Winegrowers Supplies
- Rubber-impeller pumps
Notes:-
The internal diameter of the hose must be large enough so that significant turbulence does not occur in the flow:-
20 mm internal diameter, up to 3,500 litres/hour,
25 mm internal diameter, up to 5,470 litres/hour,
32 mm internal diameter, up to 8,960 litres/hour,
38 mm internal diameter, up to 12,600 litres/hour,
50 mm internal diameter, up to 21,900 litres/hour,
60 mm internal diameter, up to 31,500 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.
Although mohno-pumps are superior, rubber-impeller pumps are much cheaper and also will pump liquids with suspended solids, so they are useful for: pumping press juice, racking from one tank to another etc. They are particularly useful for pumping very thick liquids (tomato juice, condensed milk etc).
In my opinion they are not ideal for sterile filtration with sheet filters, because the slight pressure fluctuation could push yeasts through the very smallest holes in the filter sheet. They can be used for coarse filtration.
|
As the impeller revolves in the pump casing, a partial vacuum is created at the suction side of the pump by an increase volume, drawing in fluid. This fluid is then transported to the other side of the pump in the spaces between the vanes and the fixed casing. At the discharge side, the available volume is decreased and the resultant increase in pressure forces the fluid into the outlet line. The change in volume is the result of a curvature of the vanes in the pump body. |
|
|
The impeller is made of an extremely elastic rubber which is lubricated and cooled by the liquid flowing. Neoprene is the standard:- the maximum liquid temperature for a Neoprene impeller is 60 °C. |
The question whether a pump is 'self-priming' is often asked. Manufacturers often state that pumps are self-priming, it is a matter of what they mean by self-priming !
The pump chamber will be self-primed from liquid that is just outside the pump chamber. It will not suck liquid along an attached hose unless the chamber is primed with liquid.
If it runs dry for more than a few seconds the rubber impeller will burn; the rubber tips then expand.
You don't need to replace the rubber impeller until it won't pump any more, it should last a long time but it's worthwhile to keep a spare.
Spiral reinforced wine-quality hard-PVC tubing is sometimes used on the inlet side to prevent the tubing collapsing under suction.
When choosing from the following models, the factors to consider are: voltage (230 or 380 Volt), maximum speed, with or without bypass, thread connections,
one-direction or reversible motor, stainless steel or nylon body, motor rotation speed (lower is better), mounting on wheeled trolley or with a carrying handle:-
EP: Italian:- a range of models with variations, stainless steel housing and impeller shaft:-
EP Mini: 1400 litres/hour, 3-phase 380 Volt, 1400 rpm, ¾" bsp male threads, 725 Euros
EP Mini with bypass: 1020 litres/hour, 230 Volt, low rotation speed 900 rpm, ¾" bsp male threads, 1070 Euros
EP Midex: 3000 litres/hour, 1-phase 230 Volt, low rotation speed 900 rpm, DN40 male threads, 1126 Euros
EP Midex with bypass: 3000 litres/hour, 3-phase 380 Volt, low rotation speed 900 rpm, DN40 male threads, 1555 Euros
EP Minor with bypass: 7000 litres/hour, 3-phase 380 Volt, low rotation speed 900 rpm, DN50 male threads, 1744 Euros
EP Major with bypass: 18,000 litres/hour, 3-phase 380 Volt, low rotation speed 700 rpm, DN65 male threads, 2505 Euros
optional extras:-
wheeled trolley to mount the pump on.
Electrical Float kit, wired up ready for use, 170 Euros
+ 60 Euros for an additional capacitor for starter protection; this is not needed if it's used with a JIM-G5 pump.
The float-switch has a special Continental plug, an adaptor is needed to plug this into a UK 13 amp electric socket.
The pump has a normal Continental plug, which is plugged into the back of this float-switch plug.
If the pump is to be used without the float-switch then it is plugged directly into the adaptor, without using the plug for the float-switch.
Internal bypasses on most rubber impeller pumps are expensive, but a bypass can be made by fitting T-pieces directly on the inlet and outlet threads, with a connecting
hose between them. A stainless steel ball-valve is then fitted in the bypass loop (directly on
the T-piece outlet from the pump). With this valve open the liquid being pumped will take the path of least resistance which is back around the bypass loop,
especially as there may also be a suction effect on the bypass hose at the inlet
side of the pump. Closing the valve restricts the flow around the bypass, thus increasing the flow through the outlet hose.
Parts needed can be found in valves and connectors.
I-Z series: large diameter inlet/outlet stainless steel housing, reversible motor (can pump in either direction), on a stainless steel trolley.
Z110: 50 mm diameter in/out, 12,000 litres/hour, low rotation speed 900 rpm, 380 Volt, with bypass for reducing flow,
with DN50 male threads on inlet/outlet, 1646 Euros
available with 230 volt motor, 1.3 kWatt (rather than 1.1 kWatt for 380 volt) for .. Euros extra
Replacement rubber impeller: 143 Euros.
