Chapter 3. Installing An Isolation Valve; Introduction; Valve Installation For 3-Inch Flanges - GE T17 Installation Manual

Ultrasonic flow transducer

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Chapter 3.

Installing an Isolation Valve

3.1

If one has not already been installed, follow the instructions in this chapter to install an isolation valve on each

transducer nozzle for applications using the flare gas insertion mechanism. As the procedure is identical for all path

configurations and flange sizes, only one installation configuration is described here as an example.

3.2

Refer to Figure 66 below and install 3-inch ANSI flanged full-bore isolation valves on both transducer nozzles with a

gasket, studs and nuts. Orient the valve handles to minimize interference. Note the following requirements:

•

150# RF flanges:

•

300# RF flanges:

Model T17 Installation Guide

8 in. face-to-face distance, 5/8 in. diameter studs and nuts

11.125 in. face-to-face distance, 3/4 in. diameter studs and nuts

UPSTREAM

TRANSDUCER PORT

GASKET

FLOW

Figure 66: Standard Isolation Valve Installation

3 INCH 150 LB, RF WELDING NECK FLANGE

2 PLACES; REF ONLY

3 INCH SCH 80 PIPE NOZZLE

2 PLACES; REF ONLY