Bild Shape 1

MAG

Safety when flows reverse

The hallmark of the MAG is an external balancing weight that optimally counterbalances the valve disc. The advantage is that the valve is very responsive and the disc reliably reaches its final closing position. Due to the positioning of the balancing weight in its own pressure-resistant body without gland shaft seals, the valve exhibits low internal friction, which benefits the optimal closing and opening characteristics.

Excellent tight shut-off behaviour

Minimal pressure losses

Additional screw retention

Robust design

Minimal maintenance cost

NPS
DN 150 / 6 inches up to DN 2000 / 80 inches

Temperature range
–50 °C / –58 °F up to 500 °C / 932 °F

Pressure Class
PN 6/10/16/25/40
ANSI 150/300

Construction lengths in accordance with
ISO 5752 BS 14 (F4)
Custom-made construction lengths on request

Valves designed in accordance with international standards, e. g.
AD technical instructions, ANSI, API, ASME, ATEX,
BS, DGRL, DIN EN / ISO, GOST, KTA, MSS, NACE,
RCC-M

Operation
Self-closing, pneumatic, hydraulic, electric

As automatically closing check valves, MAG and GMZ are used in exhaust steam pipes in steam turbines as well as in pressure lines of compressors in air and gas systems.

The valves can be fitted with either a hydraulic or pneumatic auxiliary drive with spring loading as additional closing support. An overrunning clutch (MAG) enables the free movement, which is not influenced by drive and gland shaft friction.

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