Swivel-Ring Flange

Swivel Ring Flange (SRF) is the most commonly used flange for shallow water pipeline repairs. The SRF allows the diver to line up bolt holes with the mating weld neck flange. This significantly reduces the time needed to complete the repair operation.

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Description

The SRF utilizes a spring steel retainer ring to capture the rotating flange component of the connector, thus eliminating welded retainers and permitting the removal of the retainer ring. This also makes it possible to clean and lubricate the swivel ring interface between the hub and flange after fabrication and coating to ensure easy rotation during installation

 

The alignment of bolt holes is very important in underwater connection of submarine pipeline. The outer ring of the rotating flange allows 360 "free rotation centered on the inner ring to quickly align the bolt holes with the paired standard flange for accurate positioning and easy installation.

DATASHEET:

◆Nominal pipe Size (NPS):2” to 48”

◆Service: standard (such as crude oil, natural gas, tensioning compounds, water and chemical agent injection, etc.) and acidic (such as hydrogen sulfide,Co2, etc.)

◆Design pressure and construction size :ASME, MSS or API

◆Design temperature :(-4℃) ~ (121℃)

◆Material:A105,ASTM A516 Gr. 70,A350 LF2,A694 F52/F65/F70/F80/A182 F304/F316/F321/F51/F53/F55 Nickel alloy

◆Coating:F.B.E, Carboline, etc. as required

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