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Piusi Flow Meter: Sourcing Heavy-Duty Fleet Fuel and Diesel Transfer Dials
Quick Answer: Silver Automation Instruments supplies heavy-duty diesel transfer flow meters with mechanical dials and pulse output for fleet fueling. Many buyers use them as replacements for Piusi K24 style meters on 20 to 120 L/min pumps. Send your pipe size in DN, flow range in L/min, and fuel type to get a price quote from our Nanjing team.
Here is the thing. Most fleet fuel meters are bought after a failure, not before. A transport yard in Lagos runs a morning refueling window. If the dial stops turning or the register fogs up, 30 trucks wait in line. That problem drives sourcing decisions more than any catalog spec.
Silver Automation Instruments is a flow meter manufacturer with a Nanjing calibration workshop. We have seen this on customer sites many times. A distributor in Vietnam asked us last year for a diesel transfer dial that could handle 200 liter drums and 1000 liter tanks without changing the mounting thread. They had used a Piusi flow meter for years but wanted a second source with faster spare parts delivery.
Why Buyers Compare Piusi Flow Meter Types with Silver Instruments
Piusi flow meter models are common on diesel bowsers and light fuel transfer skids. The K24 style covers 20 to 120 L/min with a 1 inch BSP or NPT port. The dial register is simple and needs no battery. But sourcing from overseas can create long lead times and import delays in places like Surabaya, Dammam, and Valparaiso.
Silver Instruments builds oval gear flow meters for diesel with similar mounting patterns and flow ranges. The difference is local stock in Nanjing and direct shipment to Southeast Asia, Oceania, Latin America, Africa, and the Middle East. Most orders ship within 7 to 10 days after payment.
Key Specs for Heavy-Duty Fleet Fuel Meters
In practice, most engineers skip the datasheet until a meter fails. Then the important points are thread size, flow range, pressure, and whether the dial can survive heat and vibration. For diesel transfer, you should check these values.
Flow range: 20 to 120 L/min covers most fleet pumps. Some depots use 10 to 60 L/min for small nozzles. Larger sites with 150 L/min pumps need a 40 mm meter body. Accuracy: ±0.5% of reading is standard for our oval gear diesel meters. Repeatability matters more than accuracy for daily fuel tracking. Pressure: 10 bar is enough for most transfer pumps. Some models accept 20 bar. Temperature: diesel transfer usually runs from -20 °C to 60 °C. Viscosity: diesel sits around 2 to 6 cP. Biodiesel blends up to B20 usually work with aluminum or stainless steel gears.
Output options decide how the meter fits your site. A mechanical register is simple and needs no wiring. A pulse output sends a square wave signal to a batch controller or fleet management panel. Some customers add a 4-20 mA HART transmitter when the diesel tank is remote and the reading goes to a PLC. For hazardous areas, we can supply meters with ATEX Zone 1 certified pulse pickups. Some fleet depots convert volume to mass using a fixed density of 0.84 kg/L for diesel.
Replacing a Piusi K24 Style Diesel Meter
The most common replacement case is a 1 inch BSP female thread. Confirm this before you order because a few OEM skids use NPT or a flanged DN25 connection. Silver oval gear diesel meters can be ordered with BSP, NPT, or DIN flanges. The dial head rotates so you can read it from either side of the fuel line.
We recommend the Silve
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For higher flow depots, ask about the Silver OG-40 meter. It handles 40 to 240 L/min and fits DN40 flanges or 1.5 inch threads. This meter works well on truck loading racks and mobile tanker pumps. We also stock a DN15 version for 2 to 20 L/min additive and low flow applications.
Piusi is a trademark of its owner. Silver Instruments is an independent supplier of compatible diesel meters.
What Breaks First on Diesel Transfer Dials
Most failures we hear about are not gear wear. The dial lens cracks or fogs. Condensation enters the register when the meter sits outside in tropical humidity. A fleet in Manila reported this after monsoon season. We changed the lens to a polycarbonate design with an IP65 seal. That solved the issue for their outdoor tanks.
Seal swelling is another problem with low sulfur diesel and some biodiesel blends. Viton or FKM seals handle diesel better than standard NBR. Specify the seal material when you order. If you are not sure, tell us the fuel type and we will configure the meter for diesel, biodiesel, or kerosene.
Typical Sourcing Questions from Fleet Buyers
Most buyers want a price first. But price depends on the meter size, output, and seal material. Send us your pressure in bar, temperature in °C, pipe size in DN, and flow range in L/min. Also tell us if you need a mechanical register or 4-20 mA HART output. Our sales team responds within one working day.
Tel: +86-135-1213-1526
WhatsApp: 86-135-12131526
WeChat: +86 13512131526
FAQ
Can Silver Instruments supply a direct replacement for a Piusi flow meter?
Yes. For most Piusi K24 style diesel meters with 1 inch BSP ports, our OG-25 oval gear meter matches the flow range and mounting thread. Confirm the thread type before ordering.
What accuracy do your diesel transfer dials hold?
Our oval gear diesel meters hold ±0.5% of reading across the middle of the flow range. At very low flow near 2 L/min the error may increase to ±1.0%. Repeatability is ±0.2% which is more useful for daily fleet tracking.
Does the meter work with biodiesel blends?
Yes. Standard aluminum meters with FKM seals work with B5 and B20 diesel. For B100 or high water content fuel, use stainless steel internals and PTFE seals. Tell us the blend before you order.
How do I connect the pulse output to a fuel management system?
Most pulse outputs are open collector NPN with 10 to 30 VDC supply. The signal wire runs to a batch controller or PLC digital input. We can supply a 4-20 mA HART output instead if your system uses analog loops.
What information do you need for a quote?
Send us the pipe size in DN, flow range in L/min, fuel type, working pressure in bar, and output type. Also tell us your country and quantity. We will send a quote with freight and lead time.
Where can I see more diesel flow meter options?
Search flow-meter.com.au for oval gear diesel meter and fuel transfer dial data sheets. You can also send a request through the site.