YWFS21 baffle type flow switchDetailed product description：

YWFS21 is a baffle type flow switch, with the baffle made of stainless steel and the body made of H59 brass (optional stainless steel). Its performance is superior to traditional target flow switches. All products are supplied in an insertable structure with G1/2 "connecting threads. According to user requirements, various corrosion-resistant materials can be used for production, and small pipes can also be equipped with tees. The flow rate is set according to the requirements, and the products are supplied in a flow-through structure.

The YWFS21 series of low-cost and high reliability baffle type flow switches from EUWEN are the preferred products for flow protection for customers.

Technical parameters:

Environmental temperature: -40-90 ℃
Installation position: The direction of the arrow on the shell is the direction of the medium flow
Medium temperature: -40-150 ℃
Installation pipeline diameter: DN15~DN150
Contact capacity: AC250V 0.5A (resistive) converted to a pair of normally open and normally closed nodes
Pressure resistance: 16 bar (25 bar optional)
Connection thread: G1/2 "tapered pipe thread or other size
Protection standard: IP65
Working medium: water and oil (please specify other media such as seawater when ordering)
Average pressure loss: 0.01 bar at maximum flow rate
Cable: Standard configuration 1.0m, 2X0.5mm2
Shell protection level: IP65

Installation location:

1. The connecting thread is a 1/2 "tapered pipe thread. Wrap more PTFE tape around the threads during installation.
2. The blocking plate and the flow direction of the medium are consistent.
3. There should be a long straight pipe section before and after the flow switch, greater than 5 times the pipe diameter.
4. If it is necessary to cut the baffle on site, attention should be paid to the value of the tee to ensure that more than 2/3 of the baffle is inserted into the pipeline.

Setting of switch points:

If the user requires precise setting of switch points, please inform the factory at the time of purchase for calibration. When the reed switch (black plastic part) moves against the direction of water flow, the action value increases (i.e. requires a larger flow to open the switch), and vice versa, the action value decreases. After adjustment, lock the screws securely. After obtaining the traffic switch, users can familiarize themselves with the operation process of the switch before setting it. When the switch has not been installed on site, move the baffle by hand, adjust it, and repeat to verify whether the switch point setting is accurate. To monitor whether the switch is activated, a multimeter can be connected to the switch circuit to determine if the action has occurred.

YWFS21 series flow switch flow meter unit: liter/minute

pipe size	connect	cut off	Remark
DN15	nine point eight	eight point seven
DN20	eleven point seven	ten point two
DN25	eighteen point two	seventeen
DN32	twenty-three point five	twenty-one point two
DN40	thirty-one	twenty-nine point one
DN50	thirty-six	thirty-four point four

Dimensional drawing: