EJ-B21SH2RN

Walchem EJ-B21SH2RN Economical Chemical Injection Pump, 316SS Pump Head & 3 / 8" OD x 1 / 4" ID Connections. 1.3 GPH Max Flow, 45 Max PSI, 230 Volts, 50 / 60 Hz, PTFE + EPDM Diaphragm, 316SS Valve, 316SS Valve Seat, PTFE Gasket. *** EJ SERIES DISCONTINUED 1 / 2026 CALL FOR REPLACEMENT ***

Brand: Walchem

Series:

EJ Metering Pumps

Item: EJ-B21SH2RN

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Overview

Literature & Manuals

Find the manuals, product sheets and all the information you need

Type	Title	Link
Data Sheets	EJ Series Datasheet	View
Installation & Operation Manuals	EJ Series Manual	View

Series Information

EJ Metering Pumps Information

Product Type
Metering
Features & Benefits
Walchem EJ Chemical Metering Pumps Features & Benefits High Speed Performance The EJ Series operate at 360 strokes-per-minute, providing high resolution chemical feed and high turndown capability. Most competitive products operate at slower speeds, resulting in slug feeding, accelerated diaphragm wear and poor feed control. Universal Voltage The Universal Voltage Function enables the EJ Series to operate at any AC voltage. The EJ Series also conform to global standards. External Control The EJ Series have both digital input and Stop/Start inputs built into the pump, enabling either proportional or On/Off control. IP65 Equivalent Protection A robust housing protects the pump from normal wear. Mounting the Digital Display and Key Pad control within the drive housing creates a highly water resistant design. A clear cover further protects the pump from liquids.
General Description
Walchem EJ Series General Notes 1. All pumps include a Manual Air Vent Valve with the exception of the FC and SH-N Liquid Ends . 2. All pumps include on foot valve, one injection valve, 20ft. of polyethylene tubing and a ceramic weight with the exception of SH Liquid Ends. (E90495 Input connector sold separately) 3. FC and SH pumps have ¼"NPTF connections. FC pumps are supplied with additional tubing compression fittings. 4. PA/TA Liquid ends use AFLAS™ o-rings and PCTFE Seats. 5. The Multi-Function Valve is made of PVDF/FEPM/PTFE materials.

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EJ-B21SH2RN

Type

Title

Link

EJ Series Datasheet

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EJ Series Manual

View

Product Type

Metering

Features & Benefits

Walchem EJ Chemical Metering Pumps Features & Benefits

High Speed Performance
The EJ Series operate at 360 strokes-per-minute, providing high resolution chemical feed and high turndown capability. Most competitive products operate at slower speeds, resulting in slug feeding, accelerated diaphragm wear and poor feed control.

Universal Voltage
The Universal Voltage Function enables the EJ Series to operate at any AC voltage. The EJ Series also conform to global standards.

External Control
The EJ Series have both digital input and Stop/Start inputs built into the pump, enabling either proportional or On/Off control.

IP65 Equivalent Protection
A robust housing protects the pump from normal wear. Mounting the Digital Display and Key Pad control within the drive housing creates a highly water resistant design. A clear cover further protects the pump from liquids.

General Description

Walchem EJ Series General Notes

1. All pumps include a Manual Air Vent Valve with the exception of the FC and SH-N Liquid Ends .
2. All pumps include on foot valve, one injection valve, 20ft. of polyethylene tubing and a ceramic weight with the exception of SH Liquid Ends. (E90495 Input connector sold separately)
3. FC and SH pumps have ¼"NPTF connections. FC pumps are supplied with additional tubing compression fittings.
4. PA/TA Liquid ends use AFLAS™ o-rings and PCTFE Seats.
5. The Multi-Function Valve is made of PVDF/FEPM/PTFE materials.