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Dual chamber orifice fitting FPD212
FPD212 is dual-chamber orifice fitting, suitable for fiscal (custody transfer) applications. Subject to customer’s own protocols, these fittings may enable orifice plates to be inspected and / or replaced without removing the fitting itself from the pipeline.
The FPD212 dual-chamber orifice is a proven system for safely and
quickly inspecting and changing orifice plates. Orifice meters used
in the Oil & Gas industry are typically of either the
single-chamber or dual-chamber design.
Single-chamber orifice fittings have an orifice plate that can be
replaced without removing the fitting from the pipeline. However,
before the plate can be withdrawn, the flow must be stopped and the
pipeline vented.
Dual chamber orifice fittings such as the FPD212 have an extra
chamber into which the orifice plate is first withdrawn; this
chamber is then isolated from the pipeline. This means that the
flow in the pipeline does not necessarily have to be stopped to
enable removal and refitting of the orifice plate and, although the
second chamber must be vented, there is no requirement to vent the
pipeline section.
The FPD212 dual chamber fitting can – subject to the operator’s own
protocols – sometimes allow the orifice plate to be inspected or
changed whilst the line is still pressurised.
However a safer and more industry-accepted meter to use in those
situations is the FPD220 Double Block & Bleed Dual chamber
meter
The features of the FPD212 are :
