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EWN-B11 Iwaki/Walchem Chemical Metering Pump


Our Price: Starting at $611.00

Product Options

Liquid End Options (0.6 gph, 150 psi):
High-pressure Options (0.4 gph, 250 psi):
Iwaki Pump
EWN Series
Item Number: EWN-B11

The Walchem E-Class Metering Pumps offer superior dosing capability. Superb valve performance and advanced solenoid engineering combine to make a highly precise pump. Its high speed of operation and long service life fit it for applications requiring a pump three times its physical size. Super quiet and compact, E-Class metering pumps prime in seconds and hold prime reliably. LKN and IX Series metering pumps are rugged mechanically actuated diaphragm pumps retaining the advanced design features of the solenoid pumps yet offering high flow rates and output pressures.

Liquid End materials of Construction
Liquid End Code
Pump Head & Fittings
Diaphragm
Valve Balls
Valve Seat
Valve Seals
Gasket
Connections
E-Class
PC
GFRPP
PTFE Bonded to EPDM
CE
FKM
FKM
PTFE
PE Tubing
PE
GFRPP
CE
EPDM
EPDM
VC
PVC
CE
FKM
FKM
VE
PVC
CE
EPDM
EPDM
VF
PVC
PTFE
EPDM
EPDM
VM
M PVC
CE
FKM
FKM
FC
PVDF
CE
PCTFE
PTFE
TC
PVDF
CE
FKM
FKM
HV
PVC
CE
PCTFE
FKM
NPTM
SH
SS
HC
SS
PTFE
1/4" NPTF
VS
PVC
HC/SS
304 SS
EPDM
N/A
VH
PVC
HC
PVC
EPDM
N/A
S6
316 SS
HC
316 SS
-----
N/A
Legend
CE Alumina Ceramic PE Polyethylene SS 316 Stainless Steel
EPDM Ethylene Propylene Diene Monomer PTFE Polytetrafluoroethylene PCTFE Polychlorotrifluoroethylene
FKM Fluoroelastomer PVC Polyvinylchloride(translucent) HC Hastelloy C276
GFRPP Glass Fiber Reinforced Polypropylene PVDF Polyvinylidenefluoride

High Speed Performance 

E-Class pumps operate at 360 strokes-per-minute with adjustments in 1 spm increments, providing high resolution chemical feed. Adjustable stroke length further increases the ability to refine output, making

Multi-function Digital Controller

The controller in the EWN-R pump provides for flexible pump control including scalable analog control, digital input with multiply and divide capability, external stop control, or simple speed and stroke length control. The controller is universal voltage so it can be used anywhere in the world.

Engineered Longevity

All E-Class pumps feature dual bearing support.  The armature and shaft are supported with a bearing on each end, which ensures proper axial movement, enabling the E-Class to operate at 360 spm while extending the life of the diaphragm.

Superior Check Valve Performance

Dual check valve assemblies in both suction and discharge fittings feature precision ball guides and tapered seats. Precise machining and molding of parts limit valve ball travel, ensuring that balls fully seat and seal with every stroke. This superior check valve design guarantees fast priming and reliable performance. 

Flexible Connections

A removable tubing insert provides flexibility of tubing sizes and eliminates twisting of the tubing during connection. A threaded insert can be used in place of the tubing adapter to easily convert any connection to NPT.

High Compression Ratio

The compression ratio of a metering pump is important because it affects the pump’s ability to prime and vent.  The compression ratio is raised when you reduce the dead volume of the pump head during operation.  All E-Class pumps feature a very high compression ratio that ensures proper feed especially with off-gassing products (i.e. Sodium Hypochlorite).

Model
Max Output
Max Pressure
OD Tubing Size
Module
EWN-B09VCURC
0.2 GPH
150 PSI
3/8"
Standard
EWN-B09VCUYC
0.2 GPH
150 PSI
3/8"
Y Module
EWN-B09VEURC
0.2 GPH
150 PSI
3/8"
Standard
EWN-B09VEUYC
0.2 GPH
150 PSI
3/8"
Y Module


Pump Specifications

Model Capacity GPH (mL/min) Discharge capacity per shot mL/shot Rated discharge pressure PSI (MPa) Stroke length adjustable range % Stroke rate % Standard connection
(OD x ID)
Hose dia inches
Current A Average power consumption W Voltage VAC 50/60Hz Shipping Weight lbs (kg)
B11 0.6 (38) 0.02-0.11 150 (1.0) 50-100 0.1-100 (1-360) 3/8 x 1/4 0.8 20 100-240 12 (5.5)
B11-A 0.5 (30) 0.02-0.08 150 (1.0)
B16 1.0 (65) 0.04-0.18 105 (0.7)
B16-A 0.9 (55) 0.03-0.15 105 (0.7)
B21 1.6 (100) 0.06-0.28 60 (0.4)
B21-A 1.4 (86) 0.05-0.24 60 (0.4)
B31 3.2 (200) 0.11-0.56 30 (0.2)
C16 1.3 (80) 0.04-0.22 150 (1.0) 40-100 1.2 24 14 (6.4)
C16-A 1.0 (65) 0.04-0.18 150 (1.0)
C21 2.1 (130) 0.07-0.36 105 (0.7)
C21-A 1.7 (110) 0.06-0.31 105 (0.7)
C31 4.3 (270) 0.15-0.75 50 (0.35)
C36 6.7 (420) 0.23-1.17 30 (0.2)




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