Viking Johnson MaxiFit Coupling for ductile iron, steel and PVC pipes, d 689-706 mm [Code number: MF689]

Application purpose:

• For connection pipes made of cast iron, steel, PVC, as well as some other materials (pipes made of PE are mounted using a sleeve) in various combinations
• For neutral liquids at permissible operating temperature + 50 °С

Characteristics:

• Working pressure up to 16 bar (water) and up to 6 bar (gas)
• One type of pipe coupling made of different materials
• The design provides easy and quick installation
• The gap between the ends of the pipes is necessary to: compensate for thermal expansion, prevent transmission of vibration, compensate for sedimentation and facilitate installation/dismantling

Installation:

• Pipes are inserted into a freely assembled freely assembled coupling, with a gap between the ends of the pipes of about 20 mm (chamfering not required)
• Pressure ring bolts tighten all the way

Materials:

• Pressure ring and adapter housing / Center pipe: Rolled steel according to British standard BS EN 10025-2: 2004 Grade S275
• Bolts: Steel according to BS EN ISO 898-1: 2009. Material category 4.8
• Nuts: Steel according to British standard BS EN 4190: 2001 Grade 4
• Washers: Stainless steel in accordance with BS 1449: Part 2: 1983. Grade 304 S15
• Sealing collar: EPDM