Your advantages

• 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

Design

Non-self-priming, high-efficiency multistage high-pressure centrifugal pump in vertical design with in-line connections

Application

• Fire Fighting

Equipment/function

• Corrosion-resistant impellers, guide vanes and stage housings

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

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)

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