AVK Repair clamp Type FST20 (NAVEWA)

Fingers 5cm, stainless steel 304L, EPDM rubber, vulcanized spanner plate

Industrial Netherlands building


AVK Industrial Nederland BV

Schorsweg 1 8171 ME Vaassen Netherlands

FST20 - Double band stainless steel repair clamp with flanged branch for water -40° C up to +120° C

AVK repair clamps ensure a cost effective and reliable solution for quick repairs on steel, copper, asbestos cement, cast iron, PVC and GRP pipes. A pipe with a hole or crack will be repaired permanently. The stainless steel repair clamps are passivated in order to ensure an optimum corrosion resistance. The repair clamps are provided with a waffle structured rubber gasket and rounded tops to create a fully circumferential seal.

Variant 748/32-1212
Connection: All Pipe Types
Material: Stainless steel
DN: DN150 - DN350


  • Clamp of a pre-rolled plate of stainless steel 304L.
  • Design with welded stainless steel 304L studs (50 mm center to center) and welded 304L fingers
  • Clamp is completely pickled and passivated after welding
  • Clamp is manufactured with flanged branch
  • Stainless steel nuts: A4 quality with anti-friction through yellow passivation to prevent galling
  • Gasket of EPDM rubber with waffle structure and rounded tops
  • Vulcanized spanner plate
  • Tolerance of double band repair clamp is max. 24 mm (depends on diameter pipe)
  • Clamps available in different diameters: DN 80 up to DN 600
  • Clamps available in different lenghts: 200, 250, 300, 400, 500 and 600 mm (other lengths on request)
  • Indication pressure class for water: 24 bar for DN 80 up to DN 150, 16 bar for DN 175 up to DN 450 and 10 bar from DN 500


Product Brochure
AVK_ Repairclamps_2022.mp4

Reference nos. and dimensions:

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AVK ref. no. T
Flange DN
DN mm
748-32-015930-121254 159 - 180 300 DN80 12XM14X180 12
748-32-016550-121254 165 - 186 500 DN80 20XM14X180 18
748-32-019550-121254 195 - 217 500 DN80 20XM14X180 18
748-32-026340-121255 263 - 285 400 DN100 16X M14X18 18
748-32-029540-121254 295 - 315 400 DN80 16XM16X180 20
748-32-031550-121257 315 - 335 500 DN150 20XM16X180 22
748-32-036540-121255 365 - 385 400 DN100 16X M16X18 23
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1. Finger Stainless steel AISI 304L
2. Stud Stainless steel AISI 304L
3. Nut Stainless steel A4, anti friction
4. Washer Stainless steel A4
5. Bridge Stainless steel AISI 304L
6. Lining EPDM rubber
7. Body plate Stainless steel AISI 304L
8. Spanner plate vulcanized Stainless steel AISI 304L
9. Side plate Stainless steel AISI 304L
10. Pipe Stainless steel AISI 304L
11. Seal EPDM rubber
12. Flange Stainless steel AISI 304L


  • Tested by KIWA according to BS8561
  • WRAS / W270 approved rubber
  • Product approved acc. to KIWA BRL-K777
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