Nitrogen Regulator – High-Precision Dual Gauge for HVAC Systems

This professional nitrogen regulator is built for HVAC and refrigeration technicians who need accurate, repeatable pressure control during leak testing, line purging and brazing. With a heavy-duty brass body, dual gauges and an adjustable output from 0 to 800 PSI, it gives you the precision and reliability needed for safe nitrogen work on every job.

Key Features

• Adjustable outlet pressure: 0–800 PSI — dial in exactly the pressure required for the task.
• Max inlet pressure: 4000 PSI — compatible with standard high-pressure nitrogen cylinders.
• Dual gauge monitoring — one gauge for cylinder pressure, one for delivery pressure, so you always know what’s going in and what’s coming out.
• Heavy-duty brass body — corrosion-resistant and built to handle daily site use.
• Easy-turn pressure knob — smooth, precise adjustment without over-pressurising the system.
• Compact and portable — fits easily in a service kit or tool bag.

Technical Specifications

• Type: Type 50 nitrogen regulator
• Max inlet pressure: 4000 PSI
• Adjustable outlet: 0–800 PSI
• Body material: Brass
• Gauges: Dual (inlet + outlet)
• Applications: Leak testing, line purging, brazing

Why Use a Dedicated Nitrogen Regulator?

Nitrogen is used in HVAC and refrigeration work for pressure testing new installations, purging lines before brazing to prevent oxidation, and leak testing repaired systems before recharging. Using a dedicated nitrogen regulator — rather than an unregulated cylinder valve — gives you controlled, safe pressure delivery and protects system components from over-pressurisation.

A dual-gauge regulator also lets you monitor cylinder depletion in real time, so you’re not caught short mid-job.

Typical Applications

• Pressure testing new refrigerant line sets before commissioning.
• Purging copper lines with nitrogen during brazing to prevent internal oxidation.
• Leak testing repaired systems prior to evacuation and recharge.
• Holding pressure during decay tests to confirm system integrity.

Compliance Note

Nitrogen work on refrigeration and air conditioning systems should be carried out by competent persons following relevant Australian Standards and safe work procedures. For refrigerant-related work, ensure compliance with ARCtick licensing requirements.

Related Tools

• Vacuum Pumps — for system evacuation after pressure testing and before recharge.
• Refrigerant Leak Detectors — confirm system integrity after nitrogen pressure testing.
• Manifold Gauge Sets — for pressure and superheat/subcooling checks during commissioning.
• Test & Measurement Tools — multimeters, thermometers and diagnostic instruments.