Introduction
The HNDP80 3-inch self-priming pneumatic diaphragm pump is a professional conveying equipment tailor-made for the petrochemical industry. Featuring excellent overall performance, it reaches a maximum flow rate of 237 GPM (897 LPM), and its ultra-large flow capacity easily adapts to various high-volume, long-duration and high-load continuous industrial conveying conditions with higher working efficiency than ordinary pumps of the same specification. Equipped with powerful self-priming capability, it requires no pre-filling or water diversion and achieves fast feeding upon startup, greatly improving adaptability and flexibility for complex working scenarios such as material interruption, low-level liquid suction and intermittent start-stop operation. Adopting a steady operation diaphragm pump system, the whole unit runs smoothly with low vibration and pulse-free flow, eliminating pressure fluctuations and uneven discharge to fully meet high-precision requirements for batching, filling and circulation processes. With an ultra-tight pneumatic system and fully enclosed conveying structure, it effectively avoids medium volatilization, leakage and secondary pollution, fully ensuring the cleanliness and quality of conveyed media.
Performance Curve
Product Description
|
Ratio |
1:1 |
|
Maximum Flow Rate |
237 g.p.m. (897 l.p.m.) |
|
Displacement per Cycle |
2.65 gal (10.03 L) |
|
Air Inlet (Female Thread) |
3/4 - 14 N.P.T.F.-2 |
|
Liquid Inlet/Outlet |
3" - 8 N.P.T.F.-1 Rp 3 (3 - 11 BSP Parallel) |
|
Maximum Operating Pressure |
120 psi (8.3 bar) |
|
Maximum Suspended Solids Passage |
3/8" (9.5 mm) |
|
Weight lbs (kg) |
222.2 (100.8) |
|
Maximum Dry Lift |
17.6 ft (5.4 m) |
|
Noise Level |
86.3 db(A) at 70 PSI, 60 Cycles per Minute |
Advantages and Features
1. The HNDP80 3-inch self-priming pneumatic diaphragm pump adopts high-quality stainless steel material, which resists various corrosive fluids and harsh working conditions with high humidity and heavy dust. It delivers a maximum flow rate of 237 GPM (897 LPM), achieving higher flux and working efficiency than conventional pumps of the same specification. It maintains powerful pumping force and stable output during high-volume fluid conveying, medium circulation and waste liquid discharge.
2. Equipped with a steady operation diaphragm pump system, the pump runs smoothly with extremely low vibration, no flow pulsation and no pressure fluctuation. It eliminates unstable discharge and flow deviation to ensure uniform and accurate fluid output. It perfectly adapts to high-precision industrial processes such as quantitative batching, fixed-volume filling and pipeline circulation, enabling standardized and repeatable production to meet refined manufacturing requirements.
3. The HNDP80 pneumatic diaphragm pump features a high-airtight pneumatic system and fully enclosed conveying structure, keeping the medium completely isolated from the external environment during operation. It provides excellent self-priming performance with no need for priming or water diversion, enabling fast feeding after startup.
Complete System Installation Schematic
1. Air Source Treatment Unit
Filter Regulator ②: Filters impurities and moisture in compressed air first, then regulates and stabilizes the air pressure supplied to the pump.
Dryer ③: Further removes moisture from compressed air to prevent water vapor from entering the pump chamber and causing internal component corrosion and icing.
Lubricator ④: Atomizes lubricating oil and mixes it into compressed air to lubricate moving parts such as pneumatic valves and diaphragms of the pump and reduce wear.
Supporting components: Air Inlet, Check Valve, Shut-Off Valve.
2. Pump Body and Exhaust System
Pump Body: The core pneumatic diaphragm pump, which drives the diaphragm to move back and forth via compressed air to realize fluid suction and discharge.
Muffler: Installed at the pump exhaust port to reduce exhaust noise.
Piped Exhaust: Discharges waste gas to a safe area to avoid workshop environmental pollution.
Flexible Connection: A flexible connection between the pump and the air source treatment unit to buffer vibration and reduce stress transmission.
3. Fluid Suction Pipeline (Left Side of the Figure)
Suction: The starting point for fluid entering the system, connected to upstream liquid storage tanks or pipelines.
Shut-Off Valve: Cuts off fluid suction for convenient pump maintenance.
