Wilo Atmos GIGA-I
wilo Atmos GIGA-I 125/250-11/4 2218492
- Established 1975
- Trusted by thousands of customers
Wilo Atmos GIGA-I 125/250-11/4 in-line pump, 400 V three-phase
Single-stage glanded centrifugal pump with in-line design for pipe installation or installation on a base.
11 kW motor. DN 125 connection, 620 mm port to port.
More about this product
Overview
Single-stage glanded centrifugal pump with in-line design for pipe installation or installation on a base. Low-oscillation and low-noise close-coupled design with lantern and rigidly connected standard flange motor. With force-flushed, bidirectional bellows mechanical seal (from 37 kW/4-pole, optionally available with a cartridge mechanical seal in back pull-out design for mechanical seal replacement without dismantling the motor) and cavitation-reducing impeller. Flange with R 1/8 pressure measuring connections.
All grey cast iron components are cataphoretic-coated.
Pumps with motors ≥ 5.5 kW are equipped as standard with a PTC thermistor sensor for motor protection.
The motor terminal box ≤ 7.5 kW can be made of metal or plastic. If a metal terminal box is absolutely necessary, please order the appropriate special variant. The motor terminal boxes > 7.5 kW are always made of metal.
Specification
| Model | Wilo Atmos GIGA-I 125/250-11/4 |
|---|---|
| Part number | 2218492 |
| Series | Atmos GIGA-I |
| Supply | 400 V three-phase, 50 Hz |
| Rated power P2 | 11 kW |
| Rated current | 21 A |
| Speed | 1450 rpm |
| Poles | 4 |
| Max. operating pressure | 16 bar |
| Fluid temperature | -20 °C to 140 °C |
| Max. ambient temperature | 40 °C |
| Dimensioning note | 16 bar to 120 °C, 13 bar to 140 °C |
| Minimum efficiency index (MEI) | ≥ 0.4 |
| Motor efficiency class | IE3 |
| Protection class | IP55 |
| Insulation class | F |
| Motor protection | PTC integrated |
| Power factor | 0.83 |
| Motor efficiency at full load | 91.4 % |
Materials
| Pump housing | 5.1301/EN-GJL-250 KTL-coated |
|---|---|
| Impeller | Grey cast iron EN-GJL-200 |
| Shaft | Stainless steel |
| Mechanical seal | AQ1EGG |
| Lantern | 5.1301/EN-GJL-250 KTL-coated |
Dimensions and weight
| Pipe connection, suction | DN 125 |
|---|---|
| Pipe connection, discharge | DN 125 |
| Port-to-port length | 620 mm |
| Length × width × height | 998 × 409 × 620 mm |
| Net weight | 228 kg |
Features and equipment
Features
- Mechanical seal for pumping water up to Tmax = +140 °C. Up to T ≤ +40 °C, a glycol admixture of 20 % to 40 % by volume is permissible. An alternative mechanical seal must be provided for water-glycol mixtures with a glycol content of > 40% to max. 50% by volume and a fluid temperature of > +40 °C to max. +120 °C or other fluids that differ from water. When using water-glycol mixtures, the use of an S1 variant with a corresponding mechanical seal is generally recommended.
Frequently asked questions
Technical data
- Permitted temperature range of the fluid: -20 °C to +140 °C
- Max. ambient temperature 40 °C
- Mechanical seal for pumping water up to Tmax = +140 °C. Up to T ≤ +40 °C, a glycol admixture of 20 % to 40 % by volume is permissible. An alternative mechanical seal must be provided for water-glycol mixtures with a glycol content of > 40% to max. 50% by volume and a fluid temperature of > +40 °C to max. +120 °C or other fluids that differ from water. When using water-glycol mixtures, the use of an S1 variant with a corresponding mechanical seal is generally recommended.
- Mains connection 3~400 V, 50 Hz (others on request)
- IP rating IP55
- Nominal diameter DN 32 to DN 250
- Standard version for operating pressure: 13 bar (up to +140 °C) / 16 bar (up to +120 °C)
Materials
- Pump housing and lantern: Standard: EN-GJL-250;
- Impeller: Standard: EN-GJL-200; special version: Bronze CuSn 10 stainless steel 1.4408
- Shaft: 1.4122
- Mechanical seal: AQEGG; other mechanical seals on request
Construction
Single-stage, low-pressure centrifugal pump in in-line design with
- Mechanical seal
- Flange connection with pressure measuring connection R 1/8
- Lantern
- Coupling
- IEC standard motor
Scope of delivery
- Pump
- Installation and operating instructions
Options
- …-L1 variant with bronze impeller (at additional charge)
- …-L4 variant with stainless steel impeller (at additional charge)
- …-P6 variant with back pull-out design and cartridge mechanical seal
- …-H1 variant with housing made of ductile cast iron on request
- …-P4 variant for max. operating pressure of 25 bar on request
- …-P2 variant: Drinking water version on request
- Other voltages and frequencies as well as ATEX approval on request
Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.
Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).
Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.
Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.
Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.
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Frequently Asked Questions
Quick answers to common questions about the wilo Atmos GIGA-I 125/250-11/4 2218492. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.
What are centrifugal pumps used for?
Centrifugal pumps use a rotating impeller to move liquids and are commonly used for water transfer, circulation and industrial processes.
How do I choose a centrifugal pump?
Compare the required flow rate, total head, liquid characteristics and electrical supply with each pump’s performance curve.
Are centrifugal pumps suitable for dirty water?
Some are designed for clean water only, while others handle solids or wastewater. Check the particular pump’s permitted liquid and solids specification.
What types of Wilo pumps are available?
Wilo manufactures circulators and other pumping solutions for heating, cooling, water supply and building services applications.
What is a Wilo circulator pump used for?
A Wilo circulator moves water around a heating or cooling circuit to maintain the required flow through the system.
How do I select a replacement Wilo pump?
Match the existing model or confirm head, flow, installation length, connections, voltage and control requirements before ordering.