iïS urn Lapp auto-pneumatic "MICROFLO" PULSAFEEDER precise pumping at micro-flow rates regulated by pneumatic control instruments Here's a controlled-volume metering pump that will vary its microflow rate of output automatically to a changing process condition. Auto-Pneumatic Microflo Pulsafeeder is a piston-diaphragm pump with no stuffing box or other seal—it handles fluids without contamination or leakage. Output of a standard Microflo is governed by controlling the travel of its piston. This is done manually through a micrometer. In the Auto-Pneumatic model, an air cylinder performs this operation. As a change in a process condition occurs, a pneumatic control instrument senses the change, records it and sends an air pressure signal descriptive of the changed condition. Auto-Pneumatic Microflo Pulsafeeder reads this air signal and changes its pumping rate accordingly.
Lapp
Four models are available with flow rangeability of 10 to 1 and a flow range from 585 ML per hour maximum up to 1.2 gph maximum. Reagent head assembly is made from Carpenter No. 20 Stainless, Diaphragm is Kel-F and valves are Hastelloy C. Other materials are available on special order. WRITE FOR BULLETIN 5 0 0 - A containing complete description and specifications on the new Auto-Pneumatic Microflo Pulsafeeder. Lapp Insulator Co., Inc., Process Equipment Division, 6005 Poplar Street, Le Roy, New York.
Circle No. 25 on Readers' Service Card 44 A
INDUSTRIAL AND ENGINEERING CHEMISTRY
