KDV Flow’s DN65 stainless steel weir diaphragm valves offer a dependable solution for fluid control in sectors where chemical resistance, hygiene, and valve longevity are mandatory. Manufactured to international specifications, these valves are tailored for use in systems handling aggressive media or requiring sanitary-grade materials.
Frequent valve wear and premature failure are common challenges in processing plants using corrosive media. These DN65 units are built to handle such conditions, offering an extended operational lifespan.
With over 40 years supporting critical industries across Europe and Southeast Asia, KDV Flow continues to supply robust diaphragm valve assemblies trusted in chemical, pharmaceutical, and food-grade environments.
Specifications and Performance Standards
The DN65 stainless steel weir valve complies with EN 558-1 Series 1 face-to-face dimensions, ensuring compatibility with standard pipeline configurations. The stainless steel body is paired with high-performance linings such as EPDM or PTFE, depending on application requirements.
This valve is rated for pressure classes up to PN10 and can tolerate operating temperatures ranging from -10°C to 120°C depending on diaphragm and lining material. All units are tested to PED (Pressure Equipment Directive) compliance and available with 3.1 material certification upon request.
Typical Installations and Industry Use
These valves are widely installed in processing systems across chemical treatment facilities, mining operations, and water purification units. Their design supports clean shut-off, minimal dead space, and reliable isolation — key attributes in both aggressive and hygienic systems.
The DN65 weir type valve integrates well into dosing lines, recirculating loops, and filtration modules. In many instances, it replaces legacy valves where lining degradation or seat wear has become an issue. For similar applications, our rubber-lined weir diaphragm valves are also commonly specified in harsh chemical processing environments.
Construction Materials and Engineering Value
The stainless steel build provides strong resistance to pitting and corrosion, especially in chlorinated or acidic environments. Combined with weir-style flow geometry, the valve enables controlled throttling while maintaining diaphragm integrity over extended cycles.
Diaphragms are typically available in EPDM, FKM, or PTFE options — each selected to suit application demands such as CIP compatibility or chemical abrasion. The bonnet assembly can be upgraded with visual indicators, limit switches, or automated actuation systems to suit process requirements.
This model’s low-maintenance design includes bolted body closure and easy diaphragm replacement, ideal for reducing downtime in production lines.
Installation & Lifecycle Support
To maximise service life, it’s recommended to ensure correct alignment during installation and inspect diaphragm wear annually under standard duty cycles. KDV supplies full installation guides and provides ongoing support across its service network, including spare kits stocked in regional warehouses.
FAQs – DN65 Weir Type Stainless Steel Diaphragm Valve
Q1: What makes this valve suitable for corrosive services?
The stainless steel body and PTFE/EPDM lining offer excellent resistance to aggressive chemicals and scaling.
Q2: Can the valve be automated?
Yes, the bonnet is compatible with pneumatic and electric actuators, including options for feedback sensors and PLC integration.
Q3: How does this compare to older diaphragm valves?
It offers better chemical resistance, longer service intervals, and improved compatibility with modern automation systems.
Q4: Are replacement parts widely available?
Yes. Diaphragms and actuator components are supported globally via KDV’s logistics hubs in Europe, Australia, and Southeast Asia.
Q5: What are the available customisation options?
Clients may specify lining type, end connection (flanged, threaded, or clamp), bonnet material, and automation accessories.
Field Success: European Chemical Plant Installation
Installed in a mid-size chemical processing facility in Germany, the DN65 stainless steel weir valves replaced legacy units with failing linings. Within six months, the client reported a 22% reduction in maintenance-related downtime, citing improved sealing and simplified diaphragm replacement.
Request Details or a Specification Pack
KDV’s DN65 weir valves offer durable, adaptable service for demanding environments. To learn more, request a datasheet, or speak with a valve engineer, contact us directly or visit KDV Flow DN65 Product Page.
