Screws; Meter Housing Material - RMG TME400-VMF Operating Manual

1 Introduction
1.4.2.2.
Pressure
levels
24
up to and Screws according to
including DIN EN ISO 4014
40 bar in material 5.6
Nuts according to
DIN EN ISO 4032
in material 5-2
40 bar or Threaded bolts
according to
higher
ANSI B1.1
material
ASTM A 193 degree
B7,
Nuts according to
ANSI B1.1
material
ASTM A 194 degree
2H,
Note
Reduced shaft screws must only be used for devices in the area of applica-
tion of the Pressure Equipment Directive.
The durability of the flange connection was verified using the screws listed in this
chapter in combination with the seals listed in the previous chapter with the following
maximum material characteristic data according to AD200 rules and regulations.
Other screw/flange variants were not tested.
Malfunctions can occur with incorrect seals.
1.4.2.3.
Cast steel or round steel material, depending on the pressure level and nominal di-
ameter. Aluminum for the screw-type version.
Manual TME400-VMF · EN02 · 2018 September 6th

Screws

Temperature ranges for screws and nuts
-10°C to +80°C
Screws according to
DIN EN ISO 4014
in material 25CrMo4,
Nuts according to
DIN EN ISO 4032
in material 25CrMo4
Threaded bolts
according to ANSI
B1.1
material
ASTM A 320 degree
L7,
Nuts according to
ANSI B1.1
material
ASTM A 320 degree
L7,

Meter housing material

-40°C to +80°C
Option 1 Option 2
Threaded bolts
according to AN-
SI B1.1
material
42CrMo4
Nuts according to
ANSI B1.1
material
42CrMo4
Option 3
Reduced shaft screws
according to DIN 2510
material
25CrMo4,
Nuts according to
DIN 2510
material
25CrMo4