Mastro Flex 1" (25mm) Rotary Barrel Pump - Heavy Duty Cast Iron Hand Handled Fuel & Oil Transfer Drum Pump with 3-Piece Suction Tube
Mastro Flex 1" (25mm) Rotary Barrel Pump - Heavy Duty Cast Iron Hand Handled Fuel & Oil Transfer Drum Pump with 3-Piece Suction Tube
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The Mastro Flex® 1" Rotary Barrel Pump is engineered for industrial, workshop, and agricultural fluid transfer tasks. Built with a rugged, heavy-duty cast iron pump body, this manual rotary dispenser delivers reliable, long-lasting performance when dispensing diesel fuel, lubricating oils, and other non-corrosive liquids. Featuring a smooth bi-directional rotary mechanism, the pump allows fluid discharge in either direction with a few reverse turns of the handle. It dispenses approximately 5 liters (1.30 gallons) per 20 turns. Comes complete with a 3-piece sectional suction tube and a 1" threaded inlet for quick assembly into standard oil drums. Manufactured in India under strict quality controls.
Specifications Table
| Parameter | Technical Specification |
| Brand / Line |
Mastro Flex® Professional Tools (ماسترو فليكس) |
| Product Type |
Manual Rotary Barrel & Drum Transfer Pump (طلمبة برميل يدوية / طلمبة زيت للبراميل) |
| Inlet Size |
1" Threaded (25 mm) |
| Flow Output Rate |
5 Liters (1.30 Gallons) per 20 Turns (for Diesel Fuel) |
| Body Construction |
Heavy-Duty Sturdy Cast Iron |
| Compatible Drum Sizes |
50 to 205 Liters (15 to 55 Gallons) |
| Directional Operation |
Dual-Directional (Pumps in either direction via handle rotation) |
| Included Accessories |
3-Piece Rigid Suction Tube Assembly |
| Manufacturing Origin |
Made in India |
| Primary Applications |
Diesel Fuel, Lubricating Oils, Heating Oil, Kerosene, and Non-Corrosive Industrial Liquids |
Key Features & Standards
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Sturdy Cast Iron Construction: Designed with a heavy-duty cast iron body to endure harsh jobsite and garage environments.
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High-Efficiency Flow Rate: Delivers 5 liters per 20 crank turns for fast, effortless manual fluid transfer.
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Bi-Directional Pumping: Reversible rotary action allows fluid to be pumped out or siphoned back with simple reverse turns.
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Universal Drum Compatibility: Threaded 1" inlet fitment with a 3-piece suction tube fits standard 15-gallon to 55-gallon (50–205 L) drums effortlessly.
⚠️ Safety Warning: Do not use this pump with corrosive chemicals, strong acids, solvents, water-based fluids, or highly volatile fuels like gasoline. Always ensure proper grounding when dispensing flammable liquids, and operate in well-ventilated areas away from open flames.