Flexible Flanged Concentric Butterfly Valve

Name: Flexible Flanged Concentric Butterfly Valve
Brand: ZECO Valve Group

Basic information of Flexible Flanged Concentric Butterfly Valve

This valve is suitable for intercepting and adjusting the general corrosive, non-corrosive gas, liquid, semifluid, and solid powder media, and also can be used as replacement products for old pipeline renovation, maintenance, and matching valves.

Dof960 series of cases

Features of Flexible Flanged Concentric Butterfly Valve

1. Short connection size saves space;
2. No extenders required, cost savings;
3. High-quality rubber material ensures seal performance;
4. Easy to operate.

Principle of Flexible Flanged Concentric Butterfly Valve

This valve is a flange connection, its main characteristic is the structure length can expand, is advantageous installs on the long pipeline to absorb the hot expansion cold shrinkage or the balance pipeline vibration influence, because has the long stretching leeway, therefore omitted the expansion and contraction. Cylindrical channels in butterfly valve body, disc around the axis of rotation, rotation Angle for 0 ° ~ 90 °, rotate to 90 °, the valve is fully open.

Installation and Commissioning of Flexible Flanged Concentric Butterfly Valve

The concentric butterfly valve is long stored, should be kept in a cool and dry place, valve plate in an open state of 5 ° ~ 10 °, seal and cover on both ends, with the packing can be overlapped implantation, disc installed in pipeline diameter direction, average installation. For specific use, please consult ZECO Valve Group.

Part	Material	Standard
Body	Ductile Iron	EN 1563/DIN 1693
Expansion Piece	Ductile Iron	EN 1563/DIN 1693
Trim	Stainless Steel 431	EN10088-1/ASTM A959
Seat	Stainless Steel 431	EN10088-1/ASTM A959
Sealing	EPDM / NBR	ISO 4633
Worm Actuator	Ductile Iron	EN 1563/DIN 1693
For the materials options not listed, consult factory. ZECO manufactures valves in more than 50 different alloys.

Product scope, Standards & Materials of Flexible Flanged Concentric Butterfly Valve

Size Range: 2"~48"
Pressure Rating: 10bar ~ 25bar
Face to Face Dimensions: AMSE B16.10, EN558-1
Flange End Dimension: AMSE B16.1/16.42, AS4087, EN1092-2
Coating: Fusion Bonded Epoxy Coating
Inspection and Test: ISO 5208 / EN 12226-2

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