304 Stainless Steel Double Air Driven Pneumatic Diaphragm Liquid Transfer Pump

Product Description

304 Stainless Steel Double Air Driven Pneumatic Diaphragm Liquid Transfer Pump

A diaphragm pump is a type of positive displacement pump that moves liquids (or slurries) using a flexible diaphragm and check valves. It's widely used in industries like chemical processing, pharmaceuticals, food & beverage, and wastewater treatment because it can handle corrosive, viscous, or abrasive fluids safely.
A pump that uses a flexible diaphragm to create suction and discharge pressure.It is sometimes called a membrane pump.Works without seals or lubrication in the pumping chamber, so the liquid does not contact moving parts.Can be driven by air (air-operated double diaphragm pump, AODD) or mechanically (by motor, crank, or hydraulic drive).

Working principle

• Suction Stroke

  • The diaphragm is pulled back, creating a vacuum inside the pumping chamber.

  • The inlet check valve opens, allowing liquid to flow in.

• Discharge Stroke

  • The diaphragm moves forward, compressing the liquid.

  • The inlet valve closes, the outlet check valve opens, and liquid is pushed out under pressure.

• Cycle Repeats

  • In air-operated types, compressed air alternates between two diaphragms, creating continuous pumping.

  • In mechanical types, a crankshaft or hydraulic system drives the diaphragm back and forth.

Parameter:
Diameter range: usually 1"~3"
Flow range: 0.5~20 cubic meters/hour
Lift range: up to 70 meters (7 bar)
Working pressure: up to 7~8 bar
Working temperature: -10ºC~130ºC
Drive mode: mainly pneumatic, electric or hydraulic drive is also optional.
Connection mode: quick-install, thread, welding and other sanitary interfaces.
Applicable media: high viscosity, particle-containing, shear-sensitive fluids, etc.

 

Quality guarantee of 3 years

ISO 9001, FDA, SGS approved materials

7-10 days fast delivery on urgent requirements

20 years' Rich exporting experience to make you easy and happy with custom work

 

Product Description

304 Stainless Steel Double Air Driven Pneumatic Diaphragm Liquid Transfer Pump:

1.Innovative diaphragm material
Uses PTFE or elastomer blends for enhanced chemical resistance and extended diaphragm life.

2.Advanced fluid chamber design
Optimized to minimize dead zones, ensuring complete drainage and reducing contamination risk.

3.Modular air valve system
Features a compact, efficient air valve that improves energy efficiency and reduces air consumption.

4.Non-metallic fluid contact parts
Incorporates FDA-compliant polymers to prevent metal contamination and maintain fluid purity.

5.Dynamic seal technology
Employs low-friction seals that extend service intervals and ensure leak-free operation.

6.Flexible mounting options
Designed for horizontal or vertical installation, allowing versatile integration in tight spaces.

Product Parameters

Packaging & Shipping

 

FAB

Feature	Advantage	Benefit
1.Made from high-grade stainless steel, the pump offers excellent corrosion resistance and durability for sanitary applications. 2.The flexible diaphragm separates the fluid from mechanical parts, ensuring zero leakage and contamination. 3.Equipped with self-priming capability, allowing it to handle fluids containing solids and air without loss of suction. 4.Designed with compact dimensions, making it suitable for installations with limited space. 5.Incorporates one-way valves that maintain precise fluid flow and prevent backflow. 6.Supports CIP/SIP cleaning protocols, allowing easy disassembly and hygienic maintenance.	1.Ensures contamination-free fluid transfer by isolating fluid from mechanical components, critical in food and pharma sectors. 2.Capable of pumping viscous, abrasive, and shear-sensitive fluids without damaging the product quality. 3.Provides gentle pumping action with minimal shear, preserving delicate fluid properties. 4.The stainless steel build offers resistance to harsh chemicals and high temperatures, extending pump life. 5.Requires less energy compared to other positive displacement pumps of similar capacity. 6.Performs reliably over a wide range of pressures and temperatures, ensuring operational flexibility.	1.Enhances product safety and quality by preventing contamination during fluid handling processes. 2.Reduces maintenance time and costs through easy cleaning and quick part replacement. 3.Increases operational uptime by offering robust and durable construction suitable for demanding environments. 4.Versatile for many industries, it supports varied applications from food processing to pharmaceuticals. 5.Delivers stable and precise flow control, improving overall process efficiency and product consistency. 6.Helps companies meet strict sanitary and regulatory standards for sensitive production processes.

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Company Profile

 

 

 

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Welcome to check our other products.
 

 

 

JoNeng was established in July 2007, located in Wenzhou, China. Totally 100 nos of workers and the factory Covers 7000m2. Till now, we have 50 sets of LG Mazak machines, local CNC machines,automatic machining unit.We have the full inspecting quality control equipment: 1nos Ra roughness instrument, 3nos stainless steel spectrometer,roundness instrument,thickness instrument, radius instrument, 3 nos pressure testing center.
We have three manufacturing factories under Joneng enterprise.
Jiayuan is especially into elbow, tee, reducer,manifolds,fittings in both sanitary grade and schedule grade ;
Lingdong is focusing into ferrule, union, sight glass, butterfly valves which are produced from CNC machines;
Ezo is into manhole covers, hoppers and small tanks.

