DIN11864-3 Flange – NKS
DIN 11864-3 Form A range, Dockweiler – Connection flanges for pharmaceutical fluids
Technical data sheets – DIN11864 flanges
The DIN 11864-3 Form A range is designed for high-purity detachable connections in pharmaceutical, biotechnology and food-processing applications.
It meets the requirements of WFI loops, PW water, USP water, API products and processes requiring clean-in-place (CIP) and sterilise-in-place (SIP) connections.
Connection without compromise
The DIN 11864-3 Form A flange is based on a simple, robust principle: mechanical support is provided by metal-to-metal contact, while sealing is provided by an O-ring housed in a machined groove.
The two functions are separate.
There is no wear from compression or shear, no progressive creep and no loss of sealing performance over time.
The O-ring is available in the material suited to the process fluid:
- EPDM
- FKM
- VMQ (PTFE-coated silicone)
- Gylon
It is the benchmark solution for high-purity networks that run repeated CIP/SIP cycles.
Connection types
| Type | Description |
| Type 1 | Threaded with nose |
| Type 2 | Bolted flange |
| Type 3 | Clamp |
See table at the bottom of the page
Available dimensional series
Available in series A, B and C according to DIN 11866, covering European sanitary, ISO/DIN and Imperial ODs.
Surface finishes
Standard finish Ra≤ 0.80 µm.
Electropolished finish down to Ra ≤ 0.25µm available.
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Materials
316L 1.4435 stainless steel with controlled sulphur content, ensuring optimum weldability and resistance to rouging in hot aqueous media.
Available in 1.4404 on request
Traceability and packaging
Each component is supplied with its 3.1 material certificate.
Parts are identified with grade, batch number, heat number and dimensions.