Airgas Model N245B350 Brass High Purity Single Stage Pressure Regulator With 1/4” FNPT Connection And Non-Lubricated Check ValveThese brass, single stage, high purity regulators are recommended for non corrosive analytical and process applications where precise flow control is not critical. A specially designed, convoluted, stainless steel diaphragm with metal to metal seals provides good regulating performance and maximum purity integrity without the need for a soft seal, which often can be a source of contamination. These regulators come with a CGA nipple that has a special

calibration kits

The metal-to-metal diaphragm seal prevents contamination by eliminating the need for a soft seal and provides a leak-rate design of less than 2 x 10–8 ccs helium

it becomes a servo-regulator

Self-closing lid is operated with the included foot lever

Also for chromatography processes where the gas cannot be compromised by any interaction

Nickel-Plated Bar Stock Body - provides long-lasting good looks

The valve is built into the regulator body reducing the gas path

6-gallon capacity

These compact

2 1/2" Nickel-Plated Brass Gauges - for accurate

These regulators can handle flows up to 250 liters per minute of nitrogen with only a 5 psig pressure drop

unique in a compact unit