StainlessSteelReliefValve0 pages

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Bestobell

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Cryogenic Valves

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Stainless Steel Relief Valve

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DN10-DN15-DN20

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Description

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A range of high quality relief valves designed to comply with ISO 4126 ("Safety

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Valves General Requirement"), Ad-Merkblatt A2 ("Safety Devices Against Excess

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Pressure"), TUV and Stoomwesen requirements. They are eminently suited

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to the protection of static and road going cryogenic storage tanks against

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damaging over pressure.

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There are three basic sizes, defined by the throat diameter, and each is available

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with a variety of inlet and outlet connections.

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The valve is designed and factory set to lift repeatedly within 2% of the set

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pressure, and to reseat above, 92% of set pressure. Spring pre compression and

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blow down ring settings are sealed after test to inhibit unauthorised tampering.

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Flowrates at 10% above set pressure are measured to ensure compliance with

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stated flow capabilities.

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Maximum Working Pressure (MWP)

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(Subject to end connections and material)

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40barat -196"C to +65"C

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Features

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A lift-limiting stop helps prevent valve instability when discharging from or

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into the lengthy piping runs that can be characteristic of cryogenic systems,

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though good piping practice should still be observed when installing these

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valves.

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Each valve is individually set and flow tested and then stamped with the date

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of manufacture and its own unique serial number prior to despatch. All valves

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are degreased for oxygen duty, assembled in clean room conditions, and

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sealed in robust polythene bags prior to despatch.

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T+44(0) 114 224 0000

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F+44(0) 114 2784974

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sales@bestobellvalves.com

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www.bestobellvalves.com

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Bestobell, President Park, President Way, Sheffield, S4 7UR

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United Kingdom

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