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Features:
Also known as a priority valve, the model 635 is a fully balanced economical regulator. It is similar to the model 211 regulator but is capable of much higher flows. It is used primarily on compressors to maintain back pressure on filters and separators thus improving their efficiency by as much as 1000 %. The stainless steel metal-to-metal seat is designed to be self-cleaning and prevent freeze-up. It maintains constant back pressure (set pressure) independent of outlet pressure. When outlet pressure (such as in a tank being filled) reaches the set pressure the regulator opens fully permitting unrestricted flow. Normally the valve is set for back pressures of 1500 to 6000 PSI. However, it can be operated with set pressures as low as 150 PSI. Lighter than standard springs can be ordered to improve low-pressure operation.
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