Siemens P technical specifications Way valve manifolds DN, 198

© Siemens AG 2008

SITRANS P measuring instruments for pressure

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

2-way valve manifolds DN 5

■Overview

2

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 G3/8)

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

■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 21/8 inch to ASME B18.3, 1 flat gasket

•A34: 2 screws 7/16-20 UNF x 21/8 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

Materials used

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

	For non-aggressive liquids and		For aggressive
	gases		liquids and gases
Component	Material	Mat. No.	Material	Mat. No.
Housing	P250GH	1.0460	X 6	1.4571/
			CrNiMoTi 316Ti
Head parts	C 35	1.0501
			17 12 2
Spindles	X 12 CrMoS 17	1.4104
Cones	X 35 CrMo 17 hard-	1.4122
	ened and tempered
Valve seats	X 6 CrNiMoTi 17 12 2	1.4571/316Ti
Packings	PTFE	-	PTFE	-

2/198

Siemens FI 01 · 2009