The Z110 can be connected to a hopper with auger to pump mash from a grape de-stemmer into a press or tank.
photo of Z110 connected to hopper and auger:
Stainless-steel, with flow reverser, without bypass, with handle:-
E12: 1200 litres/hour, 3-phase 380 Volt, 1400 rpm, ¾" bsp male threads, with 20 mm hose-tails, 500 Euros or 230 Volt, 670 Euros
E12: 1200 litres/hour, 3-phase 380 Volt, 900 rpm, ¾" bsp male threads, with 20 mm hose-tails, 524 Euros or 230 Volt, 700 Euros
E25: 2500 litres/hour, 3-phase 380 Volt 400 Watt, 1400 rpm, with 25 mm hose-tails, 795 Euros or 230 Volt, 829 Euros
E25: 2500 litres/hour, 3-phase 380 Volt 400 Watt, 900 rpm, 1" bsp male threads, with 25 mm hose-tails, 829 Euros or 230 Volt, 857 Euros
Options for E25:-
Bypass, 67 Euros
Trolley, stainless steel, 99 Euros
VM model - mechanical drive for 900 rpm models, 170 to 900 rpm, 400 to 2500 litres/hour, 711 Euros extra
INV model - frequency Inverter for 900 rpm models, 190 to 900 rpm, 400 to 2500 litres/hour, 1550 Euros extra
Spare rubber impeller, 78 Euros
Stainless-steel, with flow reverser, without bypass, without trolley:-
E40: 5300 litres/hour, 3-phase 380 Volt, 900 rpm, 40 mm Garola clamp fittings (the hose-tail-connector clamp fittings are extra cost), 981 Euros or 230 Volt, 1097 Euros
Options for E40:-
Bypass, 67 Euros
Trolley, stainless steel, 99 Euros
with DN40 male threads on inlet/outlet, 80 Euros extra
Spare rubber impeller, 143 Euros
Stainless-steel, with flow reverser, with bypass, with trolley:-
E70 FL: 8500 litres/hour, 3-phase 380 Volt, 900 rpm, 40 mm Garola clamp fittings (the hose-tail-connector clamp fittings are extra cost), 1240 Euros or 230 Volt, 1307 Euros
Options for E70:-
VMO: gear-motor, 0 to 900 rpm, 0 to 8500 litres/hour, 2290 Euros extra
VM155: gear-motor, 155 to 1000 rpm, 1200 to 8500 litres/hour, 1580 Euros extra
ICDE: Frequency Inverter with radio-control, 32 to 750 rpm, 3500 to 6300 litres/hour, 2999 Euros extra
with DN40 male threads on inlet/outlet, 80 Euros extra
Spare rubber impeller, 143 Euros
Stainless-steel, with flow reverser, with bypass, with trolley:-
E110 FL: 12,000 litres/hour, 3-phase 380 Volt, 900 rpm, 50 mm Garola clamp fittings (the hose-tail-connector clamp fittings are extra cost), 1551 Euros or 230 Volt, 1820 Euros
Options for E110:-
Radio-controlled ON/OFF, 1550 Euros
VMO: gear-motor, 380 Volt only, 0 to 900 rpm, 0 to 12,000 litres/hour, 2290 Euros extra
VM155: gear-motor, 380 Volt only, 155 to 1000 rpm, 1800 to 13,000 litres/hour, 1651 Euros extra
ICDR: Frequency Inverter with radio-control, 32 to 750 rpm, 3500 to 9000 litres/hour, 2999 Euros extra
with DN50 male threads on inlet/outlet, 95 Euros extra
Spare rubber impeller, 143 Euros
Stainless-steel, with flow reverser, with bypass, with trolley:-
E180 FL: 26,000 litres/hour, 3-phase 380 Volt, 900 rpm, 60 mm Garola clamp fittings (the hose-tail-connector clamp fittings are extra cost), 1941 Euros
Options for E180:-
Radio-controlled ON/OFF, 1550 Euros
VM155: gear-motor, 380 Volt only, 155 to 750 rpm, 3200 to 17,000 litres/hour, 1650 Euros extra
ICDR: Frequency Inverter with radio-control, 32 to 750 rpm, 7000 to 17.000 litres/hour, 3560 Euros extra
Electric panel with probe, to stop pump if there is no liquid, 1095 Euros
with DN65 or 2" RJT male threads on inlet/outlet, 112 Euros extra
Spare rubber impeller, 225 Euros
Stainless-steel, with flow reverser, without bypass, with trolley:-
E250 2V: 18,000 / 24,000 litres/hour, 3-phase 380 Volt, 2 rotation speeds 380 / 760 rpm, 80 mm Garola clamp fittings (the hose-connector clamp fittings are extra cost), 2755 Euros
Options for E250:-
Radio-controlled ON/OFF, 1550 Euros
VM155: gear-motor, 380 Volt only, 155 to 750 rpm, 4500 to 24,000 litres/hour, 1650 Euros extra
Electric panel with probe, to stop pump if there is no liquid, 1095 Euros
with DN80 male threads on inlet/outlet, 116 Euros extra
Spare rubber impeller, 225 Euros
Higher speed models are available, prices on request.
Kiesel: German, stainless steel housing (AISI 304):-
|
|
230 Volt, without bypass:
IP01, 0.37 kWatt, up to 1200 litres/hour, Euros 230 Volt, with bypass:
IP03, 1.1 kWatt, up to 5000 litres/hour, Euros |
|
|
380 Volt, without bypass:
IP01, 0.37 kWatt, up to 1200 litres/hour, Euros
IP15, 2.2 kWatt, up to 15,000 litres/hour, Euros |
|
|
380 Volt, with bypass:
IP03, 0.75 kWatt, up to 5000 litres/hour, Euros 380 Volt, with Variable Frequency Drive:
IP01, 0.75 kWatt, 300 to 1200 litres/hour, Euros
IP15, 2.2 kWatt, 3000 to 15,000 litres/hour, Euros |
Mounted on trolley:-
IP01, IP02 and IP03, Euros extra
IP10, Euros extra
IP15, Euros extra
IP20 and IP30, Euros extra
Prices shown are exclusive of Vat, as at May 2023.
Delivery will need to be charged at cost.
