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June 20, 2008 i • Dry Trim 118s <br />W*j� �. MODEL R <br />ACCELERATOR TRIM <br />N4IKJ <br />The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 <br />Telephone: 269-945-9501 Technical Services 877-384-5464 Fax: 269.945-4495 Email: techsvcs@vikingcorp.coni <br />AIR GAUGE <br />SIDE OUTLET VALVE <br />�' 114• PLUG <br />12- W 114 x 1-trz-(38) <br />ELBOW 112 x3' o <br />[� (72) <br />~ 12x2-(51) <br />12 x 4-(102) ® <br />112'ELBOW <br />R <br />12• UNION + } <br />i2 x5-1/2'(140) 12-UNION <br />I 4 12' ISOLATION VALVES 7 <br />I NORMALLY OPEN } 112 x 712- (38) <br />(SEE NOTE 2) <br />3'84--112 x9-1/2'(241) <br />6'-112 x 10'(254) <br />Ar <br />Form No. F_101795 <br />0 <br />E i0 WARNING TAG <br />n <br />12 x 4.12.(114) <br />m� <br />} <br />m `o <br />me <br />�4 <br />€ <br />@V' ffi-ELBOW <br />112x 1.1/2'(38) <br />a? r' <br />W <br />Model D-2 Accelerator Trim <br />Valve Size <br />Trim Part Number <br />3", 4' 8 6" <br />09730 <br />Standard Trim Sets include galvanized nipples <br />and fittings. <br />General Notes: <br />• Accelerator must be !rimmed as shown. Any <br />deviation from trim size or arrangement may affect <br />operation of the Accelerator. <br />• Dimensions in parenthesis are millimeter and may be <br />approximations. <br />• Viking uses ASME fitting designations. Tee's shall be <br />called out in the following order: 1 - largest outlet on <br />run; 2 - Srnaller outlet on run; 3 - Branch size. <br />Note 1: The Model D-2 Accelerator is not included <br />with trim packages and must be ordered separately <br />(P/N 09881) Accelerators must be trimmed as <br />shown. For instructions pertaining to PLACING THE <br />SYSTEM IN SERVICE, refer to Technical Data for the <br />Model D-2 Accelerator. <br />Note 2: Accelerator Isolation Valves are NORMALLY <br />OPEN. Do not close either Isolation Valve, except <br />during system hydrostatic test and when servicing the <br />Accelerator. <br />Accelerator Operation: <br />(Refer to Accelerator Technical Data) <br />1st: System air pressure is reduced. <br />2nd: Accelerator operates, exhausting air pressure from <br />inlet piping and routing the system air into the inter- <br />mediate chamber of the Dry Valve. <br />CAUTION: When resetting air to accelerator, all air in <br />top chamber of accelerator must be bled to zero so <br />it will seat when adding air. The air can be bled by <br />loosening the air gauge on top of the accelerator. <br />Revised page replaces page 116a dated February 9, 2007 <br />(Revised nipple lengths) <br />/61 <br />