Dwyer Series FS-2 Flow Switch – Forged Brass Body, Heat Resistant up to 110°C

Alongside differential pressure sensors, Flow Switches serve as the ultimate mechanical safety interlock protecting expensive pumping and Chiller systems. The paddle-type Dwyer Series FS-2, featuring a robust forged brass body, operates flawlessly under high pressure and temperature conditions, making it the preferred choice for industrial M&E contractors.

Dwyer Series FS-2 Flow Switch - Distributed by DLK

1. Structural Analysis of the Dwyer Series FS-2

Unlike cheap plastic or cast-iron alternatives prone to cracking, the Dwyer FS-2 is engineered for an extended operational lifespan using premium materials:

• Forged Brass Body: Withstands high static pressure, offering exceptional leak prevention and corrosion resistance in circulating cooling water environments.
• Stainless Steel Vane: The multi-layer, trimmable paddle fits pipe diameters from 1 inch up to 8 inches (or larger), eliminating the risk of rust or snapping off into the pipeline.
• IP64 (NEMA 4) Enclosure: Protects the electrical contact assembly from splashing water and industrial dust, ensuring absolute safety for outdoor installations.
• High-Temperature Tolerance: Operates stably with fluid temperatures up to 110°C (230°F), ideal for both boiler systems and hot water pump applications.

2. Technical Specifications

3. Applications and Protection Mechanism

Mechanism: Flowing fluid tilts the paddle, activating the internal electrical switch. Upon flow loss (dry-running), a tension spring returns the paddle, instantly breaking the signal circuit.

• Chiller Protection: Sends an immediate shutdown signal to Chiller compressors if the chilled water pump fails, preventing catastrophic evaporator freezing.
• Pump Protection: Prevents dry-running, avoiding mechanical seal and motor winding burnouts.
• Auxiliary Activation: Automatically triggers water treatment chemical dosing systems only when water is actively flowing.

4. Order Genuine Dwyer FS-2 from DLK

Contact DLK today to equip your high-value systems with this ultimate mechanical shield. We guarantee 100% genuine Dwyer products with complete import documentation for seamless project handover.