Brooks MT3809G - Typical Bypass Installation

Installation and Operation Manual
X-VA-MT3809G-MT3810G-eng
Part Number: 541B182AAG
July, 2018
Models MT3809G & MT3810G
ow path. Loose pieces can cause obstruction inside the
measurement section of the meter, and potentially even blockage of
the measurement oat within the measurement tube.
iii. For ETFE lined meters:
Select bolts and gaskets (customer supply) in keeping with the ange
pressure rating or the operating pressure. Also note corrosion
resistance and thermal stability.
Important: the inside diameter of the anges deviates from the
standard dimensions. Enlarge the ange gaskets to the appropriate
size.Align gasket and tighten nuts using the torques specied in
Table 2-1
Important: PTFE is deformable under pressure in the cold state. Do
not exceed maximum torque.
d. Install the owmeter within 5° of true vertical. Use of a level is
recommended to determine the proper alignment.
e. When the process temperature is 300°C / 572°F or above
insulation is required on the meter body and anges. The
insulation is installed between the indicator housing and the
body and anges. Do not wrap the indicator with insulation.
Figure 2-1 Typical Bypass Installation
Table 2-1 Maximum Torques Model MT3809 ETFE
Recommended insulation materials are calcium silicate, cellular glass
or mineral wool with a thermal conductivity of .083 W/m-K at 300°C /
572°F.
DIN
DN PN inch lb 150lb 300lb Nm ft.lbs
15 40 1/2" 150/300 4x M12 4x 1/2" 4x 1/2" 3.4 2.5
25 40 1" 150/300 4x M12 4x 1/2" 4x 5/8" 6.5 4.8
40 40 1,5" 150/300 4x M16 4x 1/2" 4x 3/4" 13.6 10
50 40 2" 150/300 4x M16 4x 5/8" 8x 5/8" 23.6 17.4
DIN ASME ASME
Connection size Stud bolts Max. torque