LF52 Water Flow Adjustable Differential Pressure Switch, Central air conditioning water flow differential pressure switch
ZHEJIANG LEFOO CONTROLS CO., LTD.
See what’s includedHide breakdown
- FOB goods (100)
- $3,333
- Ocean freight + handling (0.30 CBM)
- $820
- US duty (2.7%)
- $90
- Section 301 tariff (25.0%)
- $833
- Customs fees (MPF/HMF)
- $37
Estimate in USD to a US port using category averages (HTS 8536/8504/8507), rates as of 2026-09. Other countries on request. A quote from your agent uses real carton sizes, freight and the exact tariff line.
- FOB goods (100)
- $3,333
- Ocean freight + handling (0.30 CBM)
- $820
- US duty (2.7%)
- $90
- Section 301 tariff (25.0%)
- $833
- Customs fees (MPF/HMF)
- $37
Estimate in USD to a US port using category averages (HTS 8536/8504/8507), rates as of 2026-09. Other countries on request. A quote from your agent uses real carton sizes, freight and the exact tariff line.
Verify from $29 · written report in 3 business days · 100% refund if not satisfied
LF52 Water Flow Adjustable Differential Pressure Switch, Central air conditioning water flow differential pressure switch
ZHEJIANG LEFOO CONTROLS CO., LTD.See what’s includedHide breakdown
- FOB goods (100)
- $3,333
- Ocean freight + handling (0.30 CBM)
- $820
- US duty (2.7%)
- $90
- Section 301 tariff (25.0%)
- $833
- Customs fees (MPF/HMF)
- $37
Estimate in USD to a US port using category averages (HTS 8536/8504/8507), rates as of 2026-09. Other countries on request. A quote from your agent uses real carton sizes, freight and the exact tariff line.
- FOB goods (100)
- $3,333
- Ocean freight + handling (0.30 CBM)
- $820
- US duty (2.7%)
- $90
- Section 301 tariff (25.0%)
- $833
- Customs fees (MPF/HMF)
- $37
Estimate in USD to a US port using category averages (HTS 8536/8504/8507), rates as of 2026-09. Other countries on request. A quote from your agent uses real carton sizes, freight and the exact tariff line.
Verify from $29 · written report in 3 business days · 100% refund if not satisfied
About this product
- Size: 93*89
- Color: Black
- Exports to: Mainland China, Africa, Middle East, Southeast Asia, South Asia, Central Asia, USA and Canada, Latin America, Russia, EU, Other European Countries, Japan and South Korea, Hong Kong China, Macao China and Taiwan China, Others
- Made in: Zhejiang, China
About this product
- Size: 93*89
- Color: Black
- Exports to: Mainland China, Africa, Middle East, Southeast Asia, South Asia, Central Asia, USA and Canada, Latin America, Russia, EU, Other European Countries, Japan and South Korea, Hong Kong China, Macao China and Taiwan China, Others
- Made in: Zhejiang, China
Product details
| Size | 93*89 |
|---|---|
| Color | Black |
Product details
| Size | 93*89 |
|---|---|
| Color | Black |
From the supplier
This adjustable differential pressure switch LF52 is developed for sparingly using in different differential value requirements. It is widely applied for detecting the differential of water filter, pump, heat exchanger, chillers and its coil units.
When the water flowing (differential) decrease or increase to the setting point, there will be an alarm or cut off output signal for the self-controlling system. It’s also available for indicating the status of pump or water filter.
Double differential settings pressure switch can take the replacement of the vane flow switch and avoid changing the vane flow switch from chillers each year.
