Helix FIRST V
Multistage in-line pump
High efficiency and robustness for large buildings and other fields of application.
- IE3 fixed-speed motor ensures high efficiency
- Durable and robust with pump housing made of grey cast iron with cataphoretic coating and the laser-welded/cast stainless-steel hydraulics (AISI 304)
- Space-saving as a result of the compact design with integrated mechanical seal – with an operating pressure of up to 16 bar (above this with cartridge mechanical seal)
- Maintenance made easy through convenient access to pump components, such as the bearing integrated in the lantern, as well as the spacer coupling and the cartridge mechanical seal (if used)
- Suitable for high-temperature environments with a standard ambient temperature of up to 50 °C without power dissipation
Wilo-Helix FIRST V
Number of results: [274]
Flow rate Q
0
[0]
Cartridge
Discharge port
Connection type
Motor efficiency class
Max. operating pressure p
Rated power P2
0
[0]
Mains connection
Shaft seal
Recommended services
Design
Non-self-priming, high-efficiency multistage high-pressure centrifugal pump in vertical design with in-line connectionsApplication
- Water distribution and pressure boosting
- Industrial circulation systems
- Process water
- Closed cooling circuits
- Fire-fighting systems
- Washing systems
- Irrigation
Equipment/function
- Corrosion-resistant impellers, guide vanes and stage housings
Type key
Example: | Helix FIRST V 3606/2-5/25/E/KS/400-50 |
Helix FIRST V | Vertical high-pressure multistage centrifugal pump in in-line design |
36 | Flow rate in m3/h |
06 | Number of impellers |
2 | Number of trimmed impellers |
5 | Pump material |
5 = Pump housing EN-GJL 250 cataphoretic-coated, Hydraulics 1.4307 (AISI 304L) | |
25 | Maximum operating pressure in bar |
16 = 16 bar + PN 16 flanges (≤ 16 m3/h: oval flanges) | |
25 = 25 bar + PN 25 flanges | |
30 = 30 bar + PN 40 flanges | |
E | Seal type E = EPDM |
K | Cartridge type mechanical seal |
S | The coupling guard is on a line with suction and discharge ports of the pump. |
400 | Connection voltage in V |
Technical data
- Electrical connection: 3~400 V ±10 %, 50 Hz
- Fluid temperature range: -30 to 120 °C
- Max. operating pressure: 16, 25 or 30 bar
- IP rating: IP55
- Max. ambient temperature: -15 °C – +50 °C
- Helix FIRST V 2 – 16: PN 16 with oval flanges, PN 25/PN 40 with compatible round flanges according to ISO 2531 and ISO 7005
- Helix FIRST V 22 – 52: PN 16/PN 25/PN 40 with round flanges according to ISO 2531 and ISO 7005
Materials
- Impellers, stage housings and guide vanes of stainless steel 1.4307 (AISI 304L) or 1.4401 (AISI 316)
- Pump housing made of EN-GJL 250, cataphoretically coated
- Shaft made of stainless steel 1.4057 (AISI 304L)
- Sleeve under the mechanical seal 1.4404 (AISI 316L)
- O-ring made of EPDM
- Jacket pipe made of stainless steel 1.4301 (AISI 304)
Construction
- Pumps can be adapted to specific circumstances on request (e.g. motor protection, ATEX, extended ambient temperature range).
Scope of delivery
- Helix FIRST V high-pressure multistage centrifugal pump
- Installation and operating instructions
- Helix FIRST 2-16 (version PN16 with oval flanges): Cast iron counter flanges with the corresponding screws, nuts and gaskets