Wilo star s21 rfc 3 speed hydronic circulator pump with rotating flanges
Wilo star s21 rfc 3 speed hydronic circulator pump with rotating flanges 2 150x150
Wilo star s21 rfc 3 speed hydronic circulator pump with rotating flanges 3 150x150
Wilo star s21 rfc 3 speed hydronic circulator pump with rotating flanges 4 150x150
Wilo star s21 rfc 3 speed hydronic circulator pump with rotating flanges 5 150x150

Wilo Star S21 RFC 3-Speed Hydronic Circulator Pump with Rotating Flanges — 4171560

SKU: 4171560

$450.00
Stock: 3 units

Description

  • The Wilo Star S21 RFC 3-Speed Hydronic Circulator Pump is a commercial-grade, wet-rotor glandless inline water circulator masterfully engineered to regulate fluid velocity across demanding residential and light commercial closed-loop heating applications.
  • Fabricated with a heavy-duty cast iron pump housing, this versatile 115V circulator utilizes an innovative wet-rotor assembly where the fluid matrix continuously cools and lubricates internal mechanical components, achieving an incredibly whisper-quiet performance threshold inside sound-sensitive residential utility spaces.
  • The system features a manual three-speed rotary toggle switch that allows mechanical contractors to self-adjust volumetric outputs up to an 18 GPM flow rate or a maximum 21-foot dynamic head lift to accurately align with complex space zoning parameters.
  • Complete with built-in thermal safety motor protection, unique multi-angle rotating connection flanges, a removable check valve, and premium sealing gaskets, the 4171560 kit cuts field assembly time while ensuring long-term resistance to scale accumulation and internal mechanical seizing failures.

Specifications

Manufacturer / Brand

Wilo USA

Product Line / Series

Star® Series Glandless Wet-Rotor Circulators

Manufacturer Part Number / Master SKU

4171560

UPC

4048482088891

ASIN

B07RM5MPL2

Supply Voltage Interface

115 VAC, Single Phase (1 PH), 60 Hz

Motor Design Profile

Glandless / Wet-Rotor induction design

Number of Speeds

3-Speed manual rotary toggle switch selector

Maximum Dynamic Head Lift

21 Feet (6.4 meters / 9.1 PSI absolute shut-off threshold)

Maximum Volumetric Flow Rate

18 GPM (Gallons Per Minute)