Reference standard
1. UL508
2. GB14048-2000 ( Low voltage switchgear and control equipment general provision )
3. GB14048.5-2000 (Low voltage switchgear and control equipment, part 5-1 Control equipment and switching elements )
4. ROHS certificate.
Data sheet
1. Media: Non hazardous media such as water, air, oil etc…
2. Contact arrangement: SPDT(micro switch)
3. Electrical rating: 3A 250VAC
4. Working pressure
Working pressure Range
Model
Pressure
Differential
52-15
5-15kPa
3kPa
52-30
5-30kPa
3kPa
52-70
6-70kPa
5kPa
52-100
6-100kPa
6kPa
52-200
10-200kPa
10kPa
52-300
20-300kPa
15kPa
52-400
30-400kPa
20kPa
5.Storage temperature: -29°C - 82°C
6. Ambient temperature: -20°C - 71°C
7. Media temperature: -20°C - 93°C
8. High and low pressure connections: 1/4"SAE(7/16"-20UNF), NPT1/4" brass
9 Maximum static pressure: 10/16/20bar
10.Maximum differential: 10/16/20bar
11. Setting repeatability tolerance: ±1%
12. Protection Grade: IP54
13.Electrical endurance: 30000 cycles
14. Mechanical endurance: 100000 cycles
15. Contact resistance:≤100mΩ
16. Insulation resistance: ≥10MΩ
17. Dielectrical property: No breakdown and flashover phenomena under 1200V for one minute.
18. Material: Outlet hole, low pressure side, high pressure side, pressure adjusting screw
From the supplier
This adjustable differential pressure switch LF52 is developed for sparingly using in different differential value requirements. It is widely applied for detecting the differential of water filter, pump, heat exchanger, chillers and its coil units.
When the water flowing (differential) decrease or increase to the setting point, there will be an alarm or cut off output signal for the self-controlling system. It’s also available for indicating the status of pump or water filter.
Double differential settings pressure switch can take the replacement of the vane flow switch and avoid changing the vane flow switch from chillers each year.
Reference standard
1. UL508
2. GB14048-2000 ( Low voltage switchgear and control equipment general provision )
3. GB14048.5-2000 (Low voltage switchgear and control equipment, part 5-1 Control equipment and switching elements )
4. ROHS certificate.
Data sheet
1. Media: Non hazardous media such as water, air, oil etc…
2. Contact arrangement: SPDT(micro switch)
3. Electrical rating: 3A 250VAC
4. Working pressure
Working pressure Range
Model
Pressure
Differential
52-15
5-15kPa
3kPa
52-30
5-30kPa
3kPa
52-70
6-70kPa
5kPa
52-100
6-100kPa
6kPa
52-200
10-200kPa
10kPa
52-300
20-300kPa
15kPa
52-400
30-400kPa
20kPa
5.Storage temperature: -29°C - 82°C
6. Ambient temperature: -20°C - 71°C
7. Media temperature: -20°C - 93°C
8. High and low pressure connections: 1/4"SAE(7/16"-20UNF), NPT1/4" brass
9 Maximum static pressure: 10/16/20bar
10.Maximum differential: 10/16/20bar
11. Setting repeatability tolerance: ±1%
12. Protection Grade: IP54
13.Electrical endurance: 30000 cycles
14. Mechanical endurance: 100000 cycles
15. Contact resistance:≤100mΩ
16. Insulation resistance: ≥10MΩ
17. Dielectrical property: No breakdown and flashover phenomena under 1200V for one minute.
18. Material: Outlet hole, low pressure side, high pressure side, pressure adjusting screw
About the supplier
Main products: Other sensors,Differential pressure transmitter,Switch,Other Pumps,Safety Breaker
- ✓Exhibited at 10 of the last 10 Canton Fairs
- ✓Manufacturer
- ✓Founded 2000
- ✓Canton Fair Premium Supplier
- ✓National high-tech enterprise
- ✓1 certificate on file
Light & Electrical exhibitors show in Phase 1 of the Canton Fair, 15 to 19 October 2026.
- Exhibited at 10 of the last 10 Canton Fairs
- Manufacturer
- Founded 2000
- Canton Fair Premium Supplier
More from ZHEJIANG LEFOO CONTROLS CO., LTD.
