In this Paragraph, I am going to talk about V-Flex Connectors. They are designed to absorb thermal expansion or contraction, or for seismic isolation of steel pipe or copper tube installations. The braided metal hose elements that are incorporated into the design offer benefits that are not available in other products that are used for these applications, and the unique Dannenbaum LLC “V” configuration provides advantages over other metal hose connectors. Contact Us for a quote or more information.
Thermal Expansion Applications
V-Flex Connectors are available as standard products for 1/2″ through 4″ nominal pipe size with stainless steel braided hose and steel fittings – flanged, weld end or grooved. Design conditions are 150 psig and 500ºF with a choice of 2″, 3″ or 4″ of travel.
V-Flex Connectors installed for seismic separation require an Intermediate Anchor on each side if the separation that is no greater than the overall length of the V-Flex (Tables 3 & 4) plus four pipe diameters on each side. If the separation is greater, an alignment guide must be installed within four pipe diameters from the V-Flex.
The alignment guide spacing tabulated in Tables 1 & 2 was calculated in accordance with the recommendations of the Standards of the Expansion Joint Manufacturers Association solely on the basis of the V-Flex spring force. Alignment guides do not provide support for the weight of the system, and it may be necessary to install additional guides for long flexible runs to ensure alignment.
Guides, Supports, Anchors
V-Flex Connectors require anchors, guides and supports. Refer to Thermal Expansion Applications (links to Thermal Expansion Applications in V-Flex Text) or Seismic Applications (links to Seismic Applications in V-Flex Text) for the guide and anchor requirements. It may be necessary to support the center elbow of the connector- refer to the illustrations of horizontal and vertical installations.
The flow can be in either direction.
POST INSTALLATION INSPECTION
- Inspect the connector for damage with special attention to the wire braid.
- Is the connector at the correct location as specified?
- Are the anchors and guides correctly installed? Are the guides free to move?
- Confirm that the connector length is correct.
- Confirm center elbow of the connector supported.