TECHNICAL MANUAL MT103
22
4.3
INCORPORATED HB/97 SLAM-SHUT VALVE
This is a device (fig.12) which immediately blocks the gas flow if, following some kind of failure, the downstream
pressure reaches the set-point for its intervention, or is operated manually.
On the Reflux 819/FO regulator, it is possible to have the HB/97 slam-shut incorporated both with the service
regulator or on the one functioning as in-line monitor.
The main characteristics of the slam-shut device are:
• balance valvue obturator;
• indirect, self-fed, pneumatic actuation;
• local close button;
• interventation with pressure increase and/or decrease;
• design pressure: 100 bar for all the components;
• precision (AG): ±1% of the pressure set-point for pressure increases; ± 5% for pressure drops;
• incorporated by-pass;
• manual reset only;
Fig. 12
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Содержание REFLUX 819/FO
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Страница 46: ...TECHNICAL MANUAL MT103 46 PRE REGULATOR R14 A FO Fig 28 sales mvandc com Phone 877 566 3837 Fax 925 407 2903 ...
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Страница 81: ...TECHNICAL MANUAL MT103 81 HB 97 SLAM SHUT DEVICE DN 4 sales mvandc com Phone 877 566 3837 Fax 925 407 2903 ...