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  • Hanna Instruments BL20-1 Blackstone Chemical Feed Dosing Pump, 110/115VAC, 7.4 psi, 18.3 LPH
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Hanna Instruments BL20-1 Blackstone Chemical Feed Dosing Pump, 110/115VAC, 7.4 psi, 18.3 LPH


List Price: $163.36
Price: $143.39 & FREE Shipping. Details
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Specifications for this item
Brand Name Hanna Instruments
Part Number BL20-1
Number of Items 1
Item Weight 6.6 pounds
Pressure 7.4  PSI
Pressure Flow Rate 18.3  LPH
UNSPSC Code 40151505

Blackstone's positive displacement solenoid driven pumps use a minimum number of moving parts, th... Read full product description



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Product Features

  • Fiber-reinforced polypropylene pump casing
  • The pumphead and O-rings are made of PVDF, PTFE and FPM/FKM which offer unsurpassed resistance
  • IP65 Protection
  • 120 Strokes per minute dosing frequency
  • Measures 7-19/32" length by 6-1/2" width by 4-51/64" height

Product Details

  • Product Dimensions: 50 x 50 x 50 inches ; 6.6 pounds
  • Shipping Weight: 7.8 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B0085WX72I
  • Item model number: BL20-1
  • Average Customer Review: 2.0 out of 5 stars  See all reviews (1 customer review)
  • Amazon Best Sellers Rank: #118,005 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
  • Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Blackstone's positive displacement solenoid driven pumps use a minimum number of moving parts, therefore reducing the chance of mechanical failure. Part wear and oiling associated with motor driven pumps (ball-bearings, gear drives and camicrosecond) are not a concern with these pumps. Blackstone pumps are more accurate than standard pumps due to the positive displacement design ensuring each stroke is identical to the strokes before and after it, thus keeping the flow rate consistent. Each pump is supplied with discharge and suction valves. 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. 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 diaphragmicrosecond, 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. Blackstone pumps are completely sealed during assembly and offer IP65 protection against splashes and spills providing excellent protection even in hostile environments. The fiber-reinforced polypropylene housing stands up to aggressive chemicals while offering superior strength under tough industrial conditions. Fiber-reinforced polypropylene pump casing. Approximately 200 W max power consumption. 0 to 50 degree C; RH max 95 percent non-condensing environment. Pressure: 7.4 psi. Flow rate: 18.3 LPH.

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Most Helpful Customer Reviews

1 of 1 people found the following review helpful By KevinC on November 17, 2013
Verified Purchase
We use these for irrigation injection. We have had five of them. One failed outright, one only pumps about 40% of of the others, and they all have issues with their one-way valves. These pumps MUST pump into an ambient pressure environment. Any back pressure will feed the target fluid into your source tanks, and any vacuum will suck the source fluid out. It took us many tries to figure out the right injection plumbing for these pumps (requires a siphon and a one-way air admittance valve)

on the positive side these are a lot cheaper than other injection pumps and have capacitors built in so they work well with solid state relay controllers.

Also On the positive side, Hanna tech support is pretty good.
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