We mainly manufacture:
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Stainless steel sanitary & Industrial grade , , , , ;
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Stainless steel mixing tank, storage tank, reactors...

The products are produced according to SMS, DIN, AS, BS, BPE, JIS,JIS, ISO,ANSI B16.5, ASME and other standards. They also can be customized. Our products have been exported to dozens of
countries and regions such as Europe, America, Middle East,Australia,Turkey, Iran,Thailand... more than 100 countries.
Joneng is approved with CE, PED, ISO9001, ISO14001 quality management system. The products are complied with FDA certificate.
The product can be widely used in Dairy, Beer, Wine,Beverage, Food, medicine, Chemical,Water Treatment and other fields.
JoNeng always insist in "What we say, What we do". Our goal is to make a centennial factory. We always believe honesty and responsibility is the only way leading to long term business relationship. Wishing to have a cooperation with you for more than 10 years.

More advantages of the company:
√ With 17 prolific years of dedicated expertise in the industry, we embody an unwavering commitment to quality and innovative solutions.
√ Spanning an impressive 6800m2, our state-of-the-art facility is adeptly equipped to manage diverse production demands with flawless efficiency.
√ Our skilled workforce of 100 employees fuels our engine of excellence and propels our growth trajectory.
√ Thriving in over 100+ countries, our expansive global reach is a testament to the trust and satisfaction our international clientele repose in us.
√ With a formidable network of 1000+ partners worldwide, our collaborative endeavours continue to drive success and shared aspirations.

 

 

OUR PRODUCTION CAPACITY 

 

Production Lines	Stainless steel sanitary pipe fittings' line, machining line, sanitary manhole line,
Product Range	Sanitary butterfly Valve, sanitary diaphragm valve, sanitary pipe fittings, union, ferrule, sight glass, manhole cover, safety valve, sampling valve...
Year Established	2007
Factory Size in Square Meters	5000M2
NO. OF TOTAL STAFF	130
Production Capital	8 000 000 USD
Detail capacity	Manhole covers	12000nos
	Pipe fittings	150000nos
	Ferrules, unions, connectors	200000nos
	Diaphragm valves	15000nos
	Butterfly valves	20000nos
Investment in Manufacturing Equipment	750000USD
Details of equipment	For machining parts 29 nos of LG Mazak CNC Machines 4 nos of local CNC machines 2 nos of automatic CNC center 12 nos of plain lathe For pipe fittings 4 nos of press 3 nos of cutting machine 3 nos of chamfering machine We also have the following quipments 4 nos of polishing machine 12 nos of grinding machine 3 nos of laser marking machine 3 nos of pressure testing machine 1 nos of temperature testing machine 3 nos of spectro instrument 1 nos of surface roughness device
Primary Competitive Advantages	Strict inspection, honest business way, fast revert on order problem
Stocked materials	Big quantity for raw forging of butterfly valve, diaphragm valve, ferrule, union, adapters, pipe fittings, clamps, sight glass, safety valve, manhole cover,
OEM Services Provided	Yes
Design Service Offered	Yes
Sales Volume	6 000 000 USD
Export Percentage	80%
MAIN MARKET	USA, Germany, Hungary, Canada, Thailand, Holland, England, South Africa, Indonesia, Saudi, India, New Zealand, Australia, Middle East...
Own Brand Name	JoNeng

Certifications

FAQ

 

1. Are you a trading company or factory? 
We are a manufacturer factory and we also have our own exporting license. 

2. Do you have certificate? 
Yes, ISO, FDA, LFGB, CE, PED certificate. We also have some patents in design. 

3. How do you control the quality? 
In quality control, the most important is to avoid material mixing. 
In our factory, 3 spectro PMI machines are used in raw material warehouse, production plant, dispatch plant. 
Pressure inspecting machine, PMI machines, RA roughness spector, hardness testing machine...All machines help in inspection. 
2 staff inspect during production in different sections
5 staff inspect the finished productions to avoid shortage, poor quality, mixing chemical...

4. How many factories do you have?
Under the esteemed Joneng enterprise, we proudly operate three specialized manufacturing facilities. 
Jiayuan excels in producing elbow, tee, and reducer fittings in both sanitary and schedule grades;
Lingdong focuses on precision-engineered ferrules, unions, sight glasses, and butterfly valves using advanced CNC technology; 
while Ezo specializes in designing high-quality manhole covers and small tanks to meet diverse industrial needs.

5. If there is any quality problem, how do you solve it? 
We are very proud that we never make one customer leave us. We are not 100% perfect, there is some quality problem. 
Normally replacement, or compensation, or resend goods to customers as per the condition. To be discussed as per condition. 

6. How long is your delivery time? 
For normal products in 7-10 days; For bulk order, in 15-25 days. It depends. 

7. Warranty time? 
3 years warranty for all of our stainless steel products. Gaskets or the easy broken parts are not included due to the different application for customers. 

8. Why trust in us? 
14 years in this industry. It makes us professional. Good credit in this market. 
All of our machines are the assurance of our responsibility. 

9. Free sample? 
Free samples can be provided for first cooperation under sincere cooperation. 

10. What is the MOQ? 
1PCS MOQ is welcome for starting cooperatoon

11. Material certificate? 
Material certificaite, mill certificate, pressure testing certificate, roughness certificate, measure certificate, RT certificate, ...Can be available, please declare when inquiry us. 

12. More questions are appreciated.