Keram (Nanjing)ELECTRICAL Equipment Co., Ltd.
| Payment Terms | L/C, T/T |
| Supply Ability | 2000pics/month |
| Delivery Time | 7days |
| Packaging Details | Package |
| Output | SPDT 15(8A) 24/250VAC |
| Flow rates | See flow rate table |
| Liquid applications | Hot, chilled, well, pool and sea water,Brine or ethylene glycol |
| Parts material in contact with fluid | Brass |
| Brand Name | KeramControls |
| Model Number | KWFS |
| Certification | CE |
| Place of Origin | China |
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Product Specification
| Payment Terms | L/C, T/T | Supply Ability | 2000pics/month |
| Delivery Time | 7days | Packaging Details | Package |
| Output | SPDT 15(8A) 24/250VAC | Flow rates | See flow rate table |
| Liquid applications | Hot, chilled, well, pool and sea water,Brine or ethylene glycol | Parts material in contact with fluid | Brass |
| Brand Name | KeramControls | Model Number | KWFS |
| Certification | CE | Place of Origin | China |
| High Light | DN20 Electric Ball Valve ，IP66 Waterproof Electric Ball Valve | ||
Brass water flow switch for water pump
KWFS liquid flow switch is a micro switch that transmits signals to achieve the purpose of controlling liquid flow.It is a pressure-triggered quick switch, also known as a sensitive switch. Its working principle is: the external mechanical force acts on the action reed through the transmission element, and after the energy is accumulated to the critical point, an instantaneous action is generated, so that the moving contact and the fixed contact at the end of the action reed are quickly connected or disconnected. open. When the force on the transmission element is removed, the action reed produces a reverse action force. When the reverse stroke of the transmission element reaches the critical point of the action of the reed, the reverse action is completed instantaneously. The contact distance of the micro switch is very small, and it has the characteristics of short action stroke, small pressing power, and rapid on-off.
It can be used in the field of HVAC, as well as heat pumps. It is made of stainless steel, and the medium temperature can reach -20~120℃.
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
| 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 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)
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 |
1 Q: What's the delivery time?
A: According to the specification and quantity of your order, generally 4
days for normal standard products within 10pcs.
2 Q:Are you manufacturer or trading company?
A: We are manufacturer with many years of experience.We have our
own factory.Welcome to visit our factory.
3 Q: Can we use our logo on the products?
A: Yes.We can provide OEM service.
4 Q: Do you have products with ex-proof certificate?
A: Yes,we can offer intrinsic-safety and flame proof certificates.
5 Q: What is the warranty of your products?
A: Normal is 12 months.
6 Q: What's the means of transport?
A: Express such as TNT,Fedex,DHL,UPS, or logistics by indicator.
Company Details
Business Type:
Manufacturer
Year Established:
1998
Total Annual:
2000000-3000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Nanjing Qiyuan Controls & Equipment Co., Ltd. was found in 1998. In 2005, the number of the employees increased to more than 100. In 2006, its manufacturing base was moved to Huai An Industrial Development Zone. Keram Controls has obtained the investment from Keram Group in 2009. In ... Nanjing Qiyuan Controls & Equipment Co., Ltd. was found in 1998. In 2005, the number of the employees increased to more than 100. In 2006, its manufacturing base was moved to Huai An Industrial Development Zone. Keram Controls has obtained the investment from Keram Group in 2009. In ...
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