Your Professional Diaphragm Pumps Supplier
Shanghai Tengsheng Pump Manufacturing Co., Ltd. is a cross-regional high-tech machinery and equipment manufacturing enterprise mainly engaged in the manufacturing and sales of pumps, fluid equipment, and pump control equipment. Fire pumps, multi-stage fire pumps, end-suction pumps, long-shaft fire pumps, diesel engine fire/emergency pump sets, pipeline pumps, TD circulating pumps, self-priming pumps, fire control cabinets, fire pressure stabilization equipment, portable diesel engine pumps, submersible sewage pumps, high-efficiency negative-pressure intelligent variable frequency water supply equipment, etc.
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QBY Pneumatic Diaphragm Pump Supports OEM/ODMProduct Features Air operated, no electricity needed Safe for flammable, explosive environments, no risk of electric leakage. Strong self-priming ability Can suck liquid without priming, easy to
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Diaphragm Pump for High-viscosity LiquidsOur Diaphragm Pump for High viscosity Liquids is a positive displacement pump designed specifically for the transportation of high viscosity media and solid slurry. With pneumatic/electric dual
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Diaphragm Pump for Sewage TreatmentThe Diaphragm Pump for Sewage Treatment produced by Tengsheng in Shanghai is a positive displacement pump designed specifically for the transportation of complex media such as sewage, sludge, and
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Diaphragm Pump for Chemical TransferThe Diaphragm Pump for Chemical Transfer produced by Tengsheng in Shanghai is a positive displacement pump designed specifically for transporting hazardous media such as strong corrosion,
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304 Stainless Steel Diaphragm PumpsThe 304 Stainless Steel Diaphragm Pumps produced by Shanghai Tengsheng Company are volumetric pumps designed specifically for the high hygiene, pollution prevention, and low shear conveying needs of
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Diaphragm Pump for Mining SlurryThe mining mud diaphragm pump is a positive displacement pump designed specifically for the transportation of high concentration, high abrasion, and solid particle containing mud/slurry in mines. It
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Diaphragm Pump for Coating TransferThe diaphragm pump for coating transportation produced by Shanghai Tengsheng is a positive displacement pump designed specifically for viscous, particle containing, and easily sedimentable media such
why choose us
Excellent Customer Service
We are committed to building long-term partnerships by providing reliable products, responsive service, and professional technical support. Together with our global partners, we strive to contribute to the advancement and sustainable development of the pump industry.
Quality & Reliability
Quality is at the core of everything we do. We operate under strict quality control procedures and use advanced testing systems to ensure every product delivers stable performance, safety, and long service life. From raw materials to final inspection, every production stage is carefully monitored to guarantee product reliability.
Innovation & Technology
Driven by continuous innovation, Tengsheng Pump invests in product development, manufacturing improvement, and intelligent control technology. Our experienced engineering team works closely with industry experts to optimize product performance and provide efficient solutions for customers worldwide.
Our Commitment
We are dedicated to building long-term partnerships through quality products, professional service, and customer-focused solutions. Tengsheng Pump looks forward to cooperating with global partners and creating sustainable value together.
Advantages of Diaphragm Pumps
No Leakage:
The sealed diaphragm actively prevents the leakage of the fluid, making the pumps best for toxic and hazardous substances.
01
Self Priming Capability:
Able to extract fluid from dry environments without the need for external priming.
02
Dry Running Tolerance:
Able to function normally even during short dry runs.
03
Versatile Fluid Handling:
Best for solvents, slurries, acids, and viscous liquids.
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Low Maintenance:
Due to simple design, it is easy to service and minimising downtime.
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Specifications
|
No. |
Model |
Rated Flow (m³/h)R |
Rated Head (m) |
|
1 |
QBY-10 |
0.8 |
50 |
|
2 |
QBY-15 |
1 |
50 |
|
3 |
QBY-25 |
2.4 |
50 |
|
4 |
QBY-32 |
6 |
50 |
|
5 |
QBY-40 |
8 |
50 |
|
6 |
QBY-50 |
12 |
50 |
|
7 |
QBY-65 |
16 |
50 |
|
8 |
QBY-80 |
24 |
50 |
|
9 |
QBY-100 |
30 |
50 |
Types of Diaphragm Pumps
Air-Operated Double Diaphragm (AODD) Pumps
These pumps run on compressed air. That makes them great for explosive or hazardous zones. They can self-prime. They can also run dry without damage. They are lightweight and easy to move. That’s why they’re popular for mobile jobs.
01
Electric Operated Double Diaphragm (EODD) Pumps
These pumps combine diaphragm design with electric control. They are energy-efficient. They offer precise flow control. They can also be automated for remote monitoring. That makes them ideal for modern setups.
02
Hydraulic Diaphragm Pumps
These are built for high-pressure work. They offer smooth, pulse-free flow. That makes them perfect for accurate dosing. You’ll often find them in chemical plants and heavy-duty applications.
03
Mechanical Diaphragm Pumps
These pumps are simple and affordable. They suit low-pressure jobs like water treatment. They are best for moderate-duty, routine tasks.
04
Components of Diaphragm Pumps

Pump body
Exclusive to Mud Sucker diaphragm pumps is a suction and discharge area with a patented contoured velocity channel at the bottom of the casting. In general, the central body includes air inlet and outlet valves and a pneumatic exchanger to maintain pressure within the pump.
Fluid (valve) chambers
The fluid chambers hold the liquid being circulated through and out of the pump. They consist of the operator’s choice of flapper valve or ball valve technology to move the fluid.
Manifolds
Manifolds create a seal between the diaphragms and the pump chambers; in some cases, they contain check valves that prevent liquid from flowing backwards.
Air valve
The air valve pushes compressed air throughout the pump assembly, moving the diaphragms and expressing air into the atmosphere to create a vacuum inside the pump.
Diaphragms
The diaphragms act as a barrier, blocking flow through each fluid chamber in succession to maintain suction in the pump.
Air Chambers
The air chambers act as a pulsation dampener when the diaphragm pump is transferring thinner liquids like water. This reduces vibration and “hose kick” when the pump is in operation.

Key Applications of Diaphragm Pumps
Chemical Processing
They move corrosive acids, solvents, and slurries without leaking.
Pharma and Biotech
They handle fluids safely in sterile environments.
Food and Beverage
They use hygienic materials. That ensures contamination-free transfer of liquids.
Water and Wastewater Treatment
They dose chemicals precisely. They can also move sludge easily.
Paints, Inks, and Coatings
They can handle thick and abrasive liquids without clogging.
Mining and Construction
They are strong enough to transfer slurry and handle dewatering.
FAQ
We're well-known as one of the leading diaphragm pumps manufacturers and suppliers in China. We warmly welcome you to buy customized diaphragm pumps at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.
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