Siemens SITRANS P - Manual (Page 228)

SITRANS P measuring instruments for pressure
Fittings - Accessories
Water traps, Sealing rings to EN 837-1
2/228 Siemens FI 01 · 2009
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Overview
Water traps protect pressure gages and shut-off fittings from
heating up (e.g. by steam) by the water column produced by the
water trap.
The max. working temperature is 120 °C at 160 bar, 300 °C at
80 bar or 400 °C at 63 bar. If the temperature of the measured
medium is higher, a sufficiently long line has to be connected up-
stream of the trap to enable heat dissipation.
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Design
The water traps are available in U shape (type B) or circular
shape (type D) to DIN 16282. They have a weld-on end
Ø 20 mm
× 2.6 mm on the measurement side. The connection
on the device side is a clamping sleeve G½ to DIN 16283.
The water traps are made of steel (P250GH) or stainless steel
(X 6 CrNiMoTi 17 12 2)
Water traps are designed as standard for max. operating tem-
perature 120 °C at max. operating pressure 160 bar (300 °C at
80 bar, 400 °C at 63 bar). Water traps for higher operating pres-
sures and temperatures are available on request.
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Dimensional drawings
Water traps, type B, M56340-A0043/-A0061, dimensions in mm
Water traps, type D, M56340-A0045/-A0063, dimensions in mm
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Overview
The sealing rings to EN 837-1 are required to seal measuring in-
struments for pressure with the process connection G½B.
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Dimensional drawings
Sealing ring 7MF9007-7A. to EN 837-1, dimensions in mm
F) Subject to export regulations AL: 9I999, ECCN: N.
Selection and Ordering data Order No.
Water traps
for pressure gages and pressure transmitters,
max. working temperature 120 °C,
max. working pressure 160 bar (or 400 °C
and 104 bar), weight 0.7 kg
Water trap B to DIN 16282
Material Mat. No.
P235GH 1.0345 M56340-A0043
X 6 CrNiMoTi 17 12 2 1.4571/316Ti M56340-A0061
Water trap D to DIN 16282
Material Mat. No.
P235GH 1.0345 M56340-A0045
X 6 CrNiMoTi 17 12 2 1.4571/316Ti M56340-A0063
Selection and Ordering data Order No.
Sealing ring to EN 837-1 for thread G ½
made of
(packing unit 100 pcs)
• copper F) 7MF9007-7AA
• soft iron F) 7MF9007-7AB
• stainless steel, mat.-No. 1.4571 F) 7MF9007-7AC
• PTFE F) 7MF9007-7AD
© Siemens AG 2008