GVR
Stop the Drift: The AirTAC GVR Series as the Rock-Solid Anchor of Your Vacuum System
In high-speed automation — particularly in pick-and-place robotics or semiconductor handling — there is a silent saboteur: vacuum drift. A part slips mid-air, a glass substrate lands 0.5mm off-target, and suddenly your production yield plummets.
The culprit is rarely the pump itself, but rather the regulator. Vibration from the machine frame or accidental nudges to the adjustment knob during maintenance can shift your vacuum setpoint. The AirTAC GVR Series Vacuum Regulator is specifically engineered to eliminate these variables, providing a mechanical "anchor" for your system's pressure.
1. The Engineering Logic: "One Click" Security
The defining feature of the GVR series is its Push-to-Lock mechanism. This is not a simple friction-based lock; it is a geared engagement system. When the knob is pushed down, internal teeth lock into the valve body with a satisfying "click," ensuring the setpoint remains identical whether the machine runs for 10 hours or 10,000 hours.
Setup Workflow:
- Precision Dialing: Turn clockwise to deepen vacuum (moving toward -100 kPa); counter-clockwise to vent toward atmospheric pressure.
- Mechanical Locking: Once set (e.g., at -70 kPa), pressing the knob engages the safety gear.
- Environment Ready: Engineered for consistency in thermal ranges from -20°C to 70°C.
2. Efficiency vs. The "Vacuum Breaker"
Standard vacuum breakers often work by intentionally leaking atmospheric air into the line to lower vacuum levels. This forces the pump to run at 100% duty cycle. The AirTAC GVR uses precise throttling control instead.
⚠️ CRITICAL SAFETY NOTICE:
The GVR series is designed exclusively for negative pressure (vacuum). Applying positive pressure (compressed air) will result in immediate and permanent damage to the precision diaphragm.
By utilizing an ultra-low atmospheric intake rate of 0.6 L/min (ANR) or less, the GVR ensures that your central vacuum system isn't wasting energy. Even if the primary vacuum source fluctuates between -80 kPa and -100 kPa, the GVR isolates these spikes, maintaining a rock-steady downstream output.
3. Selection Guide: Tailoring Flow to the Task
The GVR platform is split into two distinct tiers based on volume requirements:
GVR200 Series — The Compact Specialist
Ideal for tight robot wrists or end-of-arm tooling where weight is a factor (approx 200g). Available in 1/8" and 1/4" port sizes, it handles flows up to 250 L/min.
GVR300 Series — The High-Flow Powerhouse
Designed for large-volume vacuum chambers or high-speed multi-cup arrays. While it offers a 1/4" port (GVR300-08), it utilizes a much larger internal orifice to support up to 400 L/min flow. The 3/8" model (GVR300-10) is the flagship for central manifold regulation.
4. Deciphering the Global Code
When configuring your GVR for a global machine platform, the modular code allows for easy customization:
- J Option: Excludes the mounting bracket for direct panel integration.
- N Option: Excludes the analog pressure gauge for systems using electronic vacuum sensors.
- Thread Options: Available in G (BSPP), T (NPT), or standard PT to match regional plumbing standards.
Technical FAQ
Why use a GVR instead of just adjusting the vacuum generator?
A vacuum generator's output changes based on supply air pressure fluctuations. The GVR acts as a buffer, ensuring the application sees constant pressure regardless of factory air spikes.
What is the sensitivity of the adjustment?
The GVR allows for extremely fine control, with a minimum adjustment resolution effectively covering the range from -100 down to -1.3 kPa.
Does it require a filter?
Yes. To protect the GVR's internal diaphragm and throttling seat, we recommend an upstream AirTAC GVF Series vacuum filter with 40 μm filtration or better.
The Wisdom of Stability
In an industrial world full of vibration and fluctuation, the AirTAC GVR Series offers the rarest of values: certainty. By striking the perfect balance between mechanical stability and pneumatic accuracy, it ensures that your vacuum system remains a silent, reliable partner rather than a source of downtime.