Bild Shape 3


Well combined

Our GBZ and AZI combination valves provide a particularly efficient solution: they combine tight shut-off, throttle and check valves in one single unit.
The GBZ and AZI combination valves are especially space-saving as their triple function replaces the two valves that would have otherwise been necessary the check and shut-off elements.

Its shut-off and control operations are achieved via an overrunning clutch. The advantage is that the hydraulically damped disc can move freely and closes automatically and shock-free if a pump fails. Therefore this type of valve is particularly reliable and economical.

The GBZ and the AZI are equipped with a hydraulic damping system separate from the operating medium, externally fitted and multi-adjustable.

Triple function: shut-off, throttling, checking

Compact dimensions

Lower loss of pressure (compared with using two valves)

No flow turbulences

Low-noise, controlled, shock-free closure

Damping and braking system externally individually adjustable during operation

Additional screw retention

Prepared for subsequent installation of

Can be retrofitted with electric positioning drive

GBZ: DN 100 / 4 inches up to DN 800 / 32 inches
AZI: DN 500 / 20 inches up to DN 3000 / 120 inches

Temperature range
–50 °C / –58 °F up to 200 °C / 392 °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, RCC-M

Manual, electric, adjustable hydraulically damped

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