Nozzle Manual Dispenser | 45L/min 25mm Inlet | Heavy-Duty Diesel Handle

Control bulk fluid dispensing with this lightweight fuel nozzle designed for gravity systems and transfer pumps. Constructed from dense polypropylene, this plastic fuel nozzle handles up to 45 liters per minute. The manual fuel nozzle gun fits standard delivery hoses to transfer diesel, kerosene, and DEF without internal rust. Features and Benefits - Chemical-resistant polypropylene fuel nozzle body - resists corrosion from diesel exhaust fluid, water, and light oils - Stepped inlet barb fitting - accommodates both 20mm and 25mm transfer hoses securely with standard clamps - Built-in trigger lock notch - reduces hand fatigue during continuous high-volume dispensing jobs - Polypropylene fuel nozzle with hook - hangs cleanly on storage tank brackets when dispensing is finished Applications - Refueling yard tractors and machinery using a 1 inch plastic diesel nozzle on farm fuel tanks - Dispensing urea and DEF fluids from intermediate bulk containers with a def transfer nozzle - Directing kerosene or light industrial solvents through a 3/4 manual plastic fuel nozzle setup Safety & Materials The FLM-3 fuel nozzle features a durable plastic body designed for site dispensing. It is compatible with diesel, petrol, and kerosene transfer systems. Always check chemical compatibility before handling volatile fluids, and ensure your delivery line is properly bonded to earth to eliminate static discharge. Unlike automatic handles that rely on an internal venturi vacuum port to trigger shut off, this manual dispenser requires constant operator control to stop liquid movement. Always operate within the rated maximum flow rate of 45 L/min. Never leave the handle unattended during fuel transfers, and inspect the body periodically for chemical degradation or impact cracks. Core Parts Needed: To build a digital inline monitoring rig for this manual nozzle, assemble the following components: - FLM-3 manual fuel nozzle with 20 mm or 25 mm inlet - Inline turbine sensor housing rated for hydrocarbon fuels - Hall effect pickup sensor compatible with liquid fuels - Microcontroller board such as an Arduino Uno or Nano - 12V to 5V DC step-down voltage regulator for vehicle power - Fuel delivery hose matched to the 20 mm or 25 mm inlet - Stainless steel hose clamps for secure, leak-free fittings - Pull-up resistor, 10k ohm, for the sensor signal line Hardware Connection & Schematic Plumb the inline turbine sensor directly upstream of the nozzle inlet. Position the sensor in a straight pipe run to minimise fluid turbulence across the internal rotor. A typical turbine flow meter works by passing liquid over internal blades, causing them to spin at a speed proportional to liquid velocity. A pickup sensor outside the fluid path detects passing magnetic poles. Wire the sensor power to a stable 5V rail fed by a 12V vehicle battery step-down converter. Join the ground lines together. Route the pulse output line to an interrupt-capable digital input pin with the 10k ohm resistor tied to 5V. Calibration & Math Calibrating a custom fuel flow meter requires calculating a precise K-factor, which represents pulses generated per litre dispensed. Deliver a known fluid volume into a certified measuring container through the manual handle at typical working pressure. Divide the recorded raw pulse count by the actual litres dispensed to determine your K-factor. For instance, if the pickup sensor yields 2,250 pulses over a 5-litre pour, the K-factor is 450 pulses per litre. Recalculate this value when changing fluids between diesel, petrol, or kerosene, because fluid viscosity differences alter rotor drag and impact your total flow calculations. Arduino Code Example volatile unsigned long pulseCount = 0; const float kFactor = 450.0; unsigned long oldTime = 0; void pulseISR() { pulseCount++; } void setup() { Serial.begin(9600); pinMode(2, INPUTPULLUP); attachInterrupt(digitalPinToInterrupt(2), pulseISR, FALLING); } void loop() { if (millis() - oldTime >= 1000) { detachInterrupt(digitalPinToInterrupt(2)); float flowRate = ((pulseCount / kFactor) 60.0); float totalLitres = pulseCount / kFactor; Serial.print(flowRate); Serial.print(" L/min - Total: "); Serial.println(totalLitres); oldTime = millis(); attachInterrupt(digitalPinToInterrupt(2), pulseISR, FALLING); } }