Sub TWI 6

Submersible pump

Long service life thanks to corrosion-resistant stainless steel, optionally in V4A quality
ACS certified for domestic hot water applications
A high degree of flexibility thanks to versions in the 4, 6, 8 and 10-inch area
High range of performance from 1 to 250 m³/h

Wilo-Sub TWI 6

Number of results: [188]

Rated power P₂

[0]

Product description	Mains connection	Motor diameter Ø	Number of stages	Rated power P₂	Minimum efficiency index (MEI)	Connection	Article number	Price (excl. VAT)
Sub TWI 6.18-01-D	3~400 V, 50 Hz	4 in (")	1	0.55 kW	≥ 0.4	Rp 2½	6091443	AUD 1,977.-
Sub TWI 6.18-01-E	3~400 V, 50 Hz	4 in (")	1	0.55 kW	≥ 0.4	Rp 2½	6101600	on request
Sub TWI 6.18-02-D	3~400 V, 50 Hz	4 in (")	2	1.5 kW	≥ 0.4	Rp 2½	6091442	AUD 2,426.-
Sub TWI 6.18-02-E	3~400 V, 50 Hz	4 in (")	2	1.5 kW	≥ 0.4	Rp 2½	6101601	on request
Sub TWI 6.18-04-D	3~400 V, 50 Hz	4 in (")	4	2.2 kW	≥ 0.4	Rp 2½	6091441	AUD 2,967.-
Sub TWI 6.18-04-E	3~400 V, 50 Hz	4 in (")	4	2.2 kW	≥ 0.4	Rp 2½	6101602	on request
Sub TWI 6.18-05-D	3~400 V, 50 Hz	4 in (")	5	3 kW	≥ 0.4	Rp 2½	6091440	AUD 3,409.-
Sub TWI 6.18-05-E	3~400 V, 50 Hz	4 in (")	5	3 kW	≥ 0.4	Rp 2½	6101603	on request
Sub TWI 6.18-06-D	3~400 V, 50 Hz	4 in (")	6	3 kW	≥ 0.4	Rp 2½	6091439	AUD 3,553.-
Sub TWI 6.18-06-E	3~400 V, 50 Hz	4 in (")	6	3 kW	≥ 0.4	Rp 2½	6101604	on request
Sub TWI 6.18-07-C	3~400 V, 50 Hz	4 in (")	7	3.7 kW	≥ 0.4	Rp 2½	6075205	AUD 4,152.-
Sub TWI 6.18-07-E	3~400 V, 50 Hz	4 in (")	7	3.7 kW	≥ 0.4	Rp 2½	6101605	on request
Sub TWI 6.18-10-C	3~400 V, 50 Hz	4 in (")	10	5.5 kW	≥ 0.4	Rp 2½	6075206	AUD 5,185.-
Sub TWI 6.18-10-E	3~400 V, 50 Hz	4 in (")	10	5.5 kW	≥ 0.4	Rp 2½	6101606	on request
Sub TWI 6.18-13-C	3~400 V, 50 Hz	5 in (")	13	7.5 kW	≥ 0.4	Rp 2½	6075207	AUD 7,470.-
Sub TWI 6.18-13-E	3~400 V, 50 Hz	5 in (")	13	7.5 kW	≥ 0.4	Rp 2½	6101607	on request
Sub TWI 6.18-17-C	3~400 V, 50 Hz	5 in (")	17	9.3 kW	≥ 0.4	Rp 2½	6075208	AUD 8,377.-
Sub TWI 6.18-17-E	3~400 V, 50 Hz	5 in (")	17	9.3 kW	≥ 0.4	Rp 2½	6101608	on request
Sub TWI 6.18-20-C	3~400 V, 50 Hz	5 in (")	20	11 kW	≥ 0.4	Rp 2½	6075209	AUD 9,093.-
Sub TWI 6.18-20-C-SD	3~400 V, 50 Hz	5 in (")	20	11 kW	≥ 0.4	Rp 2½	6075210	AUD 9,441.-
Sub TWI 6.18-20-E	3~400 V, 50 Hz	5 in (")	20	11 kW	≥ 0.4	Rp 2½	6101609	on request
Sub TWI 6.18-20-E-SD	3~400 V, 50 Hz	5 in (")	20	11 kW	≥ 0.4	Rp 2½	6101610	on request
Sub TWI 6.18-22-C	3~400 V, 50 Hz	5 in (")	22	15 kW	≥ 0.4	Rp 2½	6075211	AUD 10,200.-
Sub TWI 6.18-22-C-SD	3~400 V, 50 Hz	5 in (")	22	15 kW	≥ 0.4	Rp 2½	6075212	AUD 10,554.-
Sub TWI 6.18-22-E	3~400 V, 50 Hz	5 in (")	22	15 kW	≥ 0.4	Rp 2½	6101611	on request
Sub TWI 6.18-22-E-SD	3~400 V, 50 Hz	5 in (")	22	15 kW	≥ 0.4	Rp 2½	6101612	on request
Sub TWI 6.18-24-C	3~400 V, 50 Hz	5 in (")	24	15 kW	≥ 0.4	Rp 2½	6075213	AUD 10,491.-
Sub TWI 6.18-24-C-SD	3~400 V, 50 Hz	5 in (")	24	15 kW	≥ 0.4	Rp 2½	6075214	AUD 10,847.-
Sub TWI 6.18-24-E	3~400 V, 50 Hz	5 in (")	24	15 kW	≥ 0.4	Rp 2½	6101613	on request
Sub TWI 6.18-24-E-SD	3~400 V, 50 Hz	5 in (")	24	15 kW	≥ 0.4	Rp 2½	6101614	on request
Sub TWI 6.18-27-C	3~400 V, 50 Hz	5 in (")	27	15 kW	≥ 0.4	Rp 2½	6075215	AUD 10,931.-
Sub TWI 6.18-27-C-SD	3~400 V, 50 Hz	5 in (")	27	15 kW	≥ 0.4	Rp 2½	6075216	AUD 11,287.-
Sub TWI 6.18-27-E	3~400 V, 50 Hz	5 in (")	27	15 kW	≥ 0.4	Rp 2½	6101615	on request
Sub TWI 6.18-27-E-SD	3~400 V, 50 Hz	5 in (")	27	15 kW	≥ 0.4	Rp 2½	6101616	on request
Sub TWI 6.18-29-C	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥ 0.4	Rp 2½	6075217	AUD 11,867.-
Sub TWI 6.18-29-C-SD	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥ 0.4	Rp 2½	6075218	AUD 12,223.-
Sub TWI 6.18-29-E	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥ 0.4	Rp 2½	6101617	on request
Sub TWI 6.18-29-E-SD	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥ 0.4	Rp 2½	6101618	on request
Sub TWI 6.18-31-C	3~400 V, 50 Hz	5 in (")	31	18.5 kW	≥ 0.4	Rp 2½	6075219	AUD 13,301.-
Sub TWI 6.18-31-C-SD	3~400 V, 50 Hz	5 in (")	31	18.5 kW	≥ 0.4	Rp 2½	6075220	AUD 13,631.-

