Siemens Way valve manifold DN, 209, Component Material Mat. No Housing P250GH 0460 4571

	© Siemens AG 2008
	SITRANS P measuring instruments for pressure
	Fitttings - Shut-off valves for differential pressure transmitters
			3-way valve manifold DN 8
■Overview		■Function
			The 3-way valve manifold DN 8 performs two functions as stan-
			dard:
			• Shutting off the differential pressure lines
								2
			• Checking the pressure transmitter zero
			All versions are also available with a test connection, to which a
			test device for checking the pressure transmitter characteristic
			can be connected.
			Selection and Ordering data	Order No.
			3-way valve manifold DN 8	7	M F 9 4	1 6 -	77 A
			for flanging to pressure transmitters for differ-
			ential pressure, max. working pressure
			420 bar, (order accessory set and mounting
			plate with Order code), without certificate

for non-aggressive liquids and gases procedss connection: Pipe union with ferrule

The 3-way valve manifold DN 8 (7MF9416-1../-2..) is for pressure transmitters for differential pressure. It is used to shut off and blow out differential pressure lines and to test the pressure trans- mitter zero.

In the designs with a test connection, a test device can be con- nected to test the pressure transmitter characteristic.

■Benefits

•For aggressive and non-aggressive liquids and gases

•The maximum working pressure is 420 bar.

■Application

The 3-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.

• without test connection	1	B
• with test connection	1	C
for non-aggressive liquids and gases
procedss connection: Welding pin Ø 14 x 2.5
• without test connection	2	C
• with test connection
	2	D
for aggressive liquids and gases
process connection: Pipe union with ferrule
• without test connection	1	D
• with test connection	1	E

Accessories

Factory test certificate EN 10204–2.2	7MF9000-8AB
Material acceptance test certificate
	7MF9000-8AD
EN 10204-3.1

■Design

For the process connection on the version for non-aggressive media it is possible to choose between a pipe union with ferrule and welding pins.

The version for aggressive media always has a pipe union with ferrule.

Both versions are available optionally with a test connection M20x1.5.

The valves have an internal spindle thread.

Materials used

	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	-

Siemens FI 01 · 2009

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