Features: 1.The maximum working pressure of the diesel flowmeter is 10Bar, and the burst pressure is 30Bar. 2.Designed to accurately measure the amount of dispensed liquid fuel or lubricant, with a flow rate of 20?120L/min and a range of 5?30 GPM. 3.Comes with a large screen display, easy to read, four digits (return to zero), 8 digits (non?return to zero). 4.The handwheel can be quickly returned to zero manually, the accuracy is +/?1%, the repeatability is 0.2%, and the operation is very simple. 5.For non?commercial use only and can be used in high?viscosity liquid media, diesel, gasoline, kerosene, engine oil and other lubricating oils. 6.Made of high?quality aluminium alloy and plastic, which has exquisite workmanship and is durable. Specification: Item Type: Fuel Flow Meter_x000D_ Material: ABS+Aluminum Alloy_x000D_ Flow Range: 5-30 GPM_x000D_ Flow Rate: 20-120L / min_x000D_ Accuracy: 1%_x000D_ Repeatability: 0.2%_x000D_ Maximum Working Pressure: 10Bar_x000D_ Burst Pressure: 30Bar_x000D_ Nominal Diameter (Caliber): Approx. 1in / 2.5in_x000D_ Feature_x000D_ Low Cost_x000D_ Less Maintenance_x000D_ _x000D_ The subtotal can be set to zero._x000D_ The flowmeter is designed for non-commercial use only._x000D_ 4 Digits of Diesel Fuel Flow Meter_x000D_ Used in Diesel, Gasoline, Kerosene._x000D_ Easily Reset the Register to Zero._x000D_ The Main Accumulator Register 9999._x000D_ Model: 4-Digit Flowmeter_x000D_ Entrance Size: BSPT / Npt 1in_x000D_ Flow Rate: 20-120L / Min_x000D_ Metric Accuracy: 1%_x000D_ Accumulative Counting Digits: 8 Digits Note: 1. During the installation of the oil dipstick, please pay attention to the tightness of the interface. Need to use gaskets or unprocessed taps to improve sealing._x000D_ 2. The flow meter function will be tested before leaving the factory. There may be some oil on the surface of the product. This is normal. Just wipe it clean, it will not affect subsequent use;_x000D_ 3. The reason why the oil gauge does not turn: If it is used in water, it will rust and get stuck. _x000D_ 4. A pre?filter device must be added. The filter needs to be installed in front of the oil inlet, otherwise foreign matter will block the turntable.