BlackStone Chemical Dosing Pumps Versatility BlackStone pumps have been designed to meet the ever changing needs of industry. With their broad, flat base and mounting holes for tank, shelf or floor mounting (horizontal), the pumps can be easily mounted anywhere in your plant. The rear of the pump housing also provides mounting holes to facilitate vertical mounting: wall, tank or machine. Since the pump valve assembly and controls for the unit are located on the front of the pump, there is never a problem with installation or flow adjustments. Simple Operation BlackStone pumps are equipped with a single control for pump output. The external flow rate control (potentiometer) on the face of the pump allows you to adjust the percentage of flow from 0 to 100% of the pump’s rated capacity. This feature eliminates the need to worry about stroke lengths and power settings. An LED indicator lights up each time a stroke begins, allowing the user to assess the stroke rate from a distance. High Quality Materials BlackStone pumps have been manufactured with the highest level of mechanical precision from materials chosen for their inherent ability to resist the effects of aggressive chemicals. When you select a Blackstone pump, you are eliminating the time consuming effort involved in picking the right material for your application. Blackstone pumps are supplied with the highest quality material as standard equipment—not optional. The diaphragm utilizes one-piece construction of PTFE, which unlike conventional laminated diaphragms, will stand up to the test of time and wear. Ball valves are constructed in glass. The pumphead and O-rings are made of PVDF, PTFE and FPM/FKM which offer unsurpassed resistance. The chemical resistance chart (right) shows how well PVDF and PTFE stand up to some of the most aggressive chemicals. Symbol Key A - Excellent B - Good C - Fair D - Acceptable (limited use) E - Not recommended X - Unknown * PARTIAL LISTING Chemical PVC PP Hypalon FPM/ FKM PVDF PTFE Acetic Acid, 80% D B A E A A Bleach A B A A A B Citric Acid A A A A A A Copper Cyanide A A X B A A Copper Sulfate A A B B A A Ferric Chloride A A B B A A Ferric Sulfate A A B B A A Hydrazine X X B B A A Hydrochloric Acid (concentrated) A A B B A A Hydrochloric Acid (diluted) A A B B A A Hydrofluoric Acid (diluted) D B D A A A Hydrogen Sulfide C A B B A A Magnesium Nitrate A A A A A A Magnesium Sulfate A A A A A A Nitric Acid, 50% A C E A A A Phosphoric Acid B B A B A A Plating Baths A A C A A A Potassium Cyanide A A B B A A Potassium Nitrate A A B B A A Propyl Alcohol C X B B A A Soaps A A B B A A Sodium Bicarbonate A A A A A A Sodium Bisulfite A A A A A A Sodium Hydroxide, 50% A A B E A A Sodium Hypochlorite, 18% A A A D A A Sulfuric Acid (concentrated) A A B A A A Tanning Reagents A A A X A A Trichloretane E C E A A A Chemical Resistance Guide* 15 Process Instrumentation 15.108 | www.hannainst.com BlackStone Pumps
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