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EWN-W

Product catalog summary

Overview: The IWAKI EWN-W series is an advanced electromagnetic metering pump designed for precise water quality control and adaptable to various voltage requirements. It features a diaphragm type mechanism with customizable modes for pH, ORP, conductivity, and cooling tower applications.

Key Features:

Water Quality Control: Offers modes for pH, ORP, conductivity, and cooling tower, allowing customization for specific applications.
High Stroke Speed: Operates at a unique high stroke speed of 360 strokes per minute (spm) for stable chemical dosing.
Controller Variations: Available with WPO (pH/ORP), WEC (conductivity), and WCT (cooling tower) controllers, featuring a large backlit LCD for improved legibility.
High Resolution: Stroke speed can be adjusted in 1 spm increments, allowing fine flow adjustments.
Adjustable Tube Fitting: Newly designed fittings prevent tube twisting during fastening.
Multi Voltage Operation: Compatible with a universal power supply (100-240VAC), making it suitable for use worldwide.
Durable Construction: The pump body is molded with minimal sealing surfaces, achieving IP65 equivalent waterproof and dustproof standards.

Construction Materials:

Pump Head: Made from PVC or GFRPP.
Valve: Constructed from alumina ceramic or Hastelloy C276.
Diaphragm: Composed of PTFE+EPDM.
O-ring and Valve Seat: Available in FKM or EPDM.

Specifications:

Pressure and Capacity: Maximum pressure ranges from 0.2 to 1.0 MPa, with capacities from 38 to 420 mL/min depending on the model.
Power Requirements: Operates on 100-240VAC, 50/60Hz with an average current of 0.8A/20W or 1.2A/24W.
Operating Conditions: Liquid temperature range is 0-40°C for VC/VH types and 0-60°C for PC/PH types. Ambient temperature range is 0-40°C.

Safety and Compliance: Users are advised to read the instruction manual carefully before use. The product may require an export license due to international export control regulations.

Model Identification: The series symbol, drive unit symbol, diaphragm diameter, wet-end material symbol, special version code, controller function code, area symbol, and connection tube diameter are used to identify specific pump models.

Catalog excerpts

IWAKI ELECTROMAGNETIC METERING PUMPS The EWN-W series is a diaphragm type electromagnetic metering pump and features water quality control functions and multi voltage operation. PH, ORP(oxidation-re-duction potential), conductivity or cooling tower modes can be selected to customise the pump for specific applications. A large backlit LCD offers good legibility and the pump uses Iwaki's uniquely high stroke speed of 360spm. The EWN-W promises stable water quality control with fine flow adjustment in continuous chemical dosing situations. Controller variation WPO(pH/ORP), WEC(conductivity) and WCT(cooling tower) controllers are available. Also, the extra large LCD improves legibility and ease of operation. Stroke speed adjustment in 1spm increments allows fine flow adjustment between 1 and 360spm in continuous chemical feeding. Newly-designed adjustable tube fittings eliminate tube twisting when fastening. The EWN-W can be used in all countries thanks to the universal power supply(100-240VAC). Pump body The molded pump body with a minimum of sealing surfaces meets a high level (IP65 equivalent) of both waterproofness and dustproofness. The plastic casing cover further protects the pump when installed in severe environments. Wet-end material Solutions for chemical handling applications

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IWAKI ELECTROMAGNETIC METERING PUMPS Pump identification Series symbol EWN series ^Drive unit symbol (Average power consumption) Wet-end material symbol For details, see the table of materials. VC,VH,PC,PH Controller function code The pH or ORP mode is user selectable for the WPO. The other modes are preinstalled to each controller. WPO: pH/ORP WEC: Conductivity WCT: Cooling tower ^ Special version code No symbol : Standard C: High compression type H: High pressure type Area symbol J: Asia E: Europe Note 1: The maximum discharge capacity of each model represents the figure when the pump is pumping...

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