Wilo-Sub TWI 6 | Wilo

Wilo-Sub TWI 6

Wilo-Sub TWI 6

Your advantages

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

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

Typekey

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)
Protection class: 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

Submersible pump for vertical or horizontal installation.

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

Installation and operating instructions

Wilo-Sub TWI 4-6

Article Number	4069717
Edition	2021-10
Number of pages	60
Language	bg, cs, da, el, en, et, fi, hr, hu, it, lt, lv, mk, nl, no, pl, pt, ro, sl, sr, sv, uk

PDF (3 MB)

Wilo-Sub TWI 4-6

Article Number	4069717
Edition	2021-10
Number of pages	12
Language	en

PDF (980 KB)

Certification booklet

Wilo-Sub TWI 4, Wilo-Sub TWI 6/TWI 06, Wilo-Sub TWI 8/TWI 08, Wilo-Sub TWI 010

Article Number	6080451
Edition	2022-02
Number of pages	24
Language	language neutral

PDF (4 MB)

Group Statement

Group Statement REACH

Edition	2021-05
Number of pages	5
Language	language neutral

PDF (327 KB)

Certificate

Wilo-Sub TWI

Article Number	6080451
Edition	1612
Number of pages	14
Language	language neutral

PDF (388 KB)

RCM

RCM 2223465

Number of pages	1
Language	language neutral

PDF (218 KB)

RCM 2223484

Number of pages	1
Language	language neutral

PDF (198 KB)

Number of results: 94

Rated power P₂

0.55 … 37 kW

[94]

