Supporting One of New Zealand’s Premier Winemakers

EHL is proud to partner with Delegat Limited, one of New Zealand’s most iconic and respected wine producers, in supplying and installing a premium on‑site nitrogen generation system at their Hawke’s Bay winery.

Across two generations and more than six decades, Delegat has played a central role in shaping New Zealand’s wine industry. Founded in 1947, the company has been instrumental in establishing Hawke’s Bay and Marlborough as two of the country’s most celebrated wine regions. Their commitment to excellence, innovation, and sustainability made them the perfect partner for another high‑performance EHL gas generation project.

The Project: High-Purity Nitrogen Generation for Wine Production

Delegat engaged EHL to design, supply, and install a site‑based, high‑purity nitrogen generation system to provide reliable and consistent nitrogen supply for the winery’s gas mixer—used in inline sparging during winemaking.

The new system complements a similar EHL nitrogen generation setup at another Delegat site, ensuring consistency and redundancy across their operations.

System Overview:

1. Parker OFP030 Air Filtration System – Delivers feed air at ISO 8573‑1:2010 Class 1.2.1 quality, ensuring clean air input to the nitrogen generators enhancing performance and derisking contamination.
2. 2 × Parker N255P NITROsource Plus Nitrogen Generation Systems – Industry‑leading PSA (Pressure Swing Adsorption) systems providing high‑purity nitrogen on demand.
3. 2 × 500 L Nitrogen Buffer Tanks – Maintain steady pressure and flow for smooth downstream operation.
4. Dual 3000 L UHP Nitrogen Storage Tanks – Each train feeds the CO₂/N₂ gas mixer, providing stable gas blending for winemaking processes.

This integrated, automated setup gives Delegat precise control over gas quality and supply—critical for maintaining the integrity, flavour, and consistency of their premium wines.

Why Delegat Chose Localised Nitrogen Generation

Like many leading manufacturers and food producers, Delegat recognised the value of on‑site nitrogen generation over traditional bulk or cylinder supply. The benefits are compelling across cost, safety, reliability, and environmental performance.

✅ 1. Significant Cost Savings

Producing nitrogen on‑site is far more economical than relying on delivered gas.

• No delivery or rental fees
• No supplier contracts
• Pay only for electricity to operate the generator
• Generate exactly what’s needed—no waste

Many organisations report 30–70% cost reductions after switching to local generation.

✅ 2. Continuous, Reliable Supply

EHL’s systems deliver a constant, uninterrupted nitrogen flow, removing supply chain and delivery dependencies.

• Eliminates the risk of running out of cylinders
• No waiting for refills or truck deliveries
• Consistent pressure and quality

This reliability is vital for production sites where any downtime can be costly.

✅ 3. Enhanced Workplace Safety

Traditional gas storage involves several hazards:

• High‑pressure cylinders can pose explosion or handling risks
• Cryogenic tanks require cautious handling due to extreme cold
• Frequent cylinder changes and forklift transport add risk

On‑site generation uses lower pressures and eliminates delivery handling, creating a safer working environment.

✅ 4. Precision Purity Control

With Parker’s NITROsource Plus units, Delegat can fine‑tune nitrogen purity to exact winery specifications—achieving ultra‑high purity where needed without overpaying for unnecessary performance.

✅ 5. Environmental Benefits

Choosing on‑site generation supports Delegat’s sustainability goals:

• No nitrogen delivery trucks → reduced carbon emissions
• No wasted gas
• Lower overall energy footprint

This aligns perfectly with Delegat’s long‑held commitment to environmentally responsible winemaking.

✅ 6. Increased Operational Efficiency

On‑site systems streamline workflow:

• No need for cylinder storage or inventory management
• Automated production and monitoring
• No downtime for tank or cylinder changeovers

The result: simplified operations and maximum uptime.

Conclusion: Innovation in Partnership

EHL’s collaboration with Delegat showcases how engineering innovation and sustainable design can enhance a world‑class winemaking process. By installing an advanced, on‑site nitrogen generation system, Delegat strengthens its production reliability, quality consistency, and environmental performance—while achieving long‑term cost efficiencies.

At EHL, we’re proud to continue supporting New Zealand’s leading producers with tailored, energy‑efficient gas generation solutions built for a sustainable future.

Interested in upgrading your gas supply?
Get in touch with the EHL team to learn how on‑site nitrogen generation can transform your operations:
📧 solutions@ehlsolutions.com
🌐 http://www.ehlsolutions.com