221-4000 - Miller Smith Silverline 220 Series High Purity Two-Stage Regulator 0-50 PSI

Reliable High-Purity Gas Regulation

When your work demands the absolute cleanest gas delivery with zero fluctuation, the Miller Smith 221-40-00 Silverline Regulator is the professional's choice. While standard industrial regulators are built for durability, the Silverline series combines rugged construction with laboratory-grade precision. This two-stage regulator is specifically built for high-purity applications where maintaining a specific pressure is critical, regardless of how much gas is left in your tank.

Why Choose a Two-Stage Regulator?

If you have ever experienced your delivery pressure creeping up as your tank gets low, you know the frustration of single-stage regulators in sensitive applications. The Miller Smith 221-40-00 solves this problem completely. By stepping down the pressure in two distinct stages, it delivers a rock-steady 0-50 PSIG output from a full 3500 PSI cylinder down to the last few pounds. This "set it and forget it" performance is essential for calibration gases, laser mixtures, and precision welding applications requiring consistent shielding gas flow.

Built for the Long Haul

Miller Smith (formerly Smith Equipment) is legendary for build quality, and the Silverline series is no exception. The regulator is constructed from rugged brass bar stock and finished with a high-quality plating that resists corrosion and wear. The large 2-1/2 inch gauges are easy to read at a glance, allowing you to monitor both tank level and delivery pressure effortlessly. Furthermore, the unit is designed to withstand vacuums generated during purging operations, making it robust enough for complex gas management procedures.

Key Specifications

• Delivery Pressure: 0-50 PSIG
• Inlet Connection: 1/4" FNPT (Female NPT)
• Outlet Connection: 1/4" FNPT (Female NPT)
• Diaphragm: Stainless Steel for maximum purity
• Safety: Built-in capturable relief valve

Whether you are setting up a lab, a testing bench, or a specialized manufacturing process, the Miller Smith 221-40-00 provides the control and purity you need to get the job done right.