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Page 1 of 3 <br />RETARD CHAMBER 41KJNG4 <br />MODEL C-1 <br />c 1 <br />The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 <br />Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com <br />1. DESCRIPTION <br />The Viking Model C-1 Retard Chamber is a surge tank used with Viking Alarm Check Valves to re- <br />duce the possibility of false alarms due to changes in the water supply pressure. <br />Features <br />1. Ductile iron body <br />2. Self draining <br />3. Required Accessories: <br />a. P/N 01611A - 1/8 inch (3.2 mm) Drain Restriction (included in Viking Alarm Check Valve <br />Trim Sets designed for use with "variable pressure" water supplies). <br />4. Optional Accessories: <br />a. P/N 01973A - Circuit closer vent assembly (Required when an electric Alarm Pressure <br />Switch is installed without a Water Motor Alarm.) <br />b. Alarm Devices: A Water Motor Alarm and/or electric Alarm Pressure Switch, with approved <br />connected alarms, are required for a complete system. <br />2. LISTINGS AND APPROVALS WARNING: Cancer and Reproductive Harm- <br />vavaw. P65Warn ings.ce.gov <br />�@ c os cULus Listed: VPLX and VPLX7 - 300 psi (20.7 bar) MWP <br /><FM> FM Approved: Waterflow Alarm Valves - 300 psi (20.7 bar) MWP <br />New York City Board of Standards and Appeals: Calendar Number 219-76-SA - 250 psi (17.2 bar) MWP <br />vds VdS Approved: Wet Alarm Valve Stations - 250 psi (17.2 bar) MWP <br />rLxfi.: LPC Approved -250 psi (17.2 bar) MWP <br />3. TECHNICAL DATA <br />Specifications: <br />Pressure Rating - 300 psi (20.7 bar) water working pressure. <br />Factory tested hydrostatically to 600 psi (41.4 bar). <br />Connections: '/2' (15 mm) NPT inlet and 3/4" (20 mm) NPT outlet. <br />Capacity: 1 Gallon (4 Liters) Approx. <br />Material Standards: <br />Body: Ductile Iron 65-45-12. <br />Bushings: Cast Iron UNS-F12102 <br />Coating: Viking black E-coat Spec SPF02 W01 <br />Ordering Information: <br />Part Number- 05904B <br />Shipping Weight - 22 lbs. (10 kg.) <br />Available Since - 1986 <br />Viking Technical Data may be found on <br />The Viking Corporation's Web site at <br />http://www.vikinggroupinc.com. <br />The Web site may include a more recent <br />edition of this Technical Data Page. <br />4. INSTALLATION <br />1. The Retard Chamber and associated trim must be installed as shown on the Viking Alarm Check Valve Trim Sheets. The trim size <br />and arrangement shown on Viking Trim Charts is required for proper operation. <br />2. Circuit Closer Vent Trim must be galvanized steel unless other materials are specified in the Technical Data for the system <br />used. <br />3. The 1/8 inch Drain Restriction must be installed in the Retard Chamber drain piping. The alarm supply trim piping must be re- <br />stricted as shown on Viking Alarm Check Valve Trim Charts. Model J-1 Alarm Check Valve trim requires a 7/32" Restricted Orifice <br />(Part No. 06980A). <br />4. The Retard Chamber must drain automatically to a non -pressurized drain. <br />5. For the Retard Chamber to properly drain, it must be vented. This is normally accomplished through the Water Motor Alarm con- <br />nection. However, when the line to the Water Motor is trapped or an electric Alarm Pressure Switch is used without the Water <br />Motor Alarm, Circuit Closer Vent Trim must be installed and kept clean to allow the Retard Chamber to drain. <br />6. Verify that all system components are rated for the water working pressure of the system. <br />5. OPERATION <br />When the clapper of the Alarm Check Valve opens, water flows through the restricted alarm supply piping into the inlet of the Retard <br />Chamber. The Retard Chamber begins to fill while simultaneously draining through the 1/8 inch (3.2 mm) Drain Restriction. <br />Form No. F_092188 18.10.18 P65 Replaces Form No. F_092188 Rev November 4, 2011 <br />(Added P65 Warning.) <br />