What is a hands-free spigot?- Boda Electrical Appliances Co.,Ltd

What is a hands-free spigot?

13 | Oct 2025

Touchless Spigot Teardown

I. Essential Definition

Non-contact Trigger
Sensing Range: Automatically dispenses water when a hand or object enters the 5-15cm detection zone (slaughterhouse version can be triggered by a kick)
Preventing Accidental Activation: Built-in moving object recognition algorithm (instantaneous insects will not activate)
Valveless Design
Eschewing the traditional handwheel → Solenoid coil directly pushes the valve stem (ultra-fast 0.3-second response)

II. Core Structure Revealed

Component	Backyard Rig	Industrial Survival Guide
Sensing Probe	Cheap IR beam sensors ($10 grade)	Microwave radar sensor (ignores grease/grime interference)
Power Core	4x AA batteries (rookie setup)	24V safe voltage (survives slaughterhouse pressure washing)
Valve Actuator	Basic solenoid (jams often)	Hydraulic-assisted piston (eats mud/sludge for breakfast)
Manual Override	Hidden hex port (needs specialty key)	Exposed impact switch (elbow smash / sledgehammer tap forces open)

III. Bloody Application Scenarios

Auto Repair Shop Bully: Elbow-bump a full phone to release water
Incinerator Lifesaver: Zero-Contact Operation in Radiation Zones
Plague Lab: Prevent Cross-Infection of Pathogens
Black Shop Cleverness: Automatic Caustic Soda Disinfection When Stuck by a Dog (Modified Version)

IV. Dealing with Fatal Defects

--Sensor Failure

Oil Film Covering the Probe → Wipe with a Diesel-Soaked Cotton Swab (Dissolves Lipids)
Solenoid Valve Scale → Remove the Coil → Directly Power on a 12V Battery to Shake the Scale

--Delayed Shutdown

Delay Exceeding 10 Seconds → Short-Circuit the Photoresistor to Deceive the System (Simulate Departure)
Replace the Pressure Relief Spring (Harden 30%)