Product Description:
These premium replacement diaphragms are specially engineered for QBY/K series pneumatic diaphragm pumps. Crafted from durable elastomers and advanced engineering plastics, they provide reliable performance and longevity.
Customers can choose from three material options to suit various applications: NBR (nitrile rubber) is ideal for general-purpose use with oil and water; F46, a modified PTFE fluoropolymer, is designed to handle aggressive chemicals; and imported PTFE (polytetrafluoroethylene) offers exceptional chemical resistance and meets high-purity standards.
The diaphragms are available in multiple outer diameters ranging from 140 mm up to 450 mm. They come with standard bolt hole patterns, such as the 10-hole configuration, or plain-edge designs to fit different pump models effectively.
Each diaphragm is precision-molded to ensure an excellent seal, extended flex life, and consistent pumping efficiency under demanding industrial conditions. These replacement parts are perfect for use in slurry, chemical, food processing, and mining transfer pumps where reliable operation is critical.
Features:
Material Options
NBR (Nitrile): This material offers excellent resistance to oil, fuel, and water. It operates effectively within a temperature range of -30°C to +100°C, making it suitable for various industrial applications.
F46 (Fluoropolymer): Known for its outstanding chemical resistance, F46 withstands acids, solvents, and strong oxidizers. It functions well within temperatures from -20°C to +150°C, providing durability in harsh environments.
Imported PTFE: Featuring a superior non-stick surface, PTFE is inert to nearly all chemicals. Its properties make it ideal for sensitive applications such as food and pharmaceutical industries.
Dimensions and Mounting
Diameter Range: Components are available in sizes ranging from 140 mm to 450 mm, accommodating a wide variety of pump models to ensure compatibility.
Bolt Hole Configurations: Depending on the size, the parts come with a standard 10-hole bolt pattern for larger dimensions or a plain-edge design without holes for clamp-style mounting solutions.
Performance and Compatibility
High Flexural Fatigue Resistance: The materials are engineered to endure millions of bending cycles without developing cracks, enhancing longevity and reliability.
Precision Molding: Manufacturing processes guarantee accurate dimensions for a perfect fit and effective sealing against pump housings, minimizing leakage and wear.
Interchangeable Design: These components serve as direct replacements for a variety of pump series, including QBY/K10-15, K25-40, K50-65, and K80-100, facilitating easy upgrades and repairs.
Additional Benefits
Cost-Effective: By extending the service life of pumps and reducing downtime, these materials help to lower maintenance costs and improve operational efficiency.
Color-Coded Options: For specialized requirements such as abrasion resistance, blue polyether (polyurethane) variants are available, offering tailored solutions for demanding applications.
Technical Parameters:
| Maximum Operating Temperature |
100°C (NBR), 150°C (F46), 180°C (PTFE) |
| Outer Diameter |
140mm To 450mm |
| Application |
Oil/Water Transfer, Chemical Processing, Slurry/Mining |
| Material |
NBR, F46, PTFE, Polyether |
| Color |
Black (NBR), White (F46/PTFE) |
| Bolt Hole Pattern |
Plain, 6‑hole, 8‑hole, 10‑hole |
Applications:
Applications
This equipment is suitable for chemical transfer and precise dosing, including the handling of acids, caustics, and various solvents.
It is ideal for the circulation of paints, inks, and coatings, ensuring consistent flow and quality in manufacturing processes.
The system is designed to manage slurry and mud effectively, particularly in mining operations and mineral processing industries.
In the food and beverage sector, the equipment complies with PTFE/FDA standards, making it safe for processing consumable products.
It plays a vital role in the treatment of wastewater and effluent, supporting environmental management and regulatory compliance.
Petroleum and fuel transfer operations benefit from its reliable and efficient fluid handling capabilities.
The pump is well-suited for ceramic production, specifically for the transfer of glazes and related materials.
Pharmaceutical and bioprocessing industries utilize this technology for sanitation and precision in fluid management.
Additionally, it accommodates general industrial fluid transfer needs, including water, oils, and emulsions.
Customization:
Introducing the DKE Pulse Valve Diaphragm, available in model numbers QBY.QBK, QBY3, and ARO, proudly made in China. Certified with CE, this diaphragm ensures high quality and reliable performance for your pulse valve systems.
Our Pulse Valve Diaphragm features an outer diameter ranging from 140mm to 450mm, crafted from durable materials including NBR, F46, PTFE, and Polyether. It is available in black (NBR) and white (F46/PTFE) colors, designed to withstand maximum operating temperatures of up to 100°C (NBR), 150°C (F46), and 180°C (PTFE).
We offer a variety of bolt hole patterns including plain, 6-hole, 8-hole, and 10-hole to suit different installation requirements. Each diaphragm is packaged securely in a carton to ensure safe delivery within 1-7 work days after payment.
Our supply ability is 5000 pieces per month, with a minimum order quantity of just 1 piece. Pricing is negotiable to meet your budgetary needs. Payment terms include T/T, Western Union, and Paypal for your convenience.
In addition to the diaphragm, we provide comprehensive maintenance kits and pulse valve diaphragm repair kits, including diaphragm repair accessories, to support the longevity and efficient operation of your pulse valve systems.
Support and Services:
Our Pulse Valve Diaphragm is designed to deliver reliable performance in demanding industrial environments. For technical support, please ensure that you have the product model number and batch code available before contacting our support team. Our experts can assist with installation guidance, troubleshooting, maintenance tips, and replacement part identification to ensure optimal operation of your pulse valve system.
We offer comprehensive services including product inspection, testing, and repair to extend the lifespan of your diaphragm. Regular maintenance and timely replacement are crucial to prevent system downtime and maintain efficient pulse valve operation. Our technical documentation and user manuals provide detailed instructions to help you achieve the best results.
Should you require customized solutions or have specific application requirements, our engineering team is available to provide tailored advice and support. We are committed to helping you maximize the performance and reliability of your pulse valve diaphragm through expert technical assistance and quality service offerings.
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