Winegrowers Supplies - Stainless steel Variable Capacity tanks
Variable Capacity tanks, for fermentation and storage, are 'always full' due to the separate pneumatically sealed inner lid which can be set at any height within the tank; during fermentation it is set about 2" above the liquid surface, at other times the lid is lowered to rest on the liquid.
The pneumatic sealing tube is pumped up (to 0.5 bar) with a small hand pump rather like a bicycle tyre pump. When the sealing tubes are new they are a very tight fit, difficult to stretch around the lid. With use they stretch gradually and become progressively easier to fit. A list of tube sizes and prices.
Volume calculations, measurements should be accurate to 0.1 cm :-
1. Before first using a tank:-
a. calculate the volume in litres per cm height = surface area (π r2, where π = 3.14159, r = radius in cm) divided by 1000.
b. calculate the total volume in litres = internal height at the side of the tank (in cm) x the volume in litres per cm height; plus (if the tank has a concave base) the volume of the concave base, measured by pouring in water from a measuring jug.
2. Calculating the volume of liquid in the tank:-
use a tape measure (with the end lowered to touch the liquid surface) to measure the height of the liquid surface below the top of the tank. Measure down on two opposite sides, and take an average of the two heights, as the tank may not be standing quite horizontally. Multiply this average height by the volume in litres per cm height, and subtract the result from the total volume.
Note: cleaning the tanks.
New Variable Capacity tanks from three suppliers:-
Vertical cylinders with flat bottom or concave bottom; flat
bottom tanks can be stood on a small pallet, which can be moved
around with a pallet-truck. All have an attractive 'marbled' finish'.
Internal cooling can be fitted through the lids of all types:-
Italian: high quality, excellent value:-
flat bottom, with one 1" bsp female-thread racking outlet:-
stainless steel stand:-
stainless steel dust cover lids are available at extra cost, for
530 litres (770/750 mm diameter, 1720 mm high) £925
Optional DN40 threads (instead of 1" bsp), £50 extra.
Optional rectangular man-way door (430 x 320 mm) at bottom, for red wine etc, £440 extra
In my winery I changed from Speidel tanks to these, I find that the size of the 1000 litre tank is very convenient to work with.
Or ECO flat-bottom stainless steel tanks:-
variable capacity tanks; slightly thinner stainless steel, marbled finish:-
200 litres (620/600 mm diameter, 750 mm high) ½" bsp female outlet, £279
300 litres (620/600 mm diameter, 1000 mm high) ¾" bsp female outlet, £315
stainless steel dust cover lids are available at extra cost, £33
optional painted steel stands:-
or with just a dust cover lid, instead of the inner floating lid:-
50 litres (385/365 mm diameter, 500 mm high)
½" bsp female outlet, £125
75 litres (385/365 mm diameter, 750 mm high) ½" bsp female outlet, £139
100 litres (435/415 mm diameter, 750 mm high) ½" bsp female outlet, £159
150 litres (530/510 mm diameter, 750 mm high) ½" bsp female outlet, £195
200 litres (620/600 mm diameter, 750 mm high) ½" bsp female outlet, £229
300 litres (620/600 mm diameter, 1000 mm high ) ¾" bsp female outlet, £269
Spare parts: white plastic cap set for floating lid of Italian VC tanks, fits a 44 mm diameter hole,
bulkhead fitting with closing cap and 2 seals, £9.50
Slovenian tanks: excellent quality and good value:-
three legs, concave bottom and V-channel to final drain bottom outlet DN40, racking outlet DN40, butterfly-valves (or ball-valves) DN40 female to DN40 male, DN20 sample valve,
and (from 1500 litre upwards) a level/sight gauge and a crane and winch to hoist the lid.
Prices are complete with all the above fittings:-
Cooling jacket, with two ¾" bsp male threads, 365 Euros per square metre of cooling surface.
Recommended cooling jacket surface area vs volume.
Decantor arm, DN40, rotates through 90 degrees for racking; requires DN40 ball-valve on racking outlet, 200 Euros
thermometer (analogue or digital), 89 Euros
stainless steel Gr.37/70 flap-valve with sealing cap, for using a tank rouser, with reinforced steel, 130 Euros
DN50 outlets and valves, instead of DN40, 55 Euros extra
RJT male threads can be welded to the valve-outlets (instead of DN threads), 30 Euros extra for each
oval man-way door, 'Laveggi A5' for white wine, 500 Euros
rectangular man-way door, 310mm x 420mm at bottom, for red wine, 540 Euros
dust cover lids: 955 mm 75 Euros, 1115 mm 135 Euros,
1370 mm + 1433 mm 210 Euros, 1624 mm + 1751 mm 240 Euros, 1847 mm - 2070 mm 360 Euros
Speidel: made in Germany: please e-mail for delivery lead time:-
Type FO: concave bottom and V-channel to DN40 or DN50 threaded bottom outlet,
three legs, hole for Gr.37/70 flap-valve (or DN40 / DN50 thread):-
530 litres (820 mm diameter, 1.361m high) 756 Euros + delivery from Germany at cost
675 litres (820 mm diameter, 1.620m high) 802 Euros + delivery from Germany at cost
910 litres (820 mm diameter, 2.109m high) 1019 Euros + delivery from Germany at cost
1100 litres (1000 mm diameter, 1.791m high) 1225 Euros + delivery from Germany at cost
1600 litres (1200 mm diameter, 1.831m high) 1608 Euros + delivery from Germany at cost
2200 litres (1400 mm diameter, 1.841m high) 1955 Euros + delivery from Germany at cost
2850 litres (1600 mm diameter, 1.873m high)
2675 Euros + delivery from Germany at cost
3850 litres (1600 mm diameter, 2.361m high) 3190 Euros + delivery from Germany at cost
and many larger volumes, up to 25,000 litres, please ask for prices of those.
The above Speidel prices do not include fittings, when these are added the prices are higher than SSP:-
stainless steel butterfly-valve with sealing cap: DN40 to DN40 or 32-Mainz, 130 Euros
stainless steel butterfly-valve with sealing cap: DN50 to DN40 or 32-Mainz or 1¼" bsp, 130 Euros
stainless steel Gr.37/70 flap-valve with sealing cap, 80 Euros
level/sight-gauge, 159 Euros upwards according to size
sample tap, 40 Euros
temperature gauge housing, with analogue thermometer, 89 Euros
crane to hoist lid (necessary for 2200 litres plus), 155 Euros; this adds 550/640 mm to the height,
man-way door (420 x 320 mm for white wine), 180 Euros
man-way door (for red wine), 540 Euros
cooling jacket, with two 1" bsp male threads, various sizes.
Speidel spare parts:-
orange plastic closing cap for floating lid of Speidel variable capacity tanks, £4.50
white sealing ring to fit inside the cap, £1.00
complete orange plastic cap set (bulkhead fitting with closing cap and 2 seals), £9.50
Replacement pneumatic sealing tubes, 320mm to 2100mm
replacement air-pump, £29.00
pressure gauge only, £9.00
replacement air hose (2 metres long) and the clip, £2.50
Prices shown are exclusive of Vat.
Delivery usually will need to be charged at cost.