Helix V 203-1/16/E/S/400-50

Name: Helix V 203-1/16/E/S/400-50
Brand: Wilo
SKU: 4201339

Multistage in-line pump

Article number: 4201339

Series Helix V

Data sheet

Product data
Product description	Helix V 203-1/16/E/S/400-50

Hydraulic data
Minimum efficiency index (MEI)	0.7
Maximum inlet pressure p inl	10 bar
Maximum operating pressure PN	16 bar
Discharge port	G 1
Min. fluid temperature T_min	-30 °C
Max. fluid temperature T_max	120 °C
Min. ambient temperature T_min	-15 °C
Max. ambient temperature T_max	50 °C

Motor data
Voltage tolerance	±10 %
Rated power P₂	0.37 kW
Rated current I_N	0.95 A
Rated speed n	2850 1/min
Power factor cos φ₁₀₀	0.76
Motor efficiency 50% η_M50%	64.8 %
Motor efficiency 75% η_M75%	71.1 %
Motor efficiency 100% η_M100%	72.8 %

Materials
Pump housing	1.4301
Impeller	1.4301
Shaft	Stainless steel
Mechanical seal	BQ1EGG
Gasket material	EPDM
Stage chamber material	Stainless steel

Installation dimensions
Pipe connection, suction side DNs	G 1
Pipe connection, discharge side DNd	G 1

Ordering information

Product data
Brand	Wilo
Product description	Helix V 203-1/16/E/S/400-50
Article number	4201339
EAN number	4048482592114
Colour	green/silver
Minimum order quantity	1
Date of sales availability	2015-09-01
Previous model article number	4162824
Previous model designation	Helix V 203-1/16/E/S/400-50

Packaging
Packaging type	Cardboard box
Packaging property	Transport packaging
Pieces per pallet	1
Number per layer	1

Dimension, weight
Length with packaging	800 mm
Length L	223 mm
Height with packaging	370 mm
Height H	560 mm
Width with packaging	400 mm
Width W	212 mm
Gross weight, approx. m	20.8 kg
Net weight, approx. m	17.3 kg

Highly efficient high-pressure multistage centrifugal pump in vertical design with in-line connections.

The non self-priming high-pressure multistage centrifugal pump has a compact overall design and is particularly efficient and easy to maintain. The pump shaft and the motor shaft of the IEC standard motor are connected by means of a clamp coupling.

A separate lantern roller bearing ensures optimum admission of axial thrusts. Intermediate bearings in the hydraulics and corrosion-resistant shaft due to stainless steel sleeve ensure a long service life. Special, permanently attached lifting eyes enable easy pump installation.

The pump is suitable for water supply, water distribution and pressure boosting, industrial recirculation systems, process water and closed cooling circuits. It can also be used in fire extinguishing systems, washing systems as well as for irrigation.

Special features/product advantages

Efficiency-optimised, laser-welded 2D/3D hydraulics, flow and degassing optimised
Corrosion-resistant impellers, guide vanes and stage housings
Flow and NPSH-optimised pump housing
Maintenance-friendly design with particularly robust coupling guard
Drinking water approval for pumps with parts that come in contact with the fluid made of stainless steel (EPDM version)

Scope of delivery

Wilo-Helix V high-pressure multistage centrifugal pump
Installation and operating instructions
PN16 version with oval flanges: Stainless steel counter flanges with the corresponding screws, nuts and gaskets

Design notes

Motor protection for 3-phase motor is to be provided on request or onsite
Single-phase AC motor equipped with built-in thermal motor protection and capacitor
In its standard position, the terminal box is aligned with the suction flange, but this can be changed if necessary
The Wilo-Helix V is equipped with a user-friendly mechanical seal in a cartridge design and standard gasket for easy maintenance
The spacer coupling (from ≥ 7.5 kW) allows the mechanical seal to be replaced without removing the motor
The flexible lantern design, which is available in two alignments, enables direct access to the mechanical seal
For pump versions PN16, PN25 and Pmax = 30 bar, round counter flanges in cast iron or stainless steel, screws, nuts and gaskets are available as accessories
Bypass sets are available as accessories
The Wilo-Helix V(F) VdS certified version upon request

Operating data

Product data
Min. fluid temperature T_min	-30 °C
Max. fluid temperature T_max	120 °C
Min. ambient temperature T_min	-15 °C
Max. ambient temperature T_max	50 °C
Maximum operating pressure PN	16 bar
Maximum inlet pressure p inl	10 bar
Minimum efficiency index (MEI)	0.7