Compound Gauge: Monitors suction-side pressure to identify issues such as insufficient suction lift and pipeline blockage.
Flexible Connector: Absorbs pump vibration and prevents stress damage caused by rigid pipeline connection.
Drain Port: Drains residual liquid in the suction pipeline for maintenance or pipeline emptying.
Pipe Connection: Multiple connection types are optional to adapt to on-site pipeline conditions.
4. Fluid Discharge Pipeline (Right Side of the Figure)
Flexible Connector: Buffers pump vibration to protect pipelines and equipment.
Pipe Connection: Consistent with the suction end, adaptable to on-site pipelines.
Drain Port: Drains residual liquid in the discharge pipeline for maintenance and emptying.
Surge Suppressor ①: Stabilizes the pulsating discharge pressure of pneumatic diaphragm pumps and protects pipelines and downstream equipment, serving as a key accessory on the discharge side.
Pressure Gauge: Monitors discharge-side pressure to judge the operating status of the pump.
Shut-Off Valve: Cuts off fluid discharge to facilitate maintenance of the pump and downstream equipment.
Discharge: The terminal outlet of the system, connected to downstream pipelines and equipment.
Unregulated Air Supply to Surge Suppressor: Directly supplies unregulated compressed air to the surge suppressor, utilizing the compressibility of gas to absorb fluid pulsation.
Applications
● Corrosive Medium Conveying for Petrochemical Industry
The HNDP80 stainless steel self-priming pneumatic diaphragm pump is a dedicated conveying device for the petrochemical industry. Adopting a high-quality stainless steel body, it delivers excellent corrosion and oxidation resistance, enabling long-term and stable conveying of corrosive chemical liquids, high-risk chemical media and volatile petrochemical materials. With a fully enclosed and high-airtight conveying structure, it completely isolates the medium from the external environment, effectively preventing the volatilization and leakage of hazardous media as well as impurity ingress. It avoids secondary pollution and stably guarantees the purity of chemical materials and standardized production processes.
● High-precision Chemical Batching and Filling Field
Equipped with a steady operation diaphragm pump system, the pump runs smoothly with ultra-low vibration, no flow pulsation and no pressure fluctuation, delivering uniform and accurate flow output. It is perfectly suitable for high-precision processes such as quantitative batching, fixed-volume filling and pipeline circulation in the chemical, coating and electronic industries. Featuring powerful self-priming performance, it requires no pre-filling or water diversion and enables fast feeding startup, adapting to intermittent operation, standby with no material and frequent start-stop working modes of production lines.
● Mining and Outdoor Complex Working Condition Field
Built with a sturdy and deformation-resistant stainless steel structure with high wear resistance, the HNDP80 pump adapts excellently to harsh outdoor working conditions of mining and oil & gas sites featuring heavy dust, high humidity and temperature fluctuations. It offers superior self-priming capacity to support low-level suction, outdoor temporary water pumping and emergency waste liquid transfer. It meets both regular fixed pipeline conveying in factories and flexible temporary outdoor operation without pre-watering or pretreatment, realizing multi-scenario application with wide working condition coverage.
FAQ
Q: For outdoor temporary water pumping and low-level liquid transfer without water supply conditions on site, there are concerns that the equipment cannot start normally.
A: The HNDP80 self-priming pneumatic diaphragm pump requires no water diversion or pump priming. It supports direct low-level suction and fast feeding without being restricted by on-site conditions, easily adapting to complex scenarios such as outdoor temporary operation, emergency water pumping and low-level waste liquid transfer.
Q: Petrochemical production involves mostly corrosive media, which may corrode and age the pump material, causing damage, liquid leakage and pressure relief failures.
A: The HNDP80 diaphragm pump adopts high-quality food-grade stainless steel material, which is specially adapted to various acid, alkali and corrosive chemical media. It delivers excellent corrosion resistance, aging resistance and oxidation resistance. It withstands long-term scouring of corrosive media without damage or leakage, greatly extending the service life and ensuring stable continuous operation for petrochemical production.
Q: Where to buy the HNDP80 self-priming pneumatic diaphragm pump?
A: You may contact our sales team via the email juicy@sxhono.com.cn to obtain product specifications, quotations and selection recommendations. If you have special application requirements, we can also provide you with customized fluid transfer solutions.
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