Model 1731 Metering Pump

The Model 1731 metering pump features a hydraulically actuated tubular diaphragm design, utilizing a pre-stressed diaphragm and vertical plunger configura­tion. The pre-stressed diaphragm returns to its exact reference position on every suc­tion stroke giving the pump exceptional accuracy, outstanding lift capabilities and minimal NPSH requirements. The ability of the diaphragm to with­stand higher vacuum prevents premature diaphragm failure.

The Model 1731 is available in four different plunger diameter sizes offering maximum capacities from 1.5 gph at a maximum pressure of 3000 psig to 220 gph at a maximum pressure of 150 psig. In addition, all models can be outfitted with an additional pump head (duplex).

The stroke length can be manually adjusted from 0-100%. The adjustment is independent of any internal resistance or pressure, thus allowing effortless manual control. The pump is available in five stroke speeds.  Accuracy is +/-1%.

Applications

• High pressure applications
• Slurries
• Potable water treatment
• Wastewater treatment
• Industrial chemical feed

Optional

• Electronic or pneumatic capacity control
• Double-ball checks for higher pressures
• Back pressure valve for low discharge pressure
• Automatic AC or DC motor speed control by analog input signal
• Leak detection system