INTRODUCTION Dewey Waters Ltd is a market leader in the manufacture of Glass Reinforced Polyester (GRP) Products. With over 50 years experience, we have accumulated an in depth knowledge of the most efficient designs, testing procedures, up-todate advances in material technology and various manufacturing techniques. Operating from its Head Quarters in Weston-super-Mare, our highly trained staff provide an efficient service throughout the U.K. and abroad. Equipped with the most comprehensive range of GRP products available on the market, our clients can expect to receive an unprecedented unified response from our team which covers technical, design, sales, manufacturing, service and delivery. GRP ONE PIECE STORAGE TANKS One piece storage tanks are an economical alternative to sectional tanks. They promote quick installation, whilst offering the same applications and similar components as sectional tanks to meet specification requirements. While cold water storage is the main application, our one piece tank range is also suitable for storage of mild and even some aggressive chemicals by using specially selected resins. One piece tanks are often used as feed and expansion tanks as they are capable of storing water at temperatures up to 55⁰C. Where necessary, we can quote tanks suitable for continuous operation up to 95⁰C. All our one piece tanks are fully WRAS (Water Regulation Advisory System) approved and certified in accordance with current regulations. When installing a product which will carry or receive water from the public mains water supply in the UK, it is a criminal offence if it does not comply with the water supply (water fittings) regulations or Scottish bylaws. All Dewey Waters products are produced under ISO 9001:2008 quality standard. All our tanks over 1000 litres unless requested otherwise will have lids which come in sections. This means that one part can be removed without uncovering the whole tank. We keep a wide variety of tanks in stock, please turn to page 3 for more details. All our one piece tanks are supplied with a screened vent and screened warning pipe as standard. Float valve housing Screened vent Twist off manway Division Foam recess position for connection Available from 30 litres to 9000 litres within our standard range, up to 18,000 Litres from non-standard range. 1
SELECTING THE CORRECT TANK Sizing Select a size or capacity, see our standard range of one piece tanks on pages 5 and 6. Can t see anything suitable? Talk to our sales team about special one piece tanks on 01934 421477 Insulation Consider what the tank is being used for, where it will be situated and then select a suitable insulation thickness/value from the list below: 25mm - 0.85w/m 2 / ⁰C 50mm - 0.40w/m 2 / ⁰C 75mm - 0.27w/m 2 / ⁰C Uninsulated All our insulation is HCFC and CFC free. Float Valve Housings and Access Hatches Float valve housings permit the inlet valve to be mounted at a higher level on the tank to increase the useable volume of water. We offer a range of different sized access and inspection hatches. Air Gap Requirement Please see page 4 for more details or consult your local Water Authority for further advice. Horizontal Split A tank can be made in two pieces across the height for movement into/ through tight spaces. Horizontally split tanks are not compatible with divisions. Access problems? Reinforced Base The entire base of the tank must be supported when installed. Where this is not possible a Reinforced Base is available for tanks installed on piers or frameworks. Please see page 3 for more details. Twin Compartment Tanks Tanks can be supplied with an internal division to create two compartments. This retains a constant supply of water whilst maintenance takes place. Available in tanks 450 