Walchem EJ Series Metering Pumps
Outputs 3.2 GPH (12.0 LPH) and a maximum pressure of 175 PSI
The Walchem EJ Series Metering Pumps deliver precise and dependable chemical dosing, engineered for versatility and global compatibility. Featuring universal voltage capability, these pumps operate seamlessly within a wide range of 100-240VAC, making them an ideal choice for industries worldwide. Compact and user-friendly, the EJ Series is designed to excel in diverse applications, from water treatment to chemical processing, industrial cleaning, and agricultural dosing.
With a maximum output of 3.2 gallons per hour (12.0 liters per hour) and the ability to handle pressures up to 175 PSI (1.2 MPa), these pumps combine performance and precision to meet demanding requirements without exceeding your budget. Their durable construction ensures reliable operation even in harsh environments. The EJ Series provides exceptional value and reliability, making it a cost-effective solution for your chemical dosing needs.
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Overview
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Ordering Information
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Specifications
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Literature
Key Benefits
Discover how the Walchem EJ Series Metering Pumps stand out as a reliable and versatile solution for precise chemical dosing in demanding environments:
High-Speed Performance: The EJ Series operates at an impressive 360 strokes per minute, enabling precise chemical dosing with exceptional turndown capabilities. This high-speed design minimizes diaphragm wear, ensuring longevity and enhanced process control for demanding applications.
Universal Voltage Compatibility: Designed to seamlessly adapt to global power standards, the EJ Series supports operation at any AC voltage from 100 to 240VAC. This flexibility simplifies system integration, making it an excellent choice for diverse industrial setups.
Advanced External Control: Equipped with built-in digital inputs and Start/Stop controls, the EJ Series provides unmatched versatility for proportional dosing or straightforward On/Off operation. These advanced features ensure precision and adaptability for various chemical dosing tasks.
IP65-Rated Protection: Built for durability, the rugged, water-resistant housing offers reliable protection against harsh environmental conditions. The clear cover shields the digital display and keypad from liquids while ensuring easy access to controls.
Ordering Information
When ordering, please use the model number breakdown to specify the exact configuration needed for your application.
Model Number Breakdown
| Component | Code | Description |
|---|---|---|
| Drive Unit Symbol | EJ | Standard drive unit |
| Max Capacity | B11, B16, B21, B31, B31-L | Varies based on model, ranging from 0.6 GPH to 6.7 GPH |
| Diaphragm Diameter | 10.6mm, 19mm, 31mm | Dependent on model |
| Liquid End Material | VC, TC, TA, PF, SHN | Various material options such as PVC, PVDF, GRPP, 316SS |
| Valve Code | CE, AF | Materials for the valve seat, options include CE and AF |
| O-Ring | EPDM, FKM | Options include EPDM, FKM |
| Valve Ball | CE, AF, 316SS | Options for the valve ball, including CE, AF, and 316SS |
| Gasket | PTFE | Standard PTFE |
| Diaphragm | PTFE | Standard PTFE diaphragm for durability |
Specifications
| Specification | Details |
|---|---|
| Model | B11, B16, B21, B31, B31-L |
| Max Capacity (GPH) | B11: 0.6, B16: 1.5, B21: 3.2, B31: 6.7, B31-L: 5.4 |
| Max Pressure (PSI) | B11: 150, B16: 100, B21: 60, B31: 30, B31-L: 150 |
| Stroke Rate (SPM) | Up to 360 |
| Power Consumption | 22 Watts (Avg) |
| Diaphragm Diameter | B11/B16: 10.6mm, B21/B31: 19mm, B31-L: 31mm |
| Weight | 8.8 lbs (4 kg approx.) |
| Power Supply | 100 to 240VAC, 50/60Hz, Single Phase |
| Ambient Temperature | 32°F to 104°F (0°C to 40°C) |
| Liquid Temperature (PVC) | 32°F to 104°F (0°C to 40°C) |
| Liquid Temperature (PP or PVDF) | 32°F to 140°F (0°C to 60°C) |