Product Handbook 2026 - Volume 1

Flowmetering Gilflo and ILVA flowmeters 3

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 2025

TI-P337-46 EMM Issue 6

ILVA Flowmeter DN250 and DN300

Description The ILVA flowmeter operates on the spring loaded variable area principle and produces a differential pressure related to the rate of flow. It can be used with most industrial fluids, gases and both saturated and superheated steam. A general description of the ILVA flowmetering system and its associated equipment is given in a separate TI sheet. Sizes and pipe connections DN250 and DN300 (10" and 12"). For DN50, DN80, DN100, DN150 and DN200 (2", 3", 4", 6" and 8") sizes see separate literature. Suitable for fitting between the following flanges: EN 1092 PN16, PN25 and PN40. ASME B 16.5 Class 150, 300 and 600. The ILVA flowmeter should be installed in pipework manufactured to BS 1600 or ASME B 36.10 Schedule 40.For different pipe standards/ schedules, downstream spool pieces with an equivalent internal diameter to BS 1600 or ASME B 36.10 Schedule 40 should be used. If this is not possible, please contact Spirax Sarco Limited. JIS 20. KS 20.

3.2 13

Materials Part

Material

Body

Cast stainless steel S.316 (CF8M/1.4408)

Internals

431 S29/S303/S304/S316

Spring

Inconel X750

TI-P337-46 EMM Issue 6

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ILVA Flowmeter DN250 and DN300

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