Series description: Wilo-Star-RS

Subject to change without prior notice. www.wilo.com 50 Hz EU 2014-04 1 / 3

DesignGlandless circulation pump with threaded connection. Preselectable speedstages for power adjustment

ApplicationHot-water heating systems of all kinds, industrial circulation systems, coldwater systems and air-conditioning systems

Type keyExample: Wilo-Star-RS 25/4

Star-RS Standard pump (screw-end pump)

25/ Nominal connection diameter Rp

4 Nominal delivery head [m] at Q = 0 m3/ h

Special features/product advantagesSuitable for any installation position with horizontal shaft; terminal boxin 3-6-9-12 o'clock position

•

Three preselectable speed stages for load adjustment•Easy and safe installation due to practical wrench attachment point onpump body

•

Simplified electrical installation due to terminal box with removablethreaded cable connection that can be used on both sides; Quickconnection with spring clips

•

Technical dataPermissible temperature range -10°C to +110°C•Mains connection 1~230 V, 50 Hz•Protection class IP 44•Threaded connection Rp ½, Rp 1 or Rp 1¼•Max. operating pressure 10 bar•

Equipment/functionOperating modes

Speed-stage switching•Manual functions

Setting of speed stages (3 speed stages)•Equipment

Wrench attachment point on pump body•Cable lead-in possible on both sides•Quick connection with spring clips•Blocking current-proof motor•

MaterialsPump housing: Grey cast iron•Impeller: Plastic•Shaft: stainless steel•Bearing: Carbon, metal impregnated•

Scope of deliveryPump•Seals•Installation and operating instructions•

OptionsVersion ...RG with housing made of red brass•Version ... -130 with short overall length of -130 mm•

AccessoriesScrewed connections•Adapter fittings•Thermal insulation shells•

Duty chart: Wilo-Star-RS

Subject to change without prior notice. www.wilo.com 50 Hz EU 2014-04 2 / 3

Pump curves

0

1

2

3

4

5

6

7

H[m]

0 1 2 3 4 5 Q[m³/h]

Star-RS 15/6, 25/6, 30/6

Star-RS 25/8, 30/8

Star-RS 15/4, 25/4, 30/4

Star-RS 25/7, 30/7

Star-RS 25/2, 30/2

Wilo-Star-RS

Product list: Wilo-Star-RS

Subject to change without prior notice. www.wilo.com 50 Hz EU 2014-04 3 / 3

Type Max.volume

flow

Max.delivery

head

Thread Threadedpipe union

Ratedpressure

Overalllength

Mainsconnection

Grossweight

Pieces perpallet

Art no.

Qmax / m3/h Hmax / m PN / bar L0 / mm m / kg

Star-RS 15/4 4 4 G 1 Rp ½ 10 1301~230 V, 50

Hz2,2 280 4063802

Star-RS 15/5-130 3 5 G 1 Rp ½ 10 1301~230 V, 50

Hz2,3 4067514

Star-RS 15/6 4 6 G 1 Rp ½ 10 1301~230 V, 50

Hz2,3 280 4063803

Star-RS 25/2 2 2 G 1½ Rp 1 10 1801~230 V, 50

Hz2,5 256 4032952

Star-RS 25/4-130 4 4 G 1½ Rp 1 10 1301~230 V, 50

Hz2,3 280 4033776

Star-RS 25/4-RG 4 4 G 1½ Rp 1 10 1801~230 V, 50

Hz2,7 256 4035758

Star-RS 25/4 4 4 G 1½ Rp 1 10 1801~230 V, 50

Hz2,5 256 4032954

Star-RS 25/5 3 5 G 1½ Rp 1 10 1801~230 V, 50

Hz2,7 4065366

Star-RS 25/6-130 4 6 G 1½ Rp 1 10 1301~230 V, 50

Hz2,5 280 4033782

Star-RS 25/6-RG 4 6 G 1½ Rp 1 10 1801~230 V, 50

Hz2,8 256 4035761

Star-RS 25/6 4 6 G 1½ Rp 1 10 1801~230 V, 50

Hz2,7 256 4032956

Star-RS 25/7 5 7 G 1½ Rp 1 10 1801~230 V, 50

Hz2,9 256 4037310

Star-RS 25/8 6 8 G 1½ Rp 1 10 1801~230 V, 50

Hz3,6 140 4094258

Star-RS 30/2 2 2 G 2 Rp 1¼ 10 1801~230 V, 50

Hz2,7 256 4033760

Star-RS 30/4 4 4 G 2 Rp 1¼ 10 1801~230 V, 50

Hz2,7 256 4033765

Star-RS 30/6 4 6 G 2 Rp 1¼ 10 1801~230 V, 50

Hz2,8 256 4033770

Star-RS 30/7 5 7 G 2 Rp 1¼ 10 1801~230 V, 50

Hz3,0 256 4037311

Star-RS 30/8 6 8 G 2 Rp 1¼ 10 1801~230 V, 50

Hz3,7 140 4094375