litres and upwards. Condensation Trays We offer a range of condensation trays to compliment our tank sizes. Connections We supply a wide range of optional WRAS approved connections and fittings, below are some of the more common connection types: Inlet valves - Keraflo delayed action and Equilibrium float valves. Outlet/Drain - PN16 Stub flanges and male or female parallel BSP tank connectors. Overflows and Warning Pipes - Screened overflows and warning pipes to meet current regulations. Monitoring Equipment - Level switches, temperature dials, bosses for temperature sensors and remote contents gauges. Sparge Pipes - Where space is limited the inlet and outlet connections may both be required on one end of the tank. Sparge pipes allow water to be drawn from the far side of the tank. This creates a cross flow of water which prevents stagnation in the tank. 2
STOCK TANKS Our range of standard tanks on pages 5 and 6 are usually available as a stock item, complete with 25mm insulation and with or without a raised float valve housing. Stock tanks can be delivered within 2-3 working days. Standard Tank Tank complete with a raised float valve housing. Please note stock tanks are supplied undrilled with recess positions as detailed above. Recess provisions are the areas suitable for drilling and fitting connections. BASE REQUIREMENTS Standard Tanks The entire base of the tank must be fully supported on a concrete/timber* base. *The timber must be supported with beams to sufficiently distribute the tank weight when full. Reinforced Base Tanks Supports must be level and positioned at a maximum of 600mm centres and must have a minimum bearer surface of at least 75mm. 3
AIR GAP REQUIREMENT An air gap is the unobstructed vertical space between the tank inlet and the top water level. We can offer a range of air gaps up to and including an AB air gap for Category 5 fluid stored within our tanks. An AB air gap arrangement will prevent any contaminants in the tank from flowing back into the mains water supply. Please contact our technical sales team if you require assistance in selecting your required air gap. HOUSINGS We offer a range of GRP housings which provide additional frost protection to tanks, pump sets and pipework. Please contact our sales team for details. JUST A SMALL SELECTION OF OTHER PRODUCTS AVAILABLE Sectional Tanks Modular Enclosure Altos Housing ATEC Solar Unit Special Tank Lids and Bylaw Kits 4
STANDARD SIZE TANK LIST Nominal Min** Actual Max** Actual Ext Int Weight excluding Lid Weight including Lid Model Ref Litres Gallons Litres Litres L x W x D L x W x D Kilos Kilos 9000 2000 7930 8780 2645 x 1720 x 2618 2460 x 1535 x 2400 420 485 A1D 9000 2000 6740 8420 5125 x 1824 x 1275 4877 x 1535 x 1200 326 390 A1S20 8200 1800 6070 7590 4642 x 1824 x 1275 4394 x 1535 x 1200 295 365 A1S18 7200 1600 6066 6910 2645 x 1720 x 2108 2450 x 1545 x 1900 356 416 A2D 7200 1600 5370 6710 4134 x 1824 x 1275 3886 x 1535 x 1200 288 343 A1S16 6800 1500 5630 6489 2645 x 1720 x 1984 2455 x 1550 x 1780 329 389 A3D 6800 1500 5050 6310 3906 x 1824 x 1275 3658 x 1535 x 1200 273 325 A1S15 6000 1300 4390 5480 3423 x 1824 x 1275 3175 X 1535 X 1200 246 296 A1S13 5400 1200 4300 5160 2645 x 1720 x 1628 2463 x 1558 x 1420 274 334 A4D 5400 1200 4030 5040 3169 x 1824 x 1275 2921 x 1535 x 1200 230 282 A1S12 5400 1200 4660 5160 1980 x 1380 x 2648 1810 x 1205 x 2440 291 351 B1D 5000 1100 3680 4600 2915 x 1824 x 1275 2667 x 1535 x 1200 215 262 A1S11 4500 1000 3400 4250 2690 x 1830 x 1275 2460 x 1535 x 1200 190 236 A1 4500 1000 3808 4300 1980 x 1380 x 2224 1815 x 1220 x 2020 254 314 B2D 3600 800 2440 3312 2690 x 1830 x 1025 2450 x 1545 x 950 155 200 A2 3400 750 2260 3120 2690 x 1830 x 970 2455 x 1550 x 895 145 190 A3 3230 717 2250 2980 2870 x 1420 x 