GMZ Valves

รหัสสินค้า : 453205-1-1


As automatically closing check valves, MAG is 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.

Positive closing behaviour via spring-loaded pneumatic operation

Adjustable hydraulic damping facility

Avoidance of tendencies of the valve disc to vibrate during operation

Adjustability of slight pressure losses via the closure weight

Additional screw retention

High availability and long service life



Our GMZ check valves protect important continuous flow machines from the dangers of back flows. An extremely low degree of internal friction and a finely responsive adjustable counterweight enable the valve to react sensitively. The GMZ is additionally equipped with a pneumatic, spring-controlled drive, enabling controlled and rapid closing behaviour. It is also fitted with a hydraulic damping system to avoid any tendencies the valve disc has to vibrate during flow changes.

Technical Data

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

Temperature range–50 °C / –58 °F up to 250 °C / 482 °F

Pressure Class-PN 2.5/6/10/16/25/40-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