38
Orifice Plate Installation
Section 2: Installation
Owner and operator manual
January 2015
3-9008-001 Rev M
2.10
Orifice Plate Installation
After completion of the commissioning line pressure test in
, install and lower the
Plate Carrier (8DM or 8DMC) and Orifice Plate Assembly (13) into the Body (4) to begin
measurement operations.
Orifice Plate (13) installation start checklist:
•
Senior is at atmospheric pressure
•
The Slide Valve Shaft (5) must be in the “OPEN” position
•
The Equalizer Valve (1) must be in the “OPEN” position
•
The Bleeder Valve (10B) must be in the “OPEN” position
1.
Remove the Clamping Bar (12 or 12HP) by loosening all the Clamping Bar Screws (11),
two turns maximum, and by sliding the bar from the slot.
2.
Remove the Sealing Bar (9 or 9HP) and the Sealing Bar Gasket (9A, 9A-HP or 9CF).
3.
The three basic components of all Daniel Plate Carrier (8DM or 8DMC) assemblies are:
-
Plate Carrier (8DM or 8DMC)
-
Orifice Plate Seal Ring (8E-DS/8E-DSC, 8TS/8TSC, or 8E-DVS)
-
Orifice Plate (13)
Assemble the Orifice Plate (13), with the appropriate seal ring, into the Plate Carrier
(8DM or 8DMC). If a DSC or DS seal is used, lubricate both seal faces with a safe-for-
service light oil or grease. Refer to “Senior Orifice Fitting Technical Guide: DAN-DIF-TG-
11-1003 “.
4.
All 2”-8” Daniel Senior Orifice Fitting Plate Carriers (8DMC) designed for AGA #3 - API
14.3 have two important features that will help field technicians properly align it prior
to installation. The first feature is a NOTCH, and the second feature is a BOSS or SPRING
PLUNGER. (Refer to
In order to ensure correct measurement and to optimize metering performance, field service
technicians must properly install the 2”-8” Plate Carrier (8DMC) assembly into the Senior.
EXPLOSION HAZARD
Ensure that the Daniel Senior Orifice Fitting is at atmospheric pressure.
Performing the Orifice Plate (13) installation with the Senior above atmospheric pressure may
lead to an explosive release resulting in serious injury or death.
