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Paddle Type Micro Water Flow Switch Single Stage

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Paddle Type Micro Water Flow Switch Single Stage

Country/Region	china
City & Province	nanjing
Categories	Testing Equipment

Product Details

Paddle type water flow switch

Description

The shell of KWFS water flow switch is made of ABS&PC composite material, which has the characteristics of corrosion resistance and high temperature resistance, making it suitable for relatively harsh working environment. At the same time, the protection grade of IP65 makes it effectively protect internal components and prolong the service life of the equipment.

Application

Control and monitor liquid flow of boilers, pumps, etc., of heating, cooling, and air conditioning equipment.

Features

● Flow control of water and normal media
● Renovated SPDT micro switch ensures the reliable switch function
●15(8A)250VAC switch rating
● IP65, class I enclosure
● Set point adjustable
● Stainless steel paddle
●Brass material
● Max. liquid temp 120℃
● Max working pressure 20Ba

Specifications

Type of operation	On/Off,single-stage,micro switch
Output	SPDT 15(8A) 24/250VAC
Flow rates	See flow rate table
Flow rate setting adjustment	Internal screw
Sensing element	Paddle
Liquid applications	Hot, chilled, well, pool and sea water,Brine or ethylene glycol
Parts material in contact with fluid	Brass
Paddle material	Stainless steel
Liquid temperature	-20℃~120℃
Permissible ambient temperature	-40℃~85℃
Permissible ambient humidity	10…90% RH, non-condensing
Cable entry	M18 Fitting
Housing	Fire Resistance ABS or PC
Protection	IP65
Color	White
Weight	1.0Kg

Types of Model

Model	Connection
KWFS-1	1/2" -14 NPT
KWFS-2	3/4" -14 NPT
KWFS-3	1" -11½ NPT

Liquid Flow Rate Table

Line Pipe Size(in.)

1-¼

1-½

2-¼

Min.flow

Flow Increase
①&②Connected

4.2
(1.0)

5.8
(1.3)

7.5
(1.7)

13.7
(3.1)

17.6
(4.0)

27.5
(6.2)

64..7
(14.7)

35.2
(8.0)

125
(28.4)

57.01
(12.9)

190.0
(43.1)

74.0
(16.8)

374.7
(85.1)

204.7
(46.5)

Flow Decrease
①&③Connected

2.5
(0.6)

3.7
(0.8)

5.0
(1.1)

9.7
(2.2)

11.9
(2.7)

19
(4.3)

50.1
(11.4)

26.9
(6.1)

101.1
(22.9)

41.0
(9.3)

158.0
(35.9)

54.0
(12.3)

319.7
(72.6)

170.0
(3806)

Max.flow

Flow Increase
①&②Connected

9.2
(2.1)

13.3
(3.0)

17.6
(4.0)

26.9
(6.1)

30.8
(7.0)

50.2
(11.4)

127.6
(29.0)

81.0
(18.4)

245.0
(55.6)

118.0
(26.8)

374.7
(85.1)

144.0
(32.7)

759.5
(172.5)

415.0
(94.2)

Flow Decrease
①&③Connected

8.1
(2.0)

12.5
(2.8)

16.3
(3.7)

25.1
(5.7)

28.6
(6.5)

47.1
(10.7)

122.0
(27.7)

76.2
(17.3)

234.7
(53.3)

111.0
(25.2)

359.7
(81.7)

134.7
(30.6)

729.6
(165.7)

400.6
(90.8)

Note:
①For flow rates with suffix "Z", the 6 inch paddle must be installed.
②The flow rate unit of the above table is GPM (m /h)

Electrical Wiring

Installation

The flow switch can be installed in every position far from elbows or throttlings, with arrow on flow direction. If pipe is vertical, recalibrate range to balance paddle weight. If the device is downwards mounted, take care to slags and apply it in a straight pipe that is far from filters,valves,etc.,with length at least 5 times the diameter of pipe upstream and downstream the unit.

Note:
The flow switch is factory calibrated at its minimum sensitivity.To increase the set valve,turn the adjustment screw clockwise.The cut-out valve must be ≥the minimum flow necessary to guarantee the protection of the plant.