■ Introduction

FSF-YK micro-flow switch is mainly applied to measure and control the flow of the liquid in the pipe, such as water, alcohol, etc

FSF-YK It is a flow switch with paddles, is designed to protect water cutout in water & heat pump unit

FSF-YK micro-flow switch have SPST switch to ensure it can work fast for the instantaneous protection The product is designed with a special plastic cover with high condense, low influence by heat & cold.

FSF-YK flow switch is fitted with single pole single throw (SPST) connection form, it has the characteristic of reliability, high sensitivity, and correct action, fast action, it is used for ensuring the instantaneous flow switch function.

FSF-YK flow switch is fitted with enhanced engineering plastics design. series flow switches have simple structure, it is easy to use and work stably.

■ Technical Specification

Working environment: -20℃～ +50℃， Relative humidity≤85％ 

Applying medium: Water

Medium temperature: -10℃～ 70℃、pressure no more than1.0MPa

Electrical spec：A.C.220V/8W D.C.24V/0.25A

Level of protection: IP55

Connection: G3/4 (Flare SAE)

Flow inaccuracy: ±10%

Lifetime: Min. 100,000

Gross weight：0.12kg

■ Flow rate

■ Outline drawing

■ Installation

a、When it is working,please check the pipe and make sure where there should not be iron chips and other small

objects, which can be adsorbed by magnet.

b、The switch should be mounted horizontally in a straight pipe (Figure 2)

c、Its ends is at least 5 times the diameter of the straight-line travel (Figure 3)