 'pressure + 1' to get the l/min air flow through the pipe.
for example: 480 Nl/min at 6 bar = 480/7 = 68.5 l/min (= 2.42 cubic feet per minute) compressed air flow through the pipe.
Special hoses are required for alcohol up to 96%: only UPE (Ultra High Molecular Weight Polyethylene) is suitable,
20 mm or 25 mm internal diameter, secure terminations are essential (not just a hose-clip).
I recommend you contact:-
Parishose Ltd, Unit 22 Wellington Business Park, Dukes Ride, Crowthorne, Berkshire, RG45 6LS
Tel: 01344 758 600 e-mail: email@example.com website: www.parishose.co.uk
P-100 and P-160
P-500 and P-700
P-100: pumps at up to 6000 litres/hour, maximum diameter of solids: 3.5 mm, 1790 Euros
Air connection 3/8" bsp, liquid connection 1" clamp. 250 x 175 x 250mmH, weighs 9 kilos.
P-160: pumps at up to 9600 litres/hour, maximum diameter of solids: 7.5 mm, 2250 Euros
Air connection ½" bsp, liquid connection 1½" clamp. 360 x 220 x 365mmH, weighs 20 kilos.
P-500: pumps at up to 30,000 litres/hour, maximum diameter of solids: 8.5 mm, 4415 Euros
Air connection 3/4" bsp, liquid connection 2" clamp. 582 x 345 x 570mmH, weighs 58 kilos.
P-700: pumps at up to 40,800 litres/hour, maximum diameter of solids: 8.5 mm, 4895 Euros
Air connection 3/4" bsp, liquid connection 2½" clamp. 582 x 345 x 570mmH, weighs 60 kilos.
Prices shown are exclusive of Vat.
Delivery usually will need to be charged at cost.