AVK SUPA MAXI™ STRAIGHT COUPLING, PN10

For gas, universal and tensile, NBR sealings, DN50-400

Idriz Rahmanovic, Product Manager at AVK International

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Idriz Rahmanovic

Product Manager, Gas supply

Supa Maxi™ straight coupling - universal & tensile - A2 bolts / A4 nuts for gas -10°C to +60°C

AVK’s Supa Maxi™ range of universal tensile couplings sets a new standard. The patented SupaGrip™ sealing support system with flexible bracket ensures full support of the gasket and full tensile strength on all pipe types up to PN 10. Supa Maxi™ couplings are very easy to mount with the possibility of ±4° angular deflection, the permanent protection caps, the lifting eye and the fact that they are tightened from the sleeve side with no need for re-tightening the bolts.
Variant 631/70-004
Connection: Supa Maxi™ Coupling
Material: Ductile Iron
DN: DN50 - DN400
PN: PN10

Features

  • Patented SupaGrip™ sealing support system with flexible bracket ensures full support of the gasket even at minimum pipe size
  • Full tensile strength on all pipes is ensured by two different metal grip segments - every other of gunmetal for PE/PVC and of hardened stainless steel for cast iron/ductile iron/steel pipes. For PE pipes a support bush is to be used.
  • Metal grip segments are mounted with pins for maximum durability
  • ±4° angular deflection on each side at max. 1.5 x PN 10
  • Large tolerance ranges
  • All DNs are for PN 10
  • Ductile iron body and bracket of cast steel, fusion bonded epoxy coating in compliance with DIN 3476 part 1 and EN 14901, GSK approved
  • Gasket of NBR rubber approved by Gastec
  • Bolts of A2 and nuts of A4 are anti-friction coated to prevent galling
  • Permanent protection caps protect the coupling during handling and installation. They are yellow to indicate gas.
  • The pipe will not move inwards when tightening
  • Bolts are tightened from the sleeve side for full access when space is limited
  • Re-tightening of bolts is not necessary
  • Lifting eye in DN 100-400
  • Working pressure max. 10 bar. Max. test pressure according to pipe standard

Downloads

Datasheet
Installation
Tender Text

Reference nos. and dimensions:

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AVK ref. no. DN
mm
Product
PN Class
Seal range
SR1 mm
L
mm
D
mm
Theoretical
weight/kg
631-071-70-2 50 PN10 48-71 255 200 6.0
631-091-70-2 65 PN10 69-91 265 226 7.0
631-106-70-2 80 PN10 82-106 268 235 7.5
631-133-70-2 100 PN10 104-133 289 268 11
631-161-70-2 125 PN10 132-159 277 285 13
631-188-70-2 150 PN10 159-188 314 340 16
631-227-70-2 200 PN10 193-227 354 389 25
631-257-70-2 225 PN10 224-257 390 437 30
631-301-70-2 250 PN10 266-301 381 476 35
631-356-70-2 300 PN10 314-356 438 545 45
631-442-70-2 400 PN10 392-442 526 661 91
2D/3D drawings
Enquiry
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Components

1. Nut Stainless steel A4
2. Bolt Stainless steel A2
3. Washer Stainless steel A2
4. Grip segment Stainless steel / bronze CC491K
5. Gasket NBR rubber
6. Sleeve Ductile iron
7. Bracket Cast steel
8. Protection cap PE

Standards

  • Designed according to EN 969
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