CLA-VAL 581 Manuals

WAFER & GLOBE SILENT CHECK VALVES 580 & 581 SERIES INSTALLATION / OPERATION / MAINTENANCE Note 1: flanged gasket must bridge this joint for pressure seal Installed with name plate here 6 2 3 4 5 1 OPERATION: Cla-Val Silent Check Valves operate automatically, to open... when pump flow starts and close silently ...when pump flow stops. INSTALLATION: Silent Check Valves, Wafer and Globe style must be installed between flat faced iron or steel flanges per ANSI B16.5 or Awwa 207, utilizing a full faced gasket to bridge the joint between the seat O.D. (2) and the body (1) flange face. In this manner a pressure seal at this joint is made (see Note 1). Install the valve so that the nameplate data is plain- ly read and the flow arrow points in the flow direction. Detail 1 2 3 4 5 6 Description Body Seat* Disc* Spring* Bushing* Screw* Material Cast Iron Bronze or SS Bronze or SS (Optional Buna-N®) Stainless Steel Bronze Stainless Steel (3” & larger valves) * Recommended Spare Part Kit Note 2: All size 2” and 2 1/2” valves have threaded seats in liev of screws FLOW OPEN See Note 2 SERIES 580 WAFER STYLE CHECK VALVE 2" THRU 10" 1 2 6 3 4 5 Series 581 Globe Style Check Valve 2” thru 42” MAINTENANCE: Cla-Val Silent Check Valves are ruggedly designed for years of trouble-free service. Therefore, regular maintenance is not required. However, during initial start-up period the following problems may surface (due to mis-application) that can be easily resolved: A. No Flow thru Valve: 1. Observe that the flow arrow name plate, on the valve body, is pointing in the direction of flow. 2. Check that the down stream shut-off valve is full open. B. Valve Chatters: 1. Confirm that the flow velocity is a minimum 3’/Sec. 2. Check that there is a minimum of 3 diameters of straight pipe installed up stream of the silent check valve. C. Valve Leakage: 1. Confirm a full face gasket is installed per Note 1. A MAXIMUM ALLOWABLE INSIDE DIAMETER OF FLANGE (SEE NOTE NO. 1 ) VALVE SEAT VALVE DISC VALVE BODY ANSI B16.5 COMPANION FLANGE WITH FLAT FACE MAXIMUM ALLOWABLE INSIDE DIAMETER OF FLANGE (SEE NOTE No. 1) VALVE SIZE A VALVE SIZE A 21⁄2 2.940 14 14.140 3 3.570 16 16.160 4 4.570 18 18.180 5 5.660 20 20.200 6 6.720 24 24.250 8 8.720 30 30.250 10 10.880 36 36.250 12 12.880 42 42.250 STANDARD RING GASKET DIMENSIONS (SEE NOTE No. 2) Valve Size I.D. For 125 Lb. and 250 Lb. Gasket O.D. for 125 Lb. Gasket O.D. for 250 Lb. Gasket Valve Size I.D. For 125 Lb. and 250 Lb. Gasket O.D. for 125 Lb. Gasket O.D. for 250 Lb. Gasket 21⁄2 2.875 4.875 5.125 14 14.000 17.750 19.125 3 3.50 5.375 5.875 16 16.000 20.250 21.250 4 4,50 6.875 7.125 18 18.00 21.625 23.500 5 5.562 7.750 8.500 20 20.00 23.875 25.750 6 6.625 8.75 9.875 24 24.000 28.250 30.500 8 8.625 11.000 12.125 30 30.000 34.750 37.500 10 10.750 13.375 14.250 36 36.000 41.250 44.000 12 12.750 16.125 16.625 42 42.000 48.000 50.750 Note No. 1 - The mating companion flange I.D. must overlap the Valve seat. This is required to achieve a seal between the seat O.D. and The Body I.D. Interface area. Silent Check Valve - Flanged or Wafer Style (Flanged Style Shown) Ring or Full Faxe Gasket (1/16" Maximum Thickness)