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Ring type joint orifice plate_F300

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Ring type joint orifice plate_F300

Ring type joint orifice plate_F300

Details

Description

A holding ring assembly is a combination of a holder ring and an orifice plate designed for Ring type joint (RTJ) flanges of ANSI or JPI specifications. The holding ring  has  a function of holding the orifice plate and also a function as a gasket to prevent leakage of the process fluid. This metallic sealing system is applicable to a fluid of high temperature and high pressure, the pressure tapping system is normally the flange tap type.

Specification

Orifice bore type Concentric square edged orifice Quadrant edged orifice
Flow calculation standards ISO 5167-1 and 2 2003 AGA-3
ASME MFC-3M and 14M JIS Z 8762
BS 1042
Flange ratings ANSI class 300, 600, 900 and 1,500 Lb
Ring type joint (RTJ)
Pressure taps Flange taps
Plate thickness 3, 6, 9 and 12 mm
Tab handle Welded to ring
Holding ring Riveted to plate
Types : Octagonal or oval
Drain and vent hole Per ASME recommendations
Not drilled for orifice bores smaller than 25.4 mm
Markings Upstream side of tab handle stamped with "Upstream" and with bore type and size, line size, tag number and flange rating
Special markings Special marking may be furnished to meet Specific requirement
Materials Plate : 304SS and 316L SS
Holding ring : Soft lron, 304SS and 316SS
Rivets : 304SS and 316SS
Tab Handle : 304SS and 316SS

 

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