Siemens SITRANS P Manual de usuario descargar pdf (Pagina 174)

SITRANS P measuring instruments for pressure

Flushing rings

For diaphragm seals

2/174

Siemens FI 01 · 2009

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Overview

Flushing ring

Flushing rings are required for flange-mounted and sandwich-

type remote seals (Order No. 7MF4900 ... 7MF4923) if the dan-

ger exists that the process conditions and the geometry of the

connection could cause the medium to form deposits or block-

ages.

The flushing ring is clamped between the process flange and

the remote seal.

Deposits can be flushed away from the diaphragm through the

holes in the side, or the pressure volume can be vented. Different

nominal diameters and forms permit adaptation to the respec-

tive process flange.

Process connection

For flanges to EN and ASME:

DN 50, 80, 100, 125; PN 16

... 100 or

DN 2 inch, 3 inch, 4 inch, 5 inch; Class 150

... 600

Standard design

Material: CrNi-Stahl, mat. No. 1.4404/316L

Sealing faces and flushing holes: See Selection and Or

dering

data

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Design

Installation example

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Technical specifications

Dichtung

Spülring

Measuring

point flange

Flushing outlet

Remote seal flange

Gasket

Flushing inlet

Flushing ring

Flushing ring for remote seals of sandwich and flange design

Nominal diameter Nominal pressure

• DN 50 PN 16 ... PN 100

• DN 80 PN 16 ... PN 100

• DN 100 PN 16 ... PN 100

• DN 125 PN 16 ... PN 100

• 2 inch Class 150 ... class 600

• 3 inch Class 150 ... class 600

• 4 inch Class 150 ... class 600

• 5 inch Class 150 ... class 600

Sealing face

• To EN 1092-1 Form B1

Form B2

Form D/Form D

Form C/Form C

Form E

Form F

• To ASME B16.5 RF 125 ... 250 AA

RFSF

RJT ring groove

Flushing holes (2 off), female

thread:

•G¼

•G½

•¼-18NPT

•½-14NPT

Material Stainless steel 1.4404/316L

1 2 ... 169 170 171 172 173 174 175 176 177 178 179 ... 233 234

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