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Essential Process Engineering <br /> Temperature Range of Sealing Materials <br /> 0-ring Material Temperature Ranges'F(C) <br /> Fluorocarbon Rubber 25 to 250(-4 to 121) <br /> Buna-N Rubber I 0 to 250(-17 to 121) <br /> Neoprene Rubber -10 to 300(-23 to 145) <br /> Ethylene Propylene Rubber 30 to 250(-1 to 121) <br /> INLINE PRESSURE <br /> RELIEF VALVE <br /> • Stainless Steel t" <br /> • 150 psi(50 - 300 adjustable) <br /> • 1/4` Mate NPT inlet <br /> • 1/4` Female NPT outlet t, <br /> Figure 102—Open Source (JW-Lok PRV) <br /> Open Source Steel uses the JW-LOK type RV Series Proportional Relief Valve. <br /> Part Number: SS-RV1-N4FN4-BF <br /> The RV1 PRV used by Open Source Steel and incorporated in this closed-loop extractor includes a 0.14 inch orifice <br /> size which provides a CV Factor of 0.490. A Flow rate has been calculated on the following page showing the SCFM of <br /> the PRV. <br /> 5/3/2016 Project: 1604141_BrianKnopf_Extractor Page 21 of 34 <br /> EPE Doc. 160414ER Confidential - Proprietary Document Butane USE ONLY <br />