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	on request
Sub TWI 6.18-02-D	3~400 V, 50 Hz	4 in (")	2	1.5 kW	≥0.4	Rp 2½	6091442	on request
Sub TWI 6.18-04-D	3~400 V, 50 Hz	4 in (")	4	2.2 kW	≥0.4	Rp 2½	6091441	on request
Sub TWI 6.18-05-D	3~400 V, 50 Hz	4 in (")	5	3 kW	≥0.4	Rp 2½	6091440	on request
Sub TWI 6.18-06-D	3~400 V, 50 Hz	4 in (")	6	3 kW	≥0.4	Rp 2½	6091439	on request
Sub TWI 6.18-07-C	3~400 V, 50 Hz	4 in (")	7	3.7 kW	≥0.4	Rp 2½	6075205	on request
Sub TWI 6.18-10-C	3~400 V, 50 Hz	4 in (")	10	5.5 kW	≥0.4	Rp 2½	6075206	on request
Sub TWI 6.18-13-C	3~400 V, 50 Hz	5 in (")	13	7.5 kW	≥0.4	Rp 2½	6075207	on request
Sub TWI 6.18-17-C	3~400 V, 50 Hz	5 in (")	17	9.3 kW	≥0.4	Rp 2½	6075208	on request
Sub TWI 6.18-20-C	3~400 V, 50 Hz	5 in (")	20	11 kW	≥0.4	Rp 2½	6075209	on request
Sub TWI 6.18-20-C-SD	3~400 V, 50 Hz	5 in (")	20	11 kW	≥0.4	Rp 2½	6075210	on request
Sub TWI 6.18-22-C	3~400 V, 50 Hz	5 in (")	22	15 kW	≥0.4	Rp 2½	6075211	on request
Sub TWI 6.18-22-C-SD	3~400 V, 50 Hz	5 in (")	22	15 kW	≥0.4	Rp 2½	6075212	on request
Sub TWI 6.18-24-C	3~400 V, 50 Hz	5 in (")	24	15 kW	≥0.4	Rp 2½	6075213	on request
Sub TWI 6.18-24-C-SD	3~400 V, 50 Hz	5 in (")	24	15 kW	≥0.4	Rp 2½	6075214	on request
Sub TWI 6.18-27-C	3~400 V, 50 Hz	5 in (")	27	15 kW	≥0.4	Rp 2½	6075215	on request
Sub TWI 6.18-27-C-SD	3~400 V, 50 Hz	5 in (")	27	15 kW	≥0.4	Rp 2½	6075216	on request
Sub TWI 6.18-29-C	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥0.4	Rp 2½	6075217	on request
Sub TWI 6.18-29-C-SD	3~400 V, 50 Hz	5 in (")	29	18.5 kW	≥0.4	Rp 2½	6075218	on request
Sub TWI 6.18-31-C	3~400 V, 50 Hz	5 in (")	31	18.5 kW	≥0.4	Rp 2½	6075219	on request
Sub TWI 6.18-31-C-SD	3~400 V, 50 Hz	5 in (")	31	18.5 kW	≥0.4	Rp 2½	6075220	on request
Sub TWI 6.18-33-C	3~400 V, 50 Hz	5 in (")	33	18.5 kW	≥0.4	Rp 2½	6075221	on request
Sub TWI 6.18-33-C-SD	3~400 V, 50 Hz	5 in (")	33	18.5 kW	≥0.4	Rp 2½	6075222	on request
Sub TWI 6.18-36-C	3~400 V, 50 Hz	5 in (")	36	22 kW	≥0.4	Rp 2½	6075223	on request
Sub TWI 6.18-36-C-SD	3~400 V, 50 Hz	5 in (")	36	22 kW	≥0.4	Rp 2½	6075224	on request
Sub TWI 6.18-38-C	3~400 V, 50 Hz	5 in (")	38	22 kW	≥0.4	Rp 2½	6075225	on request
Sub TWI 6.18-38-C-SD	3~400 V, 50 Hz	5 in (")	38	22 kW	≥0.4	Rp 2½	6075226	on request
Sub TWI 6.18-40-C	3~400 V, 50 Hz	5 in (")	40	22 kW	≥0.4	Rp 2½	6075227	on request
Sub TWI 6.18-40-C-SD	3~400 V, 50 Hz	5 in (")	40	22 kW	≥0.4	Rp 2½	6075228	on request
Sub TWI 6.30-02-D	3~400 V, 50 Hz	4 in (")	2	2.2 kW	≥0.4	Rp 3	6091434	on request
Sub TWI 6.30-03-D	3~400 V, 50 Hz	4 in (")	3	3 kW	≥0.4	Rp 3	6091433	on request
Sub TWI 6.30-04-C	3~400 V, 50 Hz	4 in (")	4	3.7 kW	≥0.4	Rp 3	6075231	on request
Sub TWI 6.30-06-C	3~400 V, 50 Hz	4 in (")	6	5.5 kW	≥0.4	Rp 3	6075232	on request
Sub TWI 6.30-08-C	3~400 V, 50 Hz	5 in (")	8	7.5 kW	≥0.4	Rp 3	6075233	on request
Sub TWI 6.30-11-C	3~400 V, 50 Hz	5 in (")	11	11 kW	≥0.4	Rp 3	6075234	on request
Sub TWI 6.30-11-C-SD	3~400 V, 50 Hz	5 in (")	11	11 kW	≥0.4	Rp 3	6075235	on request
Sub TWI 6.30-13-C	3~400 V, 50 Hz	5 in (")	13	15 kW	≥0.4	Rp 3	6075236	on request
Sub TWI 6.30-13-C-SD	3~400 V, 50 Hz	5 in (")	13	15 kW	≥0.4	Rp 3	6075237	on request
Sub TWI 6.30-15-C	3~400 V, 50 Hz	5 in (")	15	15 kW	≥0.4	Rp 3	6075238	on request
Sub TWI 6.30-15-C-SD	3~400 V, 50 Hz	5 in (")	15	15 kW	≥0.4	Rp 3	6075239	on request
Sub TWI 6.30-17-C	3~400 V, 50 Hz	5 in (")	17	15 kW	≥0.4	Rp 3	6075240	on request
Sub TWI 6.30-17-C-SD	3~400 V, 50 Hz	5 in (")	17	15 kW	≥0.4	Rp 3	6075241	on request
Sub TWI 6.30-19-C	3~400 V, 50 Hz	5 in (")	19	18.5 kW	≥0.4	Rp 3	6075242	on request
Sub TWI 6.30-19-C-SD	3~400 V, 50 Hz	5 in (")	19	18.5 kW	≥0.4	Rp 3	6075243	on request
Sub TWI 6.30-21-C	3~400 V, 50 Hz	5 in (")	21	18.5 kW	≥0.4	Rp 3	6075244	on request
Sub TWI 6.30-21-C-SD	3~400 V, 50 Hz	5 in (")	21	18.5 kW	≥0.4	Rp 3	6075245	on request
Sub TWI 6.30-24-C	3~400 V, 50 Hz	5 in (")	24	22 kW	≥0.4	Rp 3	6075246	on request
Sub TWI 6.30-24-C-SD	3~400 V, 50 Hz	5 in (")	24	22 kW	≥0.4	Rp 3	6075247	on request
Sub TWI 6.30-26-C	3~400 V, 50 Hz	5 in (")	26	30 kW	≥0.4	Rp 3	6075248	on request
Sub TWI 6.30-26-C-SD	3~400 V, 50 Hz	5 in (")	26	30 kW	≥0.4	Rp 3	6075249	on request

Wilo-Sub TWI 6

Your advantages

Design

Application

Equipment/function

Typekey

Technical data

Materials

Construction

Scope of delivery

Options

Accessories

Typekey

Technical data

Materials

Construction

Scope of delivery

Options

Accessories

Installation and operating instructions

Wilo-Sub TWI 4-6

Wilo-Sub TWI 4-6

Certification booklet

Wilo-Sub TWI 4, Wilo-Sub TWI 6/TWI 06, Wilo-Sub TWI 8/TWI 08, Wilo-Sub TWI 010

Group Statement

Group Statement REACH

Certificate

Wilo-Sub TWI

RCM

RCM 2223465

RCM 2223484

Rated power P2

Rated power P₂