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2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 60 Vent Tube Connector Threaded sleeve - two piece assembly where the nut is tightened inside male connector. 11A03 connects 18 female pipe thread to 18 O.D. tubing. 11A04 connects 18 female pipe thread to 14 O.D. tubing. Threaded sleeve nut - for RV20V. 11A08 516-24 threaded sleeve nut for 18 O.D. tubing. Compression fitting - where nut and sleeve are slipped over tubing and tightened into fitting body. 11A05-42 connects 14 female pipe thread to 14 O.D. tubing. 11A05-61 connects 18 female pipe thread to 18 O.D. tubing. 11A05-63 connects 38 female pipe thread to 38 O.D. tubing. 11A05-64 connects 12 female pipe thread to 38 O.D. tubing. Vent Limiting Device Optional automatic vent limiting device - ball check permits unobstructed inhala- tion for fast regulator diaphragm response on opening cycle but limits gas escape- ment to within ANSI standards should a diaphragm rupture. NOTEWhenusingtheventlimitingdeviceregulatormustbemountedinahorizontal upright position. 12A04 CSA certified for up to 12 psi 14 w.c. inlet pressure. Use on RV48 RV52 RV53 RV61 R400S R500S R600S regulators. Color - brass. 18 NPT. 12A09 CSA certified for 2 psi LP and 5 psi natural inlet pressure with 325-3 and 325-3L regulators OPD48 OPD600. Color - green. 18 NPT. 12A34 CSA certified for up to 12 psi 14 w.c. inlet pressure with RV81. Color - brass. 38 NPT. 12A39 CSA certified for 2 psi LP and 5 psi natural inlet pressure with 325-5 and 325-5L regulators OPD210D. Color - brass. 38 NPT. 12A49 CSA certified for 2 psi LP and 5 psi natural inlet pressure with 325-7A 325-7AL 325-9 and 325-9L regulators OPD210E. Color - brass. 12 NPT. Satisfies ANSI Standards for both Natural and LP gas. NOTE Vent limiters are not recommended for use in models RV91 RV111 RV131 and 210 Series. Vent Limiting Orifice 12A06 Orifice hole is on side of body under head. Fixed orifice equally limits inhalation and escapement. Use on RV48 RV52 RV53 RV61 R400S R500S R600S regulators. Color- brown. 18 NPT. Satisfies ANSI Standards for both Natural and LP gas. 12A09 11A03 11A08 11A05 12A06 12A39 12A49 ACCESSORIES