BL 7917 ORP Controller and Chemical Dosing Pump •ORP controller and dosing pumps in one compact unit. •±5 mV accuracy with unbeatable performance. •Isolated 4 to 20 mA recorder output. •Proportional dosing slows the pump down when the measured ORP level approaches the set value, to avoid over dosage of oxidizing or reducing agents. •Alarm contact is activated whenever the ORP reading varies more than 200 ... Read More »

BL 7916 pH Controller and Chemical Dosing Pump •pH controller and dosing pump in one compact unit. •±0.01 pH accuracy with unbeatable performance. •Isolated 4 to 20 mA recorder output. •Proportional dosing slows the pump down when the measured pH level approaches the set valve, which ensures precise dosage and avoids costly waste of chemicals due to overdosage. •Alarm contact is activated whenever the pH value ... Read More »

HI 721103 Suction valve assembly Suction valve assembly. Read More »

HI 721101 Pump head, O-ring, screws (6 pcs) and washers (6 pcs) Pump head, O-ring, screws (6 pcs) and washers (6 pcs). This kit contains the PVDF (PolyVinyliDene-Fluoride) pump head, PTFE (PolyTetraFluoro-Ethylene) coated O-ring, six screws and washers. Read More »

HI 721006 Springs for BL Pumps Springs for BL Pumps This kit contains four PVDF (PolyVinyliDene-Fluoride) springs. Read More »

HI 721005 Foot Valve Assembly Foot valve assembly This kit contains a filter with a filter holder and a valve assembly. Read More »

HI 721004 Injection Valve Assembly Injection valve assembly. Complete with an injection nipple, PTFE (PolyTetraFluoro-Ethylene) coated spring, glass valve ball and a valve assembly. Read More »

HI 721003 Glass Ball with O-ring Glass ball with O-ring This kit contains 10 glass balls and 10 valve O-rings. Read More »

BL Series Pumps Blackstone Dosing Pumps BL Series Dosing Pumps 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 cams) are not a concern with these pumps. Blackstone pumps are more accurate than standard pumps due to the ... Read More »