1030 2670 x 1220 x 990 148 180 M323 3000 666 2100 2780 3180 x 1210 x 1070 3000 x 1000 x 1000 140 172 M300 2700 600 1570 2440 2690 x 1830 x 785 2463 x 1558 x 710 115 155 A4 2700 600 2000 2480 2030 x 1500 x 1290 1810 x 1205 x 1215 130 162 B1 2300 510 1160 2030 2690 x 1830 x 673 2475 x 1568 x 598 100 140 A5 2250 500 1570 2070 2030 x 1500 x 1085 1815 x 1220 x 1010 105 136 B2 2050 455 1560 1930 1735 x 1265 x 1330 1550 x 1050 x 1260 119 130 M205 2000 444 1400 1850 2180 x 1210 x 1070 2000 x 1000 x 1000 99 120 M200 1800 400 1140 1640 2030 x 1500 x 885 1820 x 1225 x 810 85 115 B3 1700 375 1150 1570 1800 x 1470 x 990 1580 x 1185 x 915 85 110 C1 1500 333 1200 1430 1180 x 1180 x 1560 1000 x 1000 x 1500 100 110 M150H 1500 333 1050 1390 1680 x 1180 x 1040 1500 x 1000 x 1000 82 97 M150 1350 300 673 1180 2030 x 1500 x 675 1825 x 1230 x 600 70 90 B4 1350 300 780 1210 1800 x 1470 x 790 1585 x 1190 x 715 73 97 C2 BESPOKE TANKS If you cannot find the tank you need or have a restricted space for your tank, we can make a bespoke tank, custom built to your design. 5
STANDARD SIZE TANK LIST Nominal Min** Actual Max** Actual Ext Int Weight excluding Lid Weight including Lid Model Ref Litres Gallons Litres Litres L x W x D L x W x D Kilos Kilos 1150 250 580 1010 1800 x 1470 x 680 1595 x 1190 x 605 60 73 C3 1015 225 660 930 1645 x 1035 x 890 1440 x 830 x 850 67 84 D1 1000 220 625 910 1380 x 1130 x 840 1250 x 1000 x 800 66 84 D4 1000 220 700 930 1180 x 1180 x 1040 1000 x 1000 x 1000 75 85 M100 950 210 670 880 1290 x 1065 x 1060 1085 x 855 x 1020 60 72 E1 900 200 540 810 1645 x 1035 x 785 1450 x 830 x 745 54 70 D2 800 175 510 720 1290 x 1065 x 885 1090 x 860 x 845 55 67 E2 750 165 470 680 1130 x 1070 x 840 1000 x 937 x 800 50 66 D5 730 160 450 660 1290 x 1065 x 820 1095 x 860 x 780 46 57 E3 700 150 280 560 1645 x 1035 x 570 1455 x 845 x 530 43 60 D3 560 125 270 480 1290 x 1065 x 620 1098 x 870 x 580 25 37 E4 510 113 360 470 1030 x 780 x 1040 850 x 600 x 1000 33 48 M051 500 110 310 450 1130 x 755 x 840 1000 x 625 x 800 32 46 D6 450 100 190 390 1290 x 1065 x 550 1065 x 835 x 510 23 34 E5 420 95 300 380 1130 x 850 x 725 940 x 660 x 685 20 38 F1 340 75 210 290 1130 x 850 x 580 945 x 670 x 540 16 31 F2 250 55 180 230 780 x 655 x 775 650 x 525 x 735 16 28 H1 230 50 100 180 1130 x 850 x 395 950 x 675 x 355 13 27 F3 200 44 150 180 780 x 550 x 775 650 x 420 x 735 13 24 H2 175 38 100 150 840 x 680 x 540 680 x 505 x 500 15 22 G1 175 38 120 150 815 x 615 x 640 650 x 450 x 600 15 22 M017 150 33 85 130 770 x 655 x 490 650 x 525 x 450 12 24 H3 135 30 80 110 780 x 630 x 525 605 x 460 x 485 12 20 DR30 101 23 60 90 615 x 615 x 540 450 x 450 x 500 10 20 M010 100 22 50 80 765 x 615 x 420 605 x 452 x 380 10 19 G2 100 22 55 80 770 x 460 x 490 650 x 340 x 450 9 20 H4 60 13 25 50 570 x 500 x 390 450 x 380 x 350 6 18 H5 45 10 20 35 570 x 405 x 390 450 x 285 x 350 5 16 H6 42 9 15 30 600 x 470 x 345 440 x 315 x 305 6 14 G3 30 8 10 25 570 x 310 x 390 450 x 190 x 350 4 12 H7 ** Actual capacities are dependent on connection sizes and tank configuration CONTACT US Tel: 01934 421477 Fax: 01934 421488 sales@deweywaters.co.uk www.deweywaters.co.uk Drip Trays Should circumstances demand, 100mm deep GRP drip trays are available for all tanks, size of drip trays are listed below. SIDE WALL (100 mm High= 4 ) Ref A Range Tanks B Range Tanks C Range Tanks 2.74 m x 1.83 m 2.08 m x 1.48 m 2.08 m x 1.48 m D 1, 2 & 3 Range Tanks 1.70 m x 1.09 m D4 Range Tanks D5 Range Tanks D6 Range Tanks E Range Tanks F Range Tanks DR-30 Range Tank 1.48 m x 1.23 m 1.35 m x 1.13 m 1.19 m x 0.91 m 1.35 m x 1.13 m 1.19 m x 0.91 m 0.89 x 0.69 m G1 & H1-H2 Range Tanks 0.89 x 0.69 m G2 & H3-H4 Range Tanks 0.85 m x 0.70 m G3 & H5-H7 Range Tanks 0.66 m x 0.51 m M Range Tanks Contact us for available sizes 6