Siemens SITRANS P - Manual (Page 212)

SITRANS P measuring instruments for pressure
Fitttings - Shut-off valves for differential pressure transmitters
Valve manifold combination DN 5/DN 8
2/212 Siemens FI 01 · 2009
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Overview
The valve manifold combination DN 5/DN 8 (7MF9416-6..) is for
pressure transmitters for differential pressure.
The combination is used to shut off and blow out differential
pressure lines and to test the pressure transmitter zero.
In the designs with a test connection, a test device can be con-
nected to test the pressure transmitter characteristic.
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Benefits
• Max. working pressure 420 bar
■
Application
The valve manifold combination DN 5/DN 8 is designed for va-
pors.
■
Design
The valve manifold combination DN 5/DN 8 has a process con-
nection with welding pins.
The connection for the pressure transmitter is designed as as
flange connection, while the blow-out connection is designed as
a pipe union with ferrule.
The manifold valves have an internal spindle thread, while the
blow-out valves have an external spindle thread.
The optional test connections are M20x1.5.
Materials used
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Function
• Shutting off the differential pressure lines
• Blowing out the differential pressure lines
• Checking the pressure transmitter zero
As an option it is possible to order a version with a test connec-
tion, to which a test device for checking the transmitter charac-
teristic can be connected.
Valve manifold DN 5 Blow-out valves DN 8
Component Material Mat. No. Material Mat. No.
Housing P250GH 1.0460 16 Mo 3 1.5415
Head parts C 35 1.0501 21 CrMo V57 1.7709
Spindles X 12
CrMoS 17 1.4104 X 20 Cr 13 1.4021
Cones X 35
CrMo 17 1.4122 X 35
CrMo 17
hardened
and tem-
pered 1.4122
Valve seats X 6 CrNiMoTi 1.4571/316Ti X 20 Cr 13 1.4021
Packings PTFE - Pure
graphite -
Welding pins - - 16 Mo 3 1.5415
Selection and Ordering data Order No.
Valve manifold combination DN 5/DN 8 for
vapors 7 M F 9 4 1 6 - 6 7 A
for flanging to pressure transmitters for differ-
ential pressure, max. working pressure
420 bar, also available in stainless steel on
request (order accessory set with Order
code), without certificate
• without test connection C
• with test connection M20 × 1.5 D
Accessories
Factory test certificate EN 10204–2.2 7MF9000-8AB
Material acceptance test certificate
EN 10204-3.1 7MF9000-8AD
Selection and Ordering data Order code Order No.
Further designs
1)
1) When ordering accessory set together with the valve manifold combina-
tion, please use Order code; otherwise use Order No.
Please add "-Z" to Order No. and
specify Order code.
Accessory set to EN
(required for flanging, weight 0.2 kg)
4x screws
7
/
16
-20 UNF x
2 1 /
8
inch to ASME B18.2; chromized
steel
2x O-rings to DIN 3771,
20 x 2.65 - S - FPM90,
max. permissble 420 bar, 120 °C
B34 7MF9410-5CA
Accessory set to DIN 2)
2) Flange connections to DIN 19213 only permissible up to 160!
(required for flanging, weight 0.2 kg)
4x screws M10x55 to DIN EN 24014;
chromized steel
4x washers Ø 10.5 mm to DIN 125;
2x O-rings to DIN 3771,
20 x 2.65 - S - FPM90, max. permiss-
ble 420 bar, 120 °C
Flange connection to DIN 19213
only permissible up to PN 160! B16 7MF9010-6CC
© Siemens AG 2008