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Way valve manifolds dn 5, Sitrans p measuring instruments for pressure – Siemens SITRANS P User Manual

Page 198

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SITRANS P measuring instruments for pressure

Fitttings - Shut-off valves for gage and absolute pressure transmitters

2-way valve manifolds DN 5

2/198

Siemens FI 01 · 2009

2

Overview

The two-way valve manifold DN 5 (7MF9401-2..) is used to shut
off and vent the line with the measured medium, and to test the
connected pressure gage or transmitter.

Benefits

• Available for aggressive and non-aggressive liquids and

gases

• Two connection versions available

- For flanging to pressure transmitters
- With nipple for connection of pressure gages and pressure

transmitters for pressure

• Max. working pressure 420 bar, with version for oxygen max.

100 bar

Application

The 2-way valve manifold is available in versions for aggressive
and non-aggressive liquids and gases.

Mounting plates are available for wall mounting, for securing to
mounting racks or for pipe mounting.

Design

The 2-way valve manifold DN 5 has 3 connections:

• A process connection (pipe union with ferrule Ø 12 mm)

• A connection for a pressure gage (flange or nipple)

• A test connection (thread G

3

/

8

)

The 2-fold valve manifold DN 5 also has an operating valve and
a test valve, each with an internal spindle thread.

Materials used

2-way valve manifold DN 5 for flanging to pressure transmitters

Function

The characteristic of the pressure measuring instrument or pres-
sure transmitter can be tested through the test connection.

A pressure gage for local display can be connected to the test
connection.

The two-way valve manifold DN 5 can be used in addition to shut
off and vent the line with the measured medium.

Accessories

Accessory set for 2-way valve manifold DN 5 for flanging

• A31: 2 screws

7

/

16

-20 UNF x 2

1

/

8

inch to ASME B18.3,

1 flat gasket

• A34: 2 screws

7

/

16

-20 UNF x 2

1

/

8

inch to ASME B18.3,

1 O-ring (FPM 90)

• A11: 2 screws M10x55 to DIN EN 4762, 2 washers,

1 flat gasket

• A15 (suitable for oxygen): 2 screws M10x55 to DIN EN 4762,

2 washers, 1 flat gasket

• A16: 2 screws M10x55 to DIN EN 4762, 2 washers,

1 flat gasket (FPM 90)

Note: M10 screws only permissible up to PN 160!

Washers Ø 10.5 to DIN 125

Flat gaskets made of PTFE, max. 420 bar, 80 °C

O-ring to DIN 3771, 20 x 2.65 - S – FPM90, max. 420 bar, 120 °C

Mounting plate

Made of electrogalvanized sheet-steel

• M11: For wall mounting or for securing on rack (72 mm grid)

Scope of delivery:
- 1 mounting plate with bolts for mounting on valve manifold

• M12: For pipe mounting

Scope of delivery:
- 1 mounting plate M11
- 2 pipe brackets with nuts and washers for pipes with max.

Ø 60.3 mm

Valve manifold 100 bar, suitable for oxygen

• S12: (only in combination with versions for aggressive liquids

and gases): Suitable for oxygen

For non-aggressive liquids and
gases

For aggressive
liquids and gases

Component Material

Mat. No.

Material

Mat. No.

Housing

P250GH

1.0460

X 6
CrNiMoTi
17 12 2

1.4571/
316Ti

Head parts C 35

1.0501

Spindles

X 12 CrMoS 17

1.4104

Cones

X 35 CrMo 17 hard-
ened and tempered

1.4122

Valve seats X 6 CrNiMoTi 17 12 2

1.4571/316Ti

Packings

PTFE

-

PTFE

-

© Siemens AG 2008