Model 330 heavy-duty regulator allows for gas withdrawal from argon and nitrogen liquid cylinders. Its unique design permits inlet pressures up to 3000 PSIG for use on high pressure cylinders. The Model 301 features a brass body, brass T screw bar adjustment, stainless steel diaphragm, 2.5" brass dual scale gauge, one-piece encapsulated seat design with internal filter and PTFE Teflon® seat and Harris' exclusive self-reseating, tamper-proof internal high pressure safety valve. Model 330 has an auxilliary plugged low pressure port. This model is also UL® listed.
