Introduction
The HNDP40 1-1/2" stainless steel pneumatic diaphragm pump is specially developed for complex and demanding scenarios, serving as a high-performance diaphragm pump for harsh working conditions. It delivers powerful performance with a large throughput capacity and a maximum flow rate of 90 GPM (340.7 LPM). It supports flexible configuration of various wetted materials and port sizes to enable customized solutions for different media and working conditions, offering excellent versatility. As an ATEX air operated diaphragm pump, it reliably performs various processes including medium transfer, filling, circulation and batching, and is widely applied in the coating, oil and gas, mining, electronics, chemical and petrochemical industries. Constructed of high-quality stainless steel, the pump features outstanding resistance to corrosion, scouring and wear, enabling stable operation in harsh environments with dust, humidity, corrosive substances and flammable & explosive hazards.
Performance Curve
Product Description
|
Ratio |
1:1 |
|
Maximum Flow Rate |
90 g.p.m. (340.7 l.p.m.) |
|
Displacement per Cycle |
0.64 gal (2.42 L) |
|
Air Inlet (Female Thread) |
1/2 - 14 N.P.T. |
|
Liquid Inlet/Outlet |
1-1/2" - 11-1/2 N.P.T.F.-1, Rp1-1/2 (1-1/2-11 BSP Parallel) |
|
Maximum Operating Pressure |
120 psi (8.3 bar) |
|
Maximum Suspended Solids Passage |
1/4" (6.4 mm) |
|
Weight lbs (kg) |
77.5 (35.2) |
|
Maximum Dry Lift |
19 ft (5.8 m) |
|
Noise Level |
80.5 db(A) at 70 PSI, 60 Cycles per Minute |
Advantages and Features
1. The HNDP40 ATEX air operated diaphragm pump adopts a pure air-driven motorless design with intrinsic safety performance. Equipped with an optimized pneumatic motor and unbalanced valve structure, it features stall-free and dead-point-free operation. The precise reversing valve group ensures stable reversing signals and sensitive response for consistent running.
2. As a diaphragm pump for harsh working conditions, it delivers excellent resistance to acid, alkali, corrosion, seawater and salt spray as well as strong anti-scouring performance. It smoothly handles media containing fine solid particles without clogging, deposition, rusting or deformation.
3. The HNDP40 1-1/2" pneumatic diaphragm pump supports idling, dry running and no-load operation without burnout or core component damage during long-term no-feed operation. It provides powerful self-priming capability for instant startup without priming water, and automatically adjusts flow and pressure according to back pressure. Its low-shear conveying design perfectly protects sensitive media such as coatings, resins and adhesives without damaging their composition or affecting material quality.
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
● Oil & Gas / Chemical Parks
The HNDP40 ATEX air operated diaphragm pump adopts a pure air-driven, motorless design with no electric sparks or electrical safety hazards. It is fully suitable for high-risk flammable and explosive working conditions in oil and chemical parks, safely transporting various flammable oil products and volatile chemical raw materials for core processes such as tank unloading, tank transfer and medium conveyance. With a large flow rate of 340.7 LPM, it efficiently handles high-volume medium transportation and greatly improves operational efficiency, delivering stable performance with smooth and uninterrupted material supply without jamming or flow interruption.
● Metallurgy / Mining Industry
As a diaphragm pump for harsh working conditions, the HNDP40 perfectly adapts to extreme mining environments featuring heavy dust, high humidity, strong scouring and impurity-rich media. It stably transports granular and slightly corrosive media including mineral slurry, mining reagents, smelting waste liquid and dust removal makeup liquid. Constructed of high-quality stainless steel, it offers excellent resistance to scouring, acid and alkali corrosion, abrasion and deformation, withstanding long-term erosion from solid particles and waste liquid. Equipped with powerful self-priming capacity and low-shear conveying performance, it effectively protects material properties and ensures stable mineral processing.
● Shipbuilding / Offshore Engineering
The HNDP40 stainless steel pneumatic diaphragm pump delivers strong adaptability to the harsh working conditions of ships and offshore platforms, including high salt spray, high humidity, confined spaces and flammable and explosive environments. Made of premium stainless steel, it features outstanding resistance to salt spray, seawater corrosion and aging, maintaining stable performance without rusting or deformation under long-term marine corrosive conditions. Its pure air-driven ATEX explosion-proof design eliminates all electrical hazards, perfectly meeting explosion-proof requirements for fuel oil and chemical medium transportation in confined ship cabins and offshore platform spaces.
FAQ
Q: Mining production lines often involve intermittent start-stop operation and discontinuous material supply. Ordinary pumps are prone to burnout and damage under no-load dry running, accompanied by unstable flow and pressure delivery.
A: The HNDP40 ATEX air operated diaphragm pump supports long-term idling, dry running and no-load standby operation. It causes no pump burnout or core component damage under material-break conditions, perfectly adapting to intermittent production modes. It automatically adjusts flow and pressure according to actual working back pressure to ensure stable and balanced output. With low-shear delivery performance, it fully protects the activity and properties of mineral processing reagents.
Q: Various oil products and organic solvents in chemical parks feature strong corrosiveness and complex components. Ordinary diaphragm pumps adopt low-tolerance sealing materials, which are prone to aging, medium penetration and leakage during long-term transportation, resulting in material loss and site pollution.
A: As a diaphragm pump for harsh working conditions, the HNDP40 supports optional installation of various corrosion-resistant sealing materials. It is specially customized to adapt to complex media such as oil products and volatile chemical solvents, effectively resisting chemical corrosion and preventing sealing failure. Its precise sealing structure eliminates medium leakage and material waste while avoiding on-site pollution, fully meeting the clean and safe production standards of chemical parks.
Q: Where to buy the HNDP40 ATEX air operated 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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