Motor data
Voltage tolerance	±10 %
Rated power P₂	0.37 kW
Rated current I_N	0.95 A
Rated speed n	2850 1/min
Power factor cos φ₁₀₀	0.76
Motor efficiency 50% η_M50%	64.8 %
Motor efficiency 75% η_M75%	71.1 %
Motor efficiency 100% η_M100%	72.8 %

Materials
Pump housing	Stainless steel
Impeller	Stainless steel
Shaft	Stainless steel
Shaft seal	BQ1EGG
Gasket material	EPDM
Stage chamber material	Stainless steel

Installation dimensions
Pipe connection, suction side DNs	G 1
Pipe connection, discharge side DNd	G 1

Ordering information
Brand	Wilo
Product description	Helix V 203-1/16/E/S/400-50
Net weight, approx. m	17.3 kg
Article number	4201339

Installation type

In inlet mode (4)
Counter flange (stainless steel)
	Stainless steel counter flange (oval, 2 piece), PN16/DN25	4016168	on request

Baseplate
	Base plate	4157154	on request

Shut-off valve
	Ball valve Rp 1	2663980	on request

Screwed connection for non-return valve
	Screwed connection for non-return valve DN 25	2660509	on request


Level control with fault signal (4)
Float switch WAO
	Float switch WAO 65, 5 m cable	503211595	on request
	Float switch WAO 65, 10 m cable	2006027	on request
	Float switch WAO 65, 20 m cable	2004429	on request
	Float switch WAO 65, 30 m cable	2004430	on request


Level control without fault signal (4)
Float switch WAO
	Float switch WAO 65, 5 m cable	503211595	on request
	Float switch WAO 65, 10 m cable	2006027	on request
	Float switch WAO 65, 20 m cable	2004429	on request
	Float switch WAO 65, 30 m cable	2004430	on request


Pressure control with fault signal (4)
Wilo-EFC
	EFC0.37 3x380-480V 50/60Hz IP55	2193429	on request

Sensor kit
	Sensor kit	2501886	on request

Pressure switch WVA
	Pressure switch WVA up to 6 bar	180492096	on request
	Pressure switch WVA up to 10 bar	2502050	on request


Pressure control without fault signal (2)
Pressure switch WVA
	Pressure switch WVA up to 6 bar	180492096	on request
	Pressure switch WVA up to 10 bar	2502050	on request

Mechanical accessories

Bypass line (2)
Bypass line
	Bypass line for Helix and Medana CV1-L series	4230350	on request

Bypass line (incl. pressure gauge)
	Bypass line and pressure gauge for Helix series	4230571	on request


Valves (2)
Shut-off valve
	Ball valve Rp 1	2663980	on request

Non-return valve
	Non-return valve RV/S R 1	2660842	on request


Pipe installation (1)
Counter flange (stainless steel)
	Stainless steel counter flange (oval, 2 piece), PN16/DN25	4016168	on request


Valves/accessories (1)
Screwed connection for non-return valve
	Screwed connection for non-return valve DN 25	2660509	on request


Wall fixation/installation on a base (1)
Baseplate
	Base plate	4157154	on request

Electrical accessories

Pump control (1)
Wilo-EFC
	EFC0.37 3x380-480V 50/60Hz IP55	2193429	on request


Pump control/accessories (6)
Sensor card EFC
	Sensor Input Card MCB Wilo-EFC	6084915	on request

Low-water cut-out switchgear kit for domestic water systems
	low-water cut-out switchgear kit WMS G2	4204510	on request
	low-water cut-out switchgear kit WMS G2	4204512	on request

Output filter EFC (150-500 m cable length)
	2.4 A sin IP54 Wilo-EFC filter	6084559	on request
	2.5 A sin IP00 Wilo-EFC filter	6084574	on request
	2.5 A sin IP20 Wilo-EFC filter	6084900	on request


Pump control/interface module (5)
IF Modules EFC
	Profibus DP MCA Wilo-EFC	2193451	on request
	DeviceNet MCA Wilo-EFC	2193452	on request
	Profinet MCA Wilo-EFC	2193453	on request
	Ethernet/IP MCA Wilo-EFC	2193454	on request
	Modbus TCP MCA Wilo-EFC	2193455	on request


Pressure control (8)
Pressure sensor for systems
	Pressure sensor, 0 - 6 bar	2550660	on request
	Pressure sensor, 0 - 10 bar	2550661	on request
	Pressure sensor, 0 - 16 bar	2550662	on request
	Pressure sensor, 0 - 25 bar	2550663	on request
	Pressure sensor, 0 - 40 bar	2550664	on request