Sub TWI 6

Design

Multistage 6" submersible pump in tie strap version for vertical or horizontal installation

Application

Designed for pumping drinking water (in accordance with ACS and RI.SE), rainwater and process water with up to 50 g/m³ sand content from wells and rainwater storage tanks for the following applications:

Irrigation
Sprinkling
Water supply
Pressure boosting
Ground water drainage and lowering

Equipment/function

Integrated non-return valve
Discharge port according to NEMA

Type key

Example:	Wilo-Sub TWI 6.18-04-C-SD
TWI	Series
6	Diameter of the hydraulic unit in inches ["]
18	Rated volume flow [m³/h]
04	Number of hydraulic stages
C	Series generation
SD	Starting mode Without = Direct starting SD = Star-delta starting

Technical data

Mains connection: 3~400 V, 50 Hz
Submerged operating mode: S1
Fluid temperature: 3 – 30 °C
Minimum flow rate at motor: 0.08 – 0.5 m/s (depending on motor)
Max. sand content: 50 g/m³
Max. number of starts: 20/h
Max. immersion depth: 100 m or 350 m (depending on motor)
IP rating: IP68
Discharge port: Rp 2½ - Rp 3

Materials

Hydraulics housing: 1.4301 (AISI 304)
Impellers: 1.4301 (AISI 304)
Hydraulic shaft: 1.4057 (AISI 431)
Motor housing: 1.4301 (AISI 304)
Motor shaft: 1.4301 (AISI 304) or 1.4305 (AISI 303)

Construction

Hydraulics

Tie strap version of multistage submersible pump with radial or semi-axial impellers, integrated non-return valve and a standardised connection:

4" connection: NEMA standard
6" connection: NEMA connection

Discharge port with threaded flange and female thread. All parts that come in contact with the fluid are made of corrosion-free materials.

Motor

Three-phase current motor for direct or star-delta start:

Sealed motor with lacquer-insulated, resin-covered winding and water-glycol filling.
Rewindable motor with PVC-insulated winding and water-glycol filling.

The motor bearings are self-lubricating.

Cooling

The motor is cooled by the pumped fluid. Always operate the pump in a submerged state.
Vertical installation is possible with or without cooling jacket.
Horizontal installation must be performed in conjunction with a cooling jacket.

Scope of delivery

Hydraulics + motor completely assembled
4 m, 5 m or 10 m connection cable approved for drinking water
Installation and operating instructions

Options

Hydraulics in 1.4401 (AISI 316)
Motor in 1.4401 (AISI 316), 1.4408 (ASTM A 351) or 1.4571 (AISI 316TI)
Rewindable motor
Motor with drinking water filling
Pressure shroud version for the direct installation of the pump in the pipe system (max. inlet pressure: 10 bar)
Custom-made

Accessories

Cooling shroud
Pressure shroud
Diaphragm expansion tank
Gate valve
Float switch
Pressure switch
Electrode
Switchgear
Alarm switchgear
Casting resin kit
Connection cable

Sub TWI 6

Submersible pump

Design

Application

Equipment/function

Type key

Technical data

Materials

Construction

Scope of delivery

Options

Accessories

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Datasheet and documentation

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