Description
The Water Flow Sensor Solenoid Valve Integrated Valve is a compact, combined flow measurement and flow control device designed for campus IC card water control systems, dormitory shower metering, and other prepaid water dispensing applications. It integrates a Hall-effect turbine flow sensor and a normally-closed solenoid valve into a single G1/2 (DN15) body, allowing the control system to both measure water volume precisely and start/stop water flow electronically based on card swipes or prepaid balance.
The flow sensor section uses a magnetic turbine rotor and Hall-effect element to generate pulse signals proportional to flow rate. In campus card systems, this pulse output is used for flow-based billing: the controller counts pulses to determine the exact volume dispensed, deducts the corresponding amount from the user’s card balance, and closes the solenoid valve when the card is removed or the balance is exhausted . The integrated design eliminates the need for separate flow sensor and valve plumbing, simplifying installation and reducing leak points.
The device is typically constructed from nylon and glass fiber (for the valve body) or brass (for higher-durability variants), with a G1/2 (DN15) threaded connection compatible with standard 4-point piping . The normally-closed solenoid valve opens when powered and closes automatically on power loss—a fail-safe behavior that prevents water waste during outages .
Critical limitations: This is a low-cost, non-certified device intended for educational and light commercial campus water control applications. The pulse factor (pulses per liter) must match the controller’s billing configuration; an incorrect factor will cause over- or under-charging of users. For revenue-grade billing or safety-critical systems, certified metering devices with manufacturer calibration certificates should be used.
Features
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Integrated Flow Sensor + Solenoid Valve: Combines metering and flow control in a single G1/2 (DN15) body, reducing plumbing complexity and leak points.
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Hall-Effect Pulse Output: Generates digital pulses proportional to flow rate for accurate volume measurement and billing.
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Normally Closed Solenoid Valve: Opens only when powered; closes automatically on power loss, preventing water waste.
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Campus IC Card Compatibility: Designed for prepaid card systems where water is dispensed per swipe and billed by volume.
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G1/2 (DN15) Standard Connection: Compatible with common 4-point piping used in dormitory and campus water systems.
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Wide Voltage Options: Available in DC 12V or 24V variants for different control system architectures.
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Durable Construction: Nylon/fiberglass or brass body for medium-temperature water applications.
Technical Specifications
| Parameter | Specification (per YF-YTF01 / integrated valve data) |
|---|---|
| Model | YF-YTF01 (or equivalent integrated valve) |
| Connection Size | G1/2″ (DN15) |
| Sensor Type | Hall-effect, magnetic turbine |
| Valve Type | Normally Closed (N/C) |
| Operating Voltage | DC 12V / 24V |
| Working Current | 200–400 mA |
| Flow Rate Range | 1–25 L/min (or 1–30 L/min) |
| Pulse Factor | 564 pulses/L; Hz = 9.4 × Q (Q in L/min) |
| Accuracy | ±3% |
| Medium Temperature | 0–60°C (Nitrile); 0–100°C (Silicone) |
| Pressure Range | 0.02–0.8 MPa |
| Service Life | 200,000 cycles |
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