Pressure switch WVA
	Pressure switch WVA up to 6 bar	180492096	on request
	Pressure switch WVA up to 10 bar	2502050	on request

Sensor kit
	Sensor kit	2501886	on request


Break tank/accessories (4)
Automatic kit
	Automatic kit R ½, 5 m cable	180493296	on request
	Automatic kit R ½, 20 m cable	2005645	on request
	Automatic kit R 1, 5 m cable	180549795	on request
	Automatic kit R 1, 20 m cable	2007158	on request


Level control (13)
Float switch WA
	Float switch WA65 with 5 m cable	503211390	on request
	Float switch WA65 with 10 m cable	503211893	on request
	Float switch WA65 with 20 m cable	2004431	on request
	Float switch WA65 with 30 m cable	2004432	on request
	Float switch WA KR1 S with 5 m cable	6082806	on request
	Float switch WA KR1 S with 10 m cable	6082807	on request
	Float switch WA65 (PSN-X) with 20 m cable	6088843	on request
	Float switch WA65 (PSN-X) with 10 m cable	6088844	on request
	Float switch WA65 (PSN-X) with 5 m cable	6088845	on request

Float switch WAO
	Float switch WAO 65, 5 m cable	503211595	on request
	Float switch WAO 65, 10 m cable	2006027	on request
	Float switch WAO 65, 20 m cable	2004429	on request
	Float switch WAO 65, 30 m cable	2004430	on request


Motor protection (2)
PTC thermistor tripping unit
	PTC thermistor tripping unit	509275993	on request

Surcharge for thermistor sensor (high-pressure centrifugal pumps)
	Surcharge for thermistor sensor (high-pressure centrifugal pumps)	HDK_KLF	on request

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Extended Warranty
	Extended Warranty Booster Set 1-2 pumps	2216416	on request

Supervision
	Supervision Booster Set 1-2 pumps	2216412	on request

Installation
	Installation Booster Set 1-2 pumps	2216413	on request

Commissioning
	Commissioning Booster Set 1-2 pumps	2216414	on request

Maintenance
	Maintenance BASIC Booster Set 1-2 pumps	2160453	on request
	Maintenance PREMIUM Booster Set 1-2 pumps	2160483	on request
	Maintenance COMFORT Booster Set 1-2 pumps	2160468	on request

System Optimisation
	System Optimisation Booster Set 1-2 pump	2216410	on request

Energy Solutions
	Energy Solutions Booster Set 1-2 pumps	2216411	on request

Repairs
	Repair Booster Set 1-2 pumps	2216417	on request

Dimensions DN2	G 1
wss_dimension_L4	100
Dimensions DN1	38.5
Dimensions DN1	38.5
Dimensions L2	102 mm
Dimensions L1	102
Dimensions H	560
Dimensions H1	128
Dimensions H2	336
Dimensions H3	139.5
Dimensions H4	354.5
Dimensions DN1	G 1
Pump flange dimensions ØD	47 mm
Dimensions Ød	58
Pump pipe connection pressure side B1	38.5 mm
Pump flange dimensions Ø k	75 mm
Number of drilled holes n	2
Dimensions dL	11 mm
Motor diameter ØM	121 mm
Motor diameter X	121 mm

Helix V 203-1/16/E/S/400-50

Multistage in-line pump

Data sheet

Pump curves

Dimensions and dimensions drawings

Helix V 2/V4, PN 16

Ordering information

Filtered by

Datasheet and documentation

Generate PDF

Catalogue creation

Installation type

Counter flange (stainless steel)

Baseplate

Shut-off valve

Screwed connection for non-return valve

Float switch WAO

Float switch WAO

Wilo-EFC

Sensor kit

Pressure switch WVA

Pressure switch WVA

Mechanical accessories

Bypass line

Bypass line (incl. pressure gauge)

Shut-off valve

Non-return valve

Counter flange (stainless steel)

Screwed connection for non-return valve

Baseplate

Electrical accessories

Wilo-EFC

Sensor card EFC

Low-water cut-out switchgear kit for domestic water systems

Output filter EFC (150-500 m cable length)

IF Modules EFC

Pressure sensor for systems

Pressure switch WVA

Sensor kit

Automatic kit

Float switch WA

Float switch WAO

PTC thermistor tripping unit

Surcharge for thermistor sensor (high-pressure centrifugal pumps)

Extended Warranty

Supervision

Installation

Commissioning

Maintenance

System Optimisation

Energy Solutions

Repairs