The 4448 Series regulators are specifically designed for heat and vaporized media before and after pressure reduction, and are classified to meet Class 1, Groups B, C and D code requirements. The 4008 Series regulators are intended for primary pressure control of mildly corrosive high purity gases such as ammonia, hydrogen sulfide, and sulfur dioxide, or for applications requiring the compatibility of an aluminum body regulator. The brass 4097 and 316 stainless steel 4098 Series regulators are primarily installed on cryogenic vaporizing systems. ![]() The brass 4094 and stainless steel 4095 Series regulators are intended for primary pressure control of non-corrosive gases at a maximum inlet pressure of 6000 psig, while the 4096 Series regulators are used at a maximum of 3000 psig.
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