--- product_id: 155591932 title: "Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use" brand: "ng nopteg" price: "16732156₫" currency: VND in_stock: true reviews_count: 1 url: https://www.desertcart.vn/products/155591932-air-operated-double-diaphragm-pump-1-inch-inlet-and-outlet store_origin: VN region: Vietnam --- # Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use **Brand:** ng nopteg **Price:** 16732156₫ **Availability:** ✅ In Stock ## Quick Answers - **What is this?** Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use by ng nopteg - **How much does it cost?** 16732156₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/155591932-air-operated-double-diaphragm-pump-1-inch-inlet-and-outlet) ## Best For - ng nopteg enthusiasts ## Why This Product - Trusted ng nopteg brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description ApplicationPerfect for use with water. Ideal for use with low viscosity petroleum fluids including diesel, kerosene, motor oil and some waste oil.Warning!Can not use for corrosive liquid.Working PrincipleIn the pump two symmetrical working chamber each equipped with a diaphragm, the center link will be integrated into one. Compressed air from the pump inlet into the valve, through the valve body to introduce compressed air into one of the chamber to promote movement of the diaphragm chamber, while the other chamber gas emissions. Once the end of the stroke is reached, the gas distribution mechanism automatically introduces compressed air into the other working chamber to push the diaphragm in the opposite direction so that the two diaphragms move back and forth in unison.SpecificationsProduct: Diaphragm pumpType: Double diaphragmOperation Type: Air-operatedModel: QBY4-25LBody Material: AluminumInlet Port: 1 inch (25 mm)Outlet Port: 1 inch (25 mm)Air Inlet Size: NPT 1/2 inch (12.7 mm)Average Air Consumption: 38 CFMMax Flow Rate: 9 m3/h (35 GPM)Suction: 0-5 m (0-16.4 ft)Max Suspended Solids: 3 mm (1/8 inch)Max Head: 84 m (275.59 ft)Max PSI: 120 psiMax Temp.: 150 ℉Self-Priming Dry: 3 m (10 ft)Self-Priming Wet: 4.6 m (15 ft)Manifold Connection: SingleValve Type: BallBall Material: AcetalCheck Seat Material: PolypropyleneDiaphragm Material: NitrilePackage Size: 35 x 26 x 23 cm (13.78 x 10.24 x 9.06 inch)Gross Weight: 9.86 kg (21.74 lbs)Package Content1 x Air-Operated Double Diaphragm Pump1 x Product Manual ## Features - 【MAIN PARAMETER】Material: Aluminum; Diaphragm Material: Nitrile; Type: Double diaphragm; Operation Type: Air-operated; Inlet/Outlet Port Size/Standard：1 inch (25 mm); Air Inlet Size: NPT 1/2 inch (12.7 mm) 【Quality Performance】A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm (check valve, butterfly valves, flap valves, or any other form of shut-off valves) to pump a fluid. 【UNIQUE DESIGN】The listing is about 35 GPM Air-Operated Double Diaphragm Pump with 1 Inch Inlet And Outlet. This powerful air-operated double diaphragm pump QBY4-25L features a 1in. inlet and 1in. outlet capable of pumping up to 35 gallons/min at temperatures up to 150 degrees F. 【EXCELLENT CONSTRUCTION】Ideal for use with low viscosity petroleum fluids.Solid construction.Rugged construction - resists corrosion for reliable performance and long life. Bolted construction is designed for leak-free fluid handling. 【VERSATILE USE】Perfect for use with water.The diaphragm pump with convenient operating are widely used in various industries, such as petroleum, metallurgy, mining, coating material, printing, paper making, water treatment, automotive etc. ›See more product details ## Images ![Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use - Image 1](https://m.media-amazon.com/images/I/61RMaKxX4uL.jpg) ![Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use - Image 2](https://m.media-amazon.com/images/I/71-KpEvdP7L.jpg) ![Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use - Image 3](https://m.media-amazon.com/images/I/61zhl+7EWdL.jpg) ![Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use - Image 4](https://m.media-amazon.com/images/I/618467hkElL.jpg) ![Air-Operated Double Diaphragm Pump 1 inch Inlet & Outlet Aluminum 35 GPM QBY4-25L Max 120PSI for Chemical Industrial Use - Image 5](https://m.media-amazon.com/images/I/618jW8xAItL.jpg) ## Available Options This product comes in different **Size Name** options. ## Customer Reviews ### ⭐ leaked *by J***S on Reviewed in the United States on February 24, 2020* leaked. You get what you pay for I guess. The manufacture did take it back after a little discussion. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/155591932-air-operated-double-diaphragm-pump-1-inch-inlet-and-outlet](https://www.desertcart.vn/products/155591932-air-operated-double-diaphragm-pump-1-inch-inlet-and-outlet) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-04-25*