The first soft-sealing butterfly valve with 3 optimised disc designs means less turbulent flow.
DN 20 TO DN 50 – SINGLE SHAFT DESIGN
- Lower friction and pressure losses for optimised Kvs values.
- Optimised disc design means less turbulence and a shorter outlet section – just 2 x DN – downstream of the valve.
- Less turbulence also has the advantage of less noise and vibration in the system.
- Less dirt deposits.
DN 65 TO DN 200 – INNOVATIVE CURVED DESIGN
- Lower friction and pressure losses for optimised Kvs values.
- Optimised disc design means less turbulence and a shorter outlet section – just 2 x DN – downstream of the valve.
- Less turbulence also has the advantage of less noise and vibration in the system.
- Less dirt deposits.
- The curved design is protected by a utility model and as such is unique worldwide.
- The curved design results in increased stiffness and adds stability to the entire shaft-and-disc structure.
DN 250 TO DN 600 – INNOVATIVE HEXO HONEYCOMB DISC DESIGN
- The HEXO honeycomb disc design is protected by a utility model and as such is unique worldwide.
- Lower friction and pressure losses for optimised Kvs values.
- Optimised disc contour means less turbulence and a shorter outlet section – just 2 x DN – downstream of the valve.
- Less turbulence also has the advantage of less noise and vibration in the system.
- Less dirt deposits.
- Weight advantage of the new disc design simplifies handling in the system.
- The HEXO design results in increased stiffness and adds stability to the entire shaft-and-disc structure.
For significant optimisation and a flow with less turbulence and vibration.
Single Shaft Design
DN 20-50
Curved Design
DN 65-200
HEXO Honeycomb Design
DN 250-600
Standard soft-seated butterfly valve
ZESA®/GESA® NEXTG3N with HEXO Honeycomb disc design
Polygonal Shaft-Disc Connection
INNOVATIVE & FORM-FITTING
The connection between the shaft and the disc is designed as a form-fitting polygon for optimum torque transmission. The disc and liner are simple to replace because the polygon is self-centring and no additional fixing pin is required. A flat surface ensures the discharging of air when the shaft is inserted into the disc, for even easier installation.
BENEFITS FOR YOU
- New polygonal connection guarantees maximum reliability.
- Designed as a form-fitting polygon for optimum torque transmission.
- Design rules out any notching effect.
- Easy servicing because the liner and disc are simple to replace.
The strong Trio for Industry
Optimised for more challenging applications:
ZESA®/GESA® butterfly valves industrial version
with cast lever and metallic notched plate
ARI butterfly valves ZESA®/GESA® in industrial version combine
the advantages of the safe and robust ZIVA® industrial valve with
the innovative product features of the optimised product range.
YOUR ADVANTAGES
- Energy efficiency: Significantly better KVS values than those of the former ZESA/GESA/ZIVA versions
- Maximum process reliability: Shaft and disc are connected by a secure polygon
- Optimised stability: Long service life thanks to optimised stability of the entire shaft and disc design
- Better, corrosion-resistant coating: C3 instead of C2 coating based on DIN EN ISO 12944-5
- Shaft end equipped with a square: The standardised connection form in accordance with ISO 5211 offers uncomplicated, subsequent installation of a control element
- Better handling when replacing liner: Weight reduction for the large nominal sizes
- Robust and durable for more demanding applications: Industrial version optionally with cast lever and metallic notched plate
- Cold temperature version: Optional for temperatures down to -20°C
ZESA®/GESA® NEXTG3N Applications
Areas of application in HVAC (Standard version)
- Air conditioning and cold water applications, e.g. in data centers
- Heating systems
- Drinking water systems
- Heat and cooling transfer stations
Areas of application in industry (Industrial version)
- Compressed air systems
- Cooling loops in the process industry
- Swimming pool technology
- Solar thermal systems
- Biogas plants
- Seawater applications
- Various industrial applications
Your Benefits with ZESA®/GESA® NEXTG3N
OPTIMISED FLOW
Due to the optimised disc design, leading to a shorter outlet section.
OPTIMISED SAFETY
Due to the polygon connection, stiffer disc and blow-out protection.
OPTIMISED EFFICIENCY
Due to the optimised Kvs values and ease of servicing, enabling more compact systems. Can be fully insulated.