Star-STG 25/4

Name: Star-STG 25/4
Brand: Wilo
SKU: 4050265

Glandless pump circulator

Article number: 4050265

Series Star-STG

Data sheet

Hydraulic data
Maximum operating pressure PN	10 bar
Min. fluid temperature T_min	-10 °C
Max. fluid temperature T_max	110 °C

Materials
Pump housing	Grey cast iron
Impeller	PP
Shaft	Stainless steel
Bearing	Carbon, metal-impregnated

Motor data
Mains connection	1~230 V, 50 Hz
Rated current I_N	0.21 A
Max. speed n_max	2720 1/min
Power consumption P1(Q=max.) of selected impeller * number of pumps P1	48 W
Emitted interference	EN 61000-6-3
Interference resistance	EN 61000-6-2
Protection class motor	IP44

Installation dimensions
Port-to-port length L0	180 mm

Ordering information

Product data
Brand	Wilo
Product description	Star-STG 25/4
Article number	4050265
EAN number	4016322469650
Colour	Green
Minimum order quantity	1
Date of sales availability	2012-09-01
Successor model article number	4527504
Successor model designation	Yonos PICO-STG 25/1-7.5 PN 10

Packaging
Packaging type	Cardboard box
Packaging property	Sales packaging
Pieces per pallet	180
Number per layer	30

Dimension, weight
Length with packaging	152 mm
Length L	130 mm
Height with packaging	134 mm
Height H	100 mm
Width with packaging	188 mm
Width W	180 mm
Gross weight, approx. m	2.7 kg
Net weight, approx. m	2.6 kg

Glandless circulation pump with special hydraulics for primary circuits in solar and geothermal systems. With manual 3-stage speed connection and blocking-current proof AC motor. Cast iron pump housing with cataphoretic coating. Impeller made of GF polypropylene. Stainless steel shaft with metal-impregnated carbon plain bearings.

Operating data
Min. fluid temperature T_min	-10 °C
Max. fluid temperature T_max	110 °C
Min. ambient temperature T_min	-10 °C
Max. ambient temperature T_max	40 °C
Maximum operating pressure PN	10 bar

Motor data
Emitted interference	EN 61000-6-3
Interference resistance	EN 61000-6-2
Mains connection	1~230 V, 50 Hz
Power consumption P_{1 max}	48 W
Max. speed n_max	2720 1/min
Rated current I_N	0.21 A
Protection class motor	IP44
Threaded cable connection	1 x PG11

Materials
Pump housing	Grey cast iron
Impeller	PP
Shaft	Stainless steel
Bearing	Carbon, metal-impregnated

Installation dimensions
Pump connection	G 1½
Pump connection (alternative designation)	RP 1 DN 25
Port-to-port length L0	180 mm

Ordering information
Brand	Wilo
Product description	Star-STG 25/4
Net weight, approx. m	2.6 kg
Article number	4050265

Mechanical accessories

Pipe installation (3)
Screwed connections/adapters
	Screwed connection Rp 1 x G 1½, 72 Set	112047298	on request
	Screwed connection Rp 1 x G 1½, 1 Set	4092741	on request
	Adapter G 1½/G 2	4105914	on request


Pipe installation, adapter fitting (9)
Threaded adapter R
	Threaded adapter R 2, GG	110626790	on request
	Threaded adapter R 6, GG	110678493	on request
	Threaded adapter R 1, GG	110786891	on request
	Threaded adapter R 7, GG	110787094	on request
	Threaded adapter R 24, GG	110880596	on request

Flanged rings RF
	Flanged ring RF 7, PN6	110628790	on request
	Flanged ring RF 9, PN6	110679395	on request
	Flanged ring RF 13, PN6	110679498	on request
	Flanged ring RF 10, PN6	110851499	on request


Thermal insulation (1)
Size 14 thermal insulation shell
	Thermal insulation shell (Size 14)	4046444	on request

With Wilo as your partner, you can not only be sure of choosing high-quality product solutions, but also of benefiting from a comprehensive, worry-free package of well thought-out services. We collaborate to develop a service concept tailored to your individual needs; with our expertise and personal consultancy, we make sure that the operation of your systems is as energy-efficient, reliable and economical as possible. All the while our competent Wilo service technicians are ready to assist you with fast, reliable and on-time support.

Extended Warranty
	Extended Warranty Glandless pumps	2219589	on request

Supervision
	Supervision Glandless pumps	2219320	on request

Installation
	Installation Glandless pumps	2219355	on request

Commissioning
	Commissioning Glandless pumps	2219390	on request

Maintenance
	Maintenance BASIC Glandless pumps	2219530	on request
	Maintenance COMFORT Glandless pumps	2219416	on request
	Maintenance PREMIUM Glandless pumps	2219545	on request

System Optimisation
	System Optimisation Glandless pumps	2219250	on request

Energy Solutions
	Energy Solutions Glandless pumps	2219285	on request

Repairs
	Repair Glandless pumps	2219609	on request