F-1 type flow switchDetailed product description：

Overview
The F-1 type flow switch is used for controlling or blocking fluid flow in pipelines. When the fluid flow reaches the set value, the switch automatically cuts off (or connects) the circuit;
The flow control value can be set;
Applicable media include water, oil, ethylene glycol, or other non hazardous liquids
The joints are standard NPT 1-inch pipe threads and other special specification pipe threads
The maximum working pressure is 10 bar
Equipped with 5 flow plates and pipes of various diameters
Medium temperature: 0~+120 ℃

Technical data for F-1 type flow switch

model Model	Piping size connecting size (inch)	Flow regulation range during switch action Flow range (Liter / min)
		Minimum adjustment		Maximum adjustment
		Decreased traffic Flow decreasing	Traffic increase Flow increasing	Decreased traffic Flow decreasing	Traffic increase Flow increasing
F-1	one	eighteen	twenty-one	forty-five	fifty
	1-1/2	thirty	thirty-five	one hundred	one hundred and five
	two	fifty	fifty-eight	one hundred and fifty	one hundred and fifty-five
	2-1/2	seventy-five	eighty-six	one hundred and eighty-seven	two hundred
	three	one hundred	one hundred and fifteen	two hundred and twenty-five	two hundred and sixty
	four	one hundred and ten	one hundred and fifty-four	three hundred and seventeen	three hundred and thirty-seven
	five	one hundred and seventy	two hundred and thirty-six	four hundred and sixty-two	four hundred and ninety
	six	two hundred and twenty-five	three hundred and eight	five hundred and sixty-two	five hundred and ninety-nine
	eight	seven hundred and seven	eight hundred and fifty-four	one thousand six hundred and sixty-four	one thousand seven hundred and twenty-seven

Electrical data

Rated Voltage supply voltage(V) rated current operating current (A)		Power Supply COSф	125V AC	250V AC
Non induction current (A)		one	fifteen	fifteen
Induction current (A)	Constant current	zero point seven five	three point five	two point five
	Instantaneous current transient	zero point seven five	twenty-one	fifteen

Installation rules
Select the corresponding size of flow plate according to the piping size and install the whole machine. To prevent damage to the flow plate caused by abnormal liquid flow impact, it is recommended to install an adjacent size of flow plate on the opposite side of the flow receiving surface of the corresponding size of flow plate.  
The flow controller must be installed on a straight pipeline, with a distance of at least five times the diameter of the pipe between its two ends.  
When screwing in the tee, the wrench must be operated on a flat surface specifically designed for use with the wrench. It is not allowed to grip the shell for installation.  
After tightening the flow controller, the flow direction plate must be at the correct angle with the liquid flow, the arrow on the housing should be consistent with the flow direction, and the flow direction plate must not come into contact with the pipeline or any throttling device in the pipeline.  
When a quick closing valve is installed downstream of the flow controller, a suitable throttle must be used.  
The flow controller should be installed on a horizontal pipeline or a vertical pipeline with an upward flow direction, and cannot be installed in a pipeline with a downward flow direction.  
The flow controller has been set at the minimum flow value in the factory, and should not be adjusted below this value during use, otherwise the switch cannot be restored.

Switch Function Diagram
Above the set point, when the flow increases, the switch action is as shown in the figure on the right,


Common faults and troubleshooting solutions

Phenomena and Problems Trouble	Elimination methods Solution
Damaged corrugated pipe with liquid leakage Bellows is damaged, liquid is leaking	exchange Replacement
The mechanical part is stuck by debris and the switch does not operate Mechanism is locked by scraps, switch fails to act	Remove debris Wipe out the scraps
Reverse or no action of control switch Switch reverse action or no action	Check the wiring and whether the contacts are reversed View on wiring to see if exists wrong wiring
The control switch operates when there is liquid flow, but cannot reset when there is no liquid flow	Ensure liquid upwards and arrow on enclosure upwards on the vertical line on the vertical pipeline, with the arrows pointing upwards towards the outer shell
The switch does not operate when the traffic increases When flow increasing, switch does not act	Check if there are cracks or fractures in the flow direction sheet,

Dimensions of F-1 type flow switch

Paddle NO.	A (mm)	B(mm)
one	thirty-five	twenty-seven
two	sixty	twenty-seven
three	eighty-eight	twenty-seven
four	one hundred and twenty-one	twenty-seven
five	one hundred and fifty	twenty-seven

Ordering Instructions
When leaving the factory, connect according to the form, size, and small flow rate setting value shown in the diagram Delivery
The flow rate in the technical parameters is provided as a reference for selection.
If there are any other special requirements such as takeover form and size, please raise them when ordering