Let’s Dive into VWR High-Purity Two-Stage Gas Regulators, Brass 3300755
The VWR High-Purity Two-Stage Gas Regulators, Brass 3300755 promises consistent and reliable gas delivery for critical laboratory applications. This regulator, manufactured by VWR, is designed for high-purity systems where maintaining stable outlet pressure and preventing contamination are paramount. It claims to be a robust and dependable tool.
My lab’s existing regulator setup was showing its age; pressure fluctuations were becoming too frequent, impacting the precision of our gas chromatography. I needed a regulator that could provide rock-solid pressure control, even as the gas cylinder emptied, and prevent any backflow contamination.
Unboxing the VWR High-Purity Two-Stage Gas Regulator revealed a solid piece of brass hardware, reassuringly heavy. The gauges felt substantial, and the various fittings were clean and well-machined; this regulator looked and felt like a quality piece of equipment.
I considered similar regulators from Matheson and Air Liquide, but the VWR model offered the best combination of specifications and price for our specific application, which involves carbon dioxide delivery. It seemed to strike a balance between cost-effectiveness and the critical performance metrics we needed.
My first impression was cautiously optimistic; the build quality suggested reliability, but the proof would be in its performance under the demanding conditions of our research lab. I was keen to see if it could deliver on its promise of stable, high-purity gas delivery.
Real-World Testing: Putting VWR High-Purity Two-Stage Gas Regulators, Brass 3300755 to the Test
First Use Experience
I integrated the VWR High-Purity Two-Stage Gas Regulator into our gas chromatography system, which runs almost continuously for sample analysis. Initial setup was straightforward, thanks to the clear labeling and standard CGA 320 inlet connection. The regulator connected easily to our carbon dioxide cylinder.
The lab environment is typically climate-controlled, but experiences occasional temperature fluctuations due to equipment operation, so stability under varying conditions is key. The regulator delivered a remarkably stable pressure output within the set range, even with moderate temperature changes within the lab.
Using the regulator was intuitive; the adjustment knob provided precise control over the delivery pressure, and the dual gauges made monitoring the cylinder and outlet pressures easy. I needed no special training or adaptations to start using the regulator effectively.
The only initial surprise was the higher-than-expected flow rate required to achieve our target pressure, but this was easily adjusted after a few minutes. I was relieved to observe stable pressure readouts immediately after start-up.
Extended Use & Reliability
After three months of near-constant use, the VWR High-Purity Two-Stage Gas Regulator continues to perform reliably. The pressure stability remains excellent, and there’s been no noticeable drift in the setpoint, which is critical for consistent chromatography results.
There are no visible signs of wear and tear on the regulator body or gauges, even with frequent adjustments and handling. The brass construction appears resistant to corrosion, and the stainless steel diaphragm shows no sign of degradation.
Maintenance has been minimal; I’ve only needed to occasionally wipe down the exterior to remove dust. It has been refreshing compared to the previous regulator, which required regular disassembly and cleaning.
Compared to the old regulator, the VWR model offers significantly improved pressure stability and requires much less maintenance. It has demonstrably outperformed our previous setup.
Breaking Down the Features of VWR High-Purity Two-Stage Gas Regulators, Brass 3300755
Specifications
Gas: Carbon Dioxide. This regulator is specifically designed for use with carbon dioxide, indicated by the CGA fitting.
Inlet CGA: 320. The CGA 320 fitting ensures a secure and leak-free connection to carbon dioxide cylinders.
Flow Capacity, Standard CFH: 970. This high flow capacity provides ample gas supply for even demanding applications.
Delivery Pressure, psig: 1–125. The adjustable delivery pressure range offers flexibility for various experimental requirements.
Maximum Inlet Pressure: 3000 psig. This high inlet pressure rating is suitable for standard high-pressure gas cylinders.
Diaphragm: Type 316L Stainless Steel, 4.3 cm (111/16“). The stainless steel diaphragm minimizes contamination and ensures long-term reliability.
Dual Scale Gauges: 5 cm (2″) psi/bar. The dual-scale gauges allow for easy monitoring of both cylinder and outlet pressures in commonly used units.
