3.2.15

A

Steam

saturation

curve

C

Pressure/temperature limits

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A - B

A - D

A - C

Materials

Part

Material

Body

Carbon steel

Internals

Mostly stainless steel

Spring

Inconel X750

Performance

ASTM A105 / A106 / A234

S304 / S316

Pressure bar g

The product must not be used in this region.

Flowmetering

Gilflo and ILVA flowmeters

Local regulations may restrict the use of this product to below the conditions quoted.

In the interests of development and improvement of the product, we reserve the right to change the specification without notice.

© Copyright 2013

High DP tapping

DN200, DN250, DN300 and DN400 flowmeters incorporate an

additional shaft support together with a revised spring location.

TI-P337-08

MI Issue 7

Gilflo 'B' Flowmeter

Pipeline Unit

Description

The Gilflo 'B' flowmeter is installed in the pipeline and produces a

differential pressure which is related to the rate of flow. It can be used with

most industrial fluids, gases and both saturated and superheated steam.

Sizes and pipe connections

DN50*, DN80, DN100, DN150, DN200, DN250, DN300 and DN400

Flanges available to EN 1092 PN40* and ASME B 16.5 class 300.

* Note - DN50 flowmeter: flanges on the PN40 are thicker (to ASME 300,

22.2 mm) to accommodate pressure tappings.

On the DN400 flowmeter, the pressure tappings are on the body.

Low DP tapping

Note:

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When used in conjunction with a Spirax Sarco flow computer,

accuracy is better than ±1% of actual flow from 5% to 100%

of maximum rated flow. For flows from 1% to 5% of maximum

rated flow, accuracy will be better than ±0.1% FSD.

Repeatability is better than 0.25%. Note: the accuracy figures

quoted are for the pipeline unit only.

Caution: Scanner 2000 steam mass flow transmitters are

uniquely configured at the factory to work with a single specific

Gilflo flowmeter. For correct operation the configured Scanner

2000 transmitter must always be installed with its allocated

flowmeter. Labels on the packaging give the serial numbers

of the matched products.

Pressure drop

Less than 349 m bar (140 inches H

2

O) at rated capacity.

Flow capacity

To determine the maximum flow capacity of a Gilflo 'B', it is necessary

to calculate the equivalent water flowrate (Q

E

). See under section

"Sizing the Gilflo 'B' flowmeter".

D

B

Flanged ASME 300 DN50-DN300

Flanged ASME 300 DN400

Flanged EN 1092 PN40

Body design conditions

PMA Maximum allowable pressure

TMA Maximum allowable temperature

Minimum allowable temperature

PMO Maximum operating pressure

Minimum operating pressure

TMO Maximum operating temperature

ASME 300

50 bar g @ 50°C

450°C @ 20 bar g

0°C

50 bar g @ 50°C

DN400 49 bar g @ 50°C

0.6 bar g

450°C @ 20 bar g

Minimum operating temperature

Note: For lower operating temperatures consult Spirax Sarco.

0°C

30 centipoise

349 m bar

78 bar g

60 bar g

Maximum viscosity

DPMX Maximum differential pressure

Designed for a maximum cold

ASME

hydraulic test pressure of:

PN40

T

e

m

p

e

r

a

t

u

r

e

°

C