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About Us
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Products & Services
Purified Water Preparation System Water for Injection Preparation System 

Ambient Membrane WFI Preparation System Pure Steam Generator
Bioreactor Upstream/Downstream Piping & Tanks
High-Pressure Homogenizer System Ultrafiltration System 

Sanitary-grade container Electrolytic Ozone Generator 

Hygienic Bottom-Mount Magnetic Stirrer Sanitary Centrifugal Pump For process gas systems—including process compressed air, nitrogen (N2), oxygen (O2), carbon dioxide (CO2), and specialty gases—Welkin provides secondary design, fabrication, installation, commissioning, and validation services. These services are capable of meeting the requirements of domestic and international projects regulated by the FDA, WHO, EMEA, NMPA, and other authorities.





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Welkin can provide tailored powder or liquid dosing and blending systems that meet the requirements of the pharmaceutical, food, and beverage industries, customized to clients’ specific processes.
• Added to the pipeline mixing pump via a powder metering and feeding system for online mixing.
• Pre-mixing prior to addition to the circulating pump pipeline via a mechanical diaphragm metering pump
• OtherWelkin provides customers with customized solutions, encompassing project design, procurement, manufacturing, construction and commissioning, as well as validation services.
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Welkin adheres to the service philosophy of “comprehensive, high-quality, and rapid,” providing convenient and efficient technical and service support for customers’ system operations and promptly resolving any issues that arise during the after-sales process.
• Professional maintenance and repair services are provided during the warranty period;
• Provide professional and ongoing training services;
• We have a professional technical team that responds promptly and provides on-site service.
• Free provision of our in-house developed remote cloud service, enabling remote monitoring via the mobile app;
• A well-stocked inventory of spare parts is maintained to ensure convenient and timely component replacement over the long term, thereby guaranteeing the reliable operation of customers’ equipment.
Domestic after-sales service network coverage:
• Headquarters and Production Base: Wuxi
• Shanghai Branch: Shanghai
• Southeast Region: Guangzhou
• Southwest Region: Chengdu
• North China Region: Beijing -
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Features
· PWG can applied in industry of pharmaceutical, food, cosmetics and fine chemicals;
· Quality of purified water can meet the requirements of WHO, USP, EP, ChP, JP etc;
· Capacity: 250-50000l/h(Larger capacity can be customized.);
· Quality of purified water is always stable at a low microbe limit by controling microorganisms from the beginning;
· WELKIN PWG can reduce energy consumption and discharge of pollutants such as waste water.
Advantage
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Design Feature |
Product Advantage |
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·Modular design & Compact layout |
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· Easy to operate and maintain; Easy connection to utilities |
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· Back pressure control |
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· Constant flow rate |
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· Carousel design/Double softener design |
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· No running dead leg and balanced operating load |
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· Fully automatic pasteurization |
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· Highly efficient and to avoid permanent damage to RO/EDl membrane |
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· Internal circulation mode / internal circulation mode under zero emission |
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· Turbulent system circulation and no dead leg |
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· Powerful automation system |
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· Flexible adjustment of system capacity&system recovery rate |
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· Raw water constant residual chlorine system |
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· Control microorganisms at source |
List of Quality of PW
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Unit |
CHP |
EP |
USP |
WELKIN |
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Conductivity |
us/cm |
<4.3@20℃ |
<4.3@20℃ |
<1.1@20℃ |
<0.5 @ 20℃ |
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TOC |
mg/L |
<0.5 |
<0.5 |
<0.5 |
<0.5 |
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Microbe Limit |
cfu/ml |
<100 |
<100 |
<100 |
<50 |
Specification
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Model (DOSIPURE-) |
500 |
1000 |
1500 |
3000 |
4000 |
6000 |
8000 |
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Capacity (L/H) |
@15℃ |
500 |
1000 |
1500 |
3000 |
4000 |
6000 |
8000 |
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Max Feed Water (L/H) |
During Normal Operation |
670-720 |
1350-1450 |
2000-2200 |
4000-4300 |
5350-5750 |
8000-8600 |
11,000–11,500 |
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With RO Concentrated Water Recovery Function |
600-630 |
1200-1250 |
1800-1900 |
3600-3800 |
4850-5000 |
7200-7550 |
9,500–10,000 |
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Total Water Conversion Factor |
During Normal Operation |
70-75% |
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With RO Concentrated Water Recovery Function |
80-85% |
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Length (L) |
mm |
2800 2800 3500 3800 3800 4400 4400 |
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Width (D) |
mm |
1600 |
1600 |
1600 |
1900 |
2100 |
2300 |
2500 |
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Height(H) |
mm |
2200 |
3100 |
3100 |
3300 |
3300 |
3300 |
3300 |
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Dry Weight |
kilogram |
1800 |
2100 |
2300 |
2500 |
2700 |
3200 |
3500 |
*Remarks: Customized Type is available
Compact Purified Water Generator Specification
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Model No. |
Raw Water |
Dimension (length/width /height, mm) |
Description |
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Labwell-250 (250 L/H) |
Raw water: city water |
L1900*W800*H2150 |
The PWG is suitable for PWG is suitable for city water source and loop system. |
Keywords:
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Headquarters Address: No. 156, Xixie Road, Xinwu District, Wuxi City, Jiangsu Province
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