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[China]
Trade Verify
Address: Suite 701, East Tower of Jin Run Intl Plaza, No.81, Nanxijiang Dong Street, Nanjing, China
Contact name:Martin
Keram (Nanjing)ELECTRICAL Equipment Co., Ltd. |
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KWFS water flow switch is a device for automatic control and protection of water flow. When the water flow changes, the force generated by the water flow on the target makes the lever rotate and the control circuit close or open, thus achieving the purpose of automatic control. Water flow switch is widely used in the water system of water chiller and air conditioning engineering. It can ensure the safe and efficient operation of air conditioning system.
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 13.5Ba
| 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 |
| Line Pipe Size(in.) | 1 | 1-¼ | 1-½ | 2 | 2-¼ | 3 | 4 | 4Z | 5 | 5Z | 6 | 6Z | 8 | 8Z | |
| Min.flow | Flow Increase | 4.2 | 5.8 | 7.5 | 13.7 | 17.6 | 27.5 | 64..7 | 35.2 | 12.5 | 57.01 | 90.0 | 74.0 | 374.7 | 204.7 |
Flow Decrease | 2.5 | 3.7 | 5.0 | 13.7 | 11.9 | 19 | 50.1 | 26.9 | 101.1 | 41.0 | 158.0 | 54.0 | 319.7 | 170.0 | |
| Max.flow | Flow Increase | 9.2 | 13.3 | 17.6 | 26.9 | 30.8 | 50.2 | 127.6 | 81.0 | 245.0 | 118.0 | 374.7 | 144.0 | 759.5 | 415.0 |
Flow Decrease | 8.1 | 12.5 | 16.3 | 25.1 | 28.6 | 471 | 122.0 | 76.2 | 234.7 | 111.0 | 359.7 | 134.7 | 729.6 | 400.6 | |
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)
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.
| Install Paddle | |
| Pipe | NO. |
| 1" | 1 |
| 11/4" | 1 |
| 11/2" | 1 |
| 2" | 1,2 |
| 21/2" | 1,2 |
| 3" | 1,2,3 |
| 4" | 1,2,3 |
| 4"Z | 1,2,3,4 |
| 5" | 1,2,3 |
| 5"Z | 1,2,3,4 |
| 6" | 1,2,3 |
| 6"Z | 1,2,3,4 |
| 8" | 1,2,3 |
| 8"Z | 1,2,3,4 |
