Import Fixed Set Point Differential Pressure Flow — Buy in Bulk from Supplier in China
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Fixed set point differential pressure flow
The Fixed set point differential pressure flow switch from Acol (Shanghai) Online Controls Co., Ltd. is a mechanical device designed to monitor liquid flow in HVAC, plumbing, and heat exchanger systems by detecting pressure differentials across a flow path. The model WFS10004AA activates a dry contact relay when the pressure difference reaches a preset threshold of 4 kPa, signaling flow presence or absence without requiring external power.
The switch uses a diaphragm and spring mechanism calibrated to respond to pressure changes between 0 and 5 bar differential, with a hysteresis of 1.2 kPa to prevent relay chatter. It operates within a media temperature range of -20°C to 93°C and can withstand a maximum static pressure of 10 bar. The SPDT contact is rated for 10A at 250V AC, suitable for direct control of pumps or valves. The housing is made of corrosion-resistant polymer, typical for inline flow switches in commercial water systems.
This device is commonly used in plate and shell-and-tube heat exchangers to prevent frost damage or efficiency loss due to low flow. Buyers include OEMs of HVAC equipment, industrial boiler manufacturers, and building automation integrators. The unit is supplied as a single piece with 13 cm x 10 cm x 11 cm dimensions and weighs 0.65 kg. Trade terms are typically EXW Shanghai or FOB Shanghai, with lead times of 2 to 3 weeks. Packaging is in retail boxes with ESD protection for sensitive electronics.
| Model number | WFS10004AA |
| Set point | 4 kPa |
| Hysteresis | 1.2 kPa |
| Max. pressure difference | 5 bar |
| Max. static pressure | 10 bar |
| Operating temperature range | -20°C to 93°C |
| Storage temperature range | -29°C to 82°C |
| Ambient temperature range | -20°C to 71°C |
| Output type | SPDT dry contact |
| Contact rating | 10A max, 125/250V AC |
| Set point repeatability | ±1% |
| Media type | Liquid |
| Package dimensions | 13 cm x 10 cm x 11 cm |
| Package weight | 0.65 kg |
Acol (Shanghai) Online Controls Co., Ltd. is based in Shanghai, China, and specializes in flow and pressure control devices for OEM applications. The company does not publish its history, employee count, or annual production volume. The listing confirms manufacturing capability through detailed technical documentation and product model numbering consistent with industrial control standards. No certifications such as ISO 9001 or CE are mentioned.
The supplier is classified as 'imported' and 'harbor' tier, indicating past export activity but no verified buyer feedback or response metrics on the platform. The listing includes application-specific use cases for heat exchangers and pump monitoring, suggesting engineering focus rather than broad retail distribution. Buyers should request test reports for set point accuracy and contact endurance under load before committing to bulk orders.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Sourcing Fixed set point differential pressure flow from Acol (Shanghai) Online Controls Co., Ltd. - China Import Guide
Before ordering, confirm the set point matches your system’s required flow protection threshold - typically 4 kPa for plate heat exchangers or 7 kPa for shell-and-tube units. Request a copy of the factory calibration certificate and verify the contact rating matches your control circuit load. Do not assume the switch is compatible with high-pressure steam or non-water media without explicit confirmation.
Confirm Incoterms with the supplier - EXW Shanghai is standard. Lead time is typically 2 to 3 weeks, and payment is usually 50% advance, 50% against copy of bill of lading. Ensure packaging includes anti-static foam and moisture barrier, as the internal electronics are sensitive. Export documentation must include a commercial invoice with HS code 9026.20 for flow switches.
Perform incoming inspection by verifying the model number matches the label, checking for physical damage, and testing the relay output with a multimeter under simulated pressure. Confirm the set point using a calibrated pressure gauge and flow loop. Retain a sample unit for reference. Request an English-language datasheet and installation guide. Document all findings before accepting shipment.
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30 suppliersBuy & Import Fixed Set Point Different — Wholesale Supply from China
Securing a reliable supply chain for Fixed Set Point Differential Pressure Flow is critical for maintaining your business operations. Acol (Shanghai) Online Controls Co., Ltd., a verified supplier located in China, provides high-quality Fixed Set Point Different ready for international export. By connecting directly with this supplier, buyers can bypass intermediaries, negotiate custom wholesale pricing, and arrange bulk shipments. This product is a key offering within the Products industry, catering to distributors, wholesalers, and importers worldwide.
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About Acol (Shanghai) Online Controls Co., Ltd. — Verified Supplier in China
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International Shipping & Import Guidelines for Fixed Set Point Different
When importing Fixed Set Point Different from China, buyers should consider shipping terms (FOB, CIF, EXW), customs documentation requirements, and payment security. Contact the supplier to discuss the best logistics options for your destination country.
Frequently Asked Questions About Fixed Set Point Different
How can I get the wholesale price for Fixed Set Point Differential Pressure Flow?
Click the "Request Quotation" button to contact Acol (Shanghai) Online Controls Co., Ltd. directly. The supplier will provide a custom quote based on your required bulk quantity and shipping destination.
Can I buy Fixed Set Point Different in bulk from China?
Yes, Acol (Shanghai) Online Controls Co., Ltd. provides Fixed Set Point Different for bulk export from China. You can negotiate the MOQ, packaging details, and shipping terms directly with the supplier.
What shipping terms are available for this product?
Shipping terms such as FOB, CIF, or EXW can be negotiated directly with Acol (Shanghai) Online Controls Co., Ltd.. Contact the supplier to discuss the best logistics options for importing Fixed Set Point Different to your country.
How do I request a sample of Fixed Set Point Differential Pressure Flow?
Send a direct message to Acol (Shanghai) Online Controls Co., Ltd. through our platform to request a product sample before committing to a large wholesale order.
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Acol (Shanghai) Online Controls Co., Ltd. is a registered and verified supplier on EximNext. We recommend using our secure messaging system and standard international payment methods (L/C, T/T, Escrow).
What specifications should I ask for when importing Fixed Set Point Different?
Request a detailed product data sheet including grade, purity, dimensions, material composition, and applicable industry standards from Acol (Shanghai) Online Controls Co., Ltd..
Does Acol (Shanghai) Online Controls Co., Ltd. offer custom packaging or private labeling?
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