AVK Fabricated Coupling DI Pipes PN16
FOR DI PIPES - A4 Stainless Steel fasteners

Jim Marsden
National Sales Manager Mechanical & Fabricated Fittings Water
The Series 258 is a fabricated coupling for Ductile Iron pipes. Maximum Working Pressure: Standard 16 bar - 0.8bar negative pressure. Up to 25 bar on request. Temperature Range: -10°C to +70°C. Insulation essential for temperatures of 0°C and below.
The Series 258 is a fabricated coupling for Ductile Iron pipes with A4 stainless steel fasteners, suitable for use with water and neutral liquids (sewage)
Variant 258/30-016 | |
---|---|
Connection: | Flanged |
Material: | Steel |
DN: | DN450 - DN700 |
PN: | PN 16 |
Features
- Manufactured to suit nominal pipe OD, with a sealing range of: nominal diameter +2mm to - 5mm
- Stainless Steel Grade A4 fasteners
- Corrosion resistant construction
- Fusion bonded epoxy coating
- Short lead times
- EPDM seals
- Maximum Working Pressure: 16 Bar
- Temperature Range: -10°C to +70°C Insulation essential for temperatures of 0°C and below
- Embodied carbon data available upon request
- Options:
- Can be manufactured to suit a specific pipe OD between 269mm and 1200mm. Further couplings to suit pipe OD's between 1200mm and 1600mm available dependent upon application.
- For 25 Bar Version see 258/30-021 datasheet
- Note:
- This fitting is not designed for end load resistant applications
Downloads
Datasheet
Certificate(s)
Installation, Operation & Maintenance
Price list
Reference nos. and dimensions:
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Ref. no. | DP Nom. O.D. mm |
H3 mm |
L mm |
Bolt No. |
Theoretical weight/kg |
---|---|---|---|---|---|
258-30-0406-13000001 | 406 | 513 | 270 | 8 | 32 |
258-30-0429-13000001 | 429 | 536 | 270 | 8 | 33 |
258-30-0480-13000001 | 480 | 587 | 270 | 10 | 36 |
258-30-0507-13000001 | 507 | 38 | |||
258-30-0508-13000001 | 508 | 38 | |||
258-30-0532-13000001 | 532 | 639 | 270 | 10 | 39 |
258-30-0635-13000001 | 635 | 742 | 270 | 10 | 44 |
258-30-0711-13000001 | 711 | 48 | |||
258-30-0738-13000001 | 738 | 845 | 270 | 12 | 51 |
258-30-0945-13000001 | 945 | 1052 | 270 | 14 | 86 |
Enquiry
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Components
1. | Gland ring | Steel S275JR |
2. | Bolts | Stainless steel A4 |
3. | Seals | EPDM |
4. | Body | Steel S275JR |
5. | Washer | Stainless steel A4 |
6. | Nuts | Stainless steel A4 |
Test/Approvals
- Hydraulic test according to 1.5 x PN
- Materials approved according to WRAS
- WRAS approved Materials


