PPDA - FOR BUTT WELDING
Polypropylene Encapsulated Ductile Iron Flange (Butt Welding)
Stu Piping manufactures and supplies the PPDA flange, a corrosion-resistant pipe flange combining a ductile iron core with 30% glass fibre reinforced polypropylene encapsulation. Engineered for butt welding applications with PE, PP, and PVDF stub ends, the PPDA flange is a trusted flange solution across water, gas, mining, marine, and aquaculture industries.
Ideal Applications for the PPDA Flange
- Aquaculture / fish farm piping systems
- Water infrastructure and treatment
- Mining piping systems
- Gas piping applications
- Marine piping installations
Key Benefits of the PPDA Polypropylene Flange
- I-beam cross section for reliable structural support
- 50% lighter than conventional flange backing rings — easier handling, lower freight cost
- Convoluted design maintains bolt tension, reducing re-torqueing needs
- Available from d20mm up to d1000mm
- Safety factor of 2 for dependable pressure performance
- Compatible with both steel and thermoplastic piping systems
- Lower embodied carbon footprint than heavier conventional flanges
- Compatible with both steel and thermoplastic piping systems
Ongoing engineering improvements may affect published technical data. Download the full submittal below for current specifications.
For further information, please email us with your requirements
Polypropylene encapsulated ductile iron(PP/Steel)
STU-P is the most trusted name in the industry, having helped thousands of customers worldwide reduce costs and increase the performance and safety of their flanging systems.
PPDA-Flanges (for butt welding)
Utilisation
For use on PE, PP, PVDF butt welding stub ends.
Materials
Glass-reinforced polypropylene (black) over ductile iron insert (GGG 40, DIN 1693)
Connecting
Drilled to EN 1092, DIN 2501 PN 10/16
Dimensions
DA 20–630: PN10/16 · DA >630: PN10
Info
Connecting dimensions (PN) and maximum operating pressure (bar) are not directly linked. For example, a PPDA flange in size DA 225 is drilled to DIN 2501/EN 1092 PN10, but rated for a maximum operating pressure of 16 bar. Stu Piping recommends the use of washers below the screw head and nut.
Ongoing engineering improvements may affect published technical data. Download the full submittal below for current specifications.
For further information, please email us with your requirements
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