Introduction to the MD1

Description 

The CHEM-FEED® MD1 Multi-Diaphragm Pump is a positive displacement chemical metering pump that delivers smooth, continuous chemical feed even when injecting chemicals that off-gas like Peracetic Acid and Sodium Hypochlorite.  The cutting-edge Hyperdrive Technology allows for alternating pumping action between two diaphragms: when one diaphragm is in the suction phase, the other is in the discharge, resulting in a smooth chemical feed profile and minimizing the risk of vapor lock. https://www.youtube.com/watch?v=qzZAU8fGzB0&t=75s 

The MD1 uses either DiaFlex or Flex-A-Prene diaphragms.  DiaFlex diaphragms are guaranteed to last the life of the pump. 

Product Overview / Features 

• The MD1 pump can deliver 8.50 GPH (32.2 LPH) at O psi, 8.18 GPH at 60 psi, 7.68 GPH at 120 psi, and 7.50 GPH at 150 psi.
• Brushless DC Motor is capable of 10,000:1 Turndown. Can achieve low flows without stroke adjustment.  
• Simple manual speed adjustment at the pump. 
• 4-20 mA input and 4-20 mA output. 
• Integral DFD leak detection.  
• Remote Start/Stop via Normally Open or Normally Closed Dry Contact.  
• FVS (Flow Verification System) input.  
• Control Lockout Feature.  
• Wetted parts are PVDF, Aflas, Ceramic (or Teflon), and DiaFlex (or Flex-A-Prene) diaphragms. 
• Simple IP67 M12 connectors for communication wiring. 
• NSF 61 Listed. 
• 5 Year Limited Warranty.

Applications 

The MD1 is designed to provide smooth chemical feed for a variety of chemicals and processes.  It can reliably pump chemicals that off-gas such as sodium hypochlorite, peroxide, ammonia, and PAA (peracetic acid).  

The smooth flow profile and full diaphragm stroke allow the MD1 to effectively pass gasses without vapor-locking, minimizing the need for re-priming.   

The MD1 is constructed of chemical-resistant materials, making it a great choice for aggressive acids and mixed or proprietary chemicals. 

FAQs

Frequently Asked Questions