Outlet: Diaphragm Valve with 0.6 cm (1/4“) Tube Fitting. The diaphragm valve provides precise flow control and a secure connection to downstream tubing.
Body Ports: 0.6 cm (1/4“) NPT. The NPT ports offer versatility for connecting additional components.
These specifications are important because they dictate the regulator’s suitability for high-purity applications requiring consistent pressure control and minimal contamination risk. The high flow capacity, adjustable delivery pressure, and stainless steel diaphragm directly impact its performance and reliability in demanding lab environments.
Performance & Functionality
The VWR High-Purity Two-Stage Gas Regulator excels at maintaining a consistent outlet pressure, regardless of changes in cylinder pressure. This is vital for experiments and processes that are sensitive to pressure fluctuations.
Its strengths include stable pressure delivery, high flow capacity, and minimal maintenance requirements. The only minor weakness is the initial flow rate adjustment, but this is quickly resolved.
The regulator meets and exceeds expectations for its intended purpose. The pressure stability, in particular, is impressive.
Design & Ergonomics
The VWR High-Purity Two-Stage Gas Regulator features a solid brass body and stainless steel diaphragm. The materials used exude quality.
The regulator is relatively heavy, which contributes to its perceived robustness. It is easy to use and the adjustment knob offers precise control.
Durability & Maintenance
The VWR High-Purity Two-Stage Gas Regulator is built to last, thanks to its durable brass construction and stainless steel diaphragm. With proper use, it should provide years of reliable service.
Maintenance is minimal, primarily consisting of occasional cleaning. The stainless steel diaphragm resists corrosion, further reducing maintenance needs.
Accessories and Customization Options
The VWR High-Purity Two-Stage Gas Regulator comes with standard fittings for connecting to gas cylinders and downstream tubing. While there are no specific customization options offered by VWR for this model, its standard NPT ports allow for the connection of various aftermarket accessories, such as pressure relief valves or additional gauges.
The regulator is compatible with standard tubing and fittings commonly used in laboratory gas systems. The availability of third-party accessories adds to its versatility.
Pros and Cons of VWR High-Purity Two-Stage Gas Regulators, Brass 3300755
Pros
- Excellent pressure stability, even as cylinder pressure decreases.
- High flow capacity for demanding applications.
- Durable brass construction with a stainless steel diaphragm for long-term reliability.
- Easy to use and maintain, requiring minimal intervention.
- Standard CGA 320 inlet fitting for easy connection to carbon dioxide cylinders.
Cons
- Initial flow rate adjustment may be required to achieve desired pressure.
- Relatively heavy due to the solid brass construction.
Who Should Buy VWR High-Purity Two-Stage Gas Regulators, Brass 3300755?
The VWR High-Purity Two-Stage Gas Regulators, Brass 3300755 is perfect for research laboratories, analytical facilities, and industrial processes that require precise and stable delivery of carbon dioxide. It is ideal for applications such as gas chromatography, EPA protocol mixes, and laser gas systems.
This regulator may not be the best choice for applications that do not require high purity or precise pressure control, where a simpler and less expensive regulator may suffice. Someone only needing a regulator for basic shop air or non-critical applications might find it overkill.
A must-have accessory would be a high-quality leak detector to ensure all connections are airtight for optimal performance and safety. Also, depending on the specific application, a pressure relief valve might be a wise addition for added safety.
Conclusion on VWR High-Purity Two-Stage Gas Regulators, Brass 3300755
The VWR High-Purity Two-Stage Gas Regulators, Brass 3300755 is a reliable and well-built regulator that delivers on its promises of stable and high-purity gas delivery. Its robust construction and minimal maintenance requirements make it a valuable asset for any laboratory or industrial setting requiring precise control of carbon dioxide flow.
At $869.99, the price is justified by the regulator’s performance, durability, and ability to maintain consistent pressure, which is critical for sensitive applications. It’s an investment in reliability and precision.
I would highly recommend the VWR High-Purity Two-Stage Gas Regulators, Brass 3300755 to anyone seeking a reliable and high-performing carbon dioxide regulator for demanding applications. If you value stable pressure, purity, and minimal maintenance, this is the regulator for you.