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HER <br />-GY& eWb 10 0 <br />CHECKVALVES <br />FIG 246 A <br />= <br />SWING CHECK VALVE <br />Used for single -direction flow in a hori- <br />zontal pipeline and/or to isolate prpduct <br />in a multi -product handling system. <br />Poppet and seats are metal and may <br />allow some seepage over long periods <br />of time. Expansion relief is available. <br />FIG 246 DRF <br />FIG 246 D <br />SINGLE POPPET <br />VERTICAL CHECK VALVE <br />For standard check valve applications <br />such as "holding prime" on a pump. <br />Metal poppet/seat. Valve mounted in <br />vertical position with product flow up- <br />wards. <br />CONSTRUCTION DETAILS <br />Cast iron body - epoxy coated, brass <br />poppet, seat, and tailpiece. <br />SIZE WEIGHT <br />1 1/2".........................................................................................3 1/2 lbs <br />FIG 137 / 137 B <br />Available with Expansion Relief. <br />NOTE: pressure settings are <br />approximate. <br />ANGLE CHECK & <br />BACK PRESSURE VALVE <br />SINGLE POPPET/ SPRING LOADED <br />FIG 137 - Fitted with a light spring & soft <br />seat and made for standard check valve <br />applications. All brass. Buna-N disc <br />(standard). Teflon and Viton available. <br />FIG 137 B - Fitted with heavy spring & <br />metal seat. Used for "back -pressure" <br />applications. All brass construction. <br />NOTE: Special pressure settings are <br />available in the 137 & 137 B series for <br />an extra charge. <br />SIZE WEIGHT OPENING PRESSURE <br />(Fig 137 B) <br />1 1/2" ..................................... 4.25 lbs ......................... .................. 6 PSI <br />2" ........................................... 6.25 lbs .......................................... 8 PSI <br />3 ..............................................13.5 lbs.................................:........ 8 PSI <br />OPTIONS & DESCRIPTION <br />Expansion Relief available (except 246 AL): specify 25 or 50 PSI when ordering. <br />)FIG 246 A - Brass body, cap, & internals. Threaded connections. Cold non - <br />shock pressure limit = 200 PSI WOG <br />FIG 246 ADI - Same as 246 A, but constructed of Ductile Iron. <br />FIG 246 DRF - Same as 246 ADI, but with 150# raised -face flanged connec- <br />tions. <br />FIG 246 AL - Aluminum body, cap, and internals. Threaded connections. Cold <br />non -shock pressure limit =125 PSI WOG. <br />FIG 246 D - Aluminum body, cap, and internals. Viton 0 -ring Square (TTMA) <br />flange connections. Cold non -shock pressure limit =100 PSI WOG. <br />SIZE <br />246 A <br />246 ADI <br />246AL <br />246 DRF <br />246 D <br />approximate. <br />WEIGHT <br />WEIGHT <br />WEIGHT <br />WEIGHT <br />WEIGHT <br />11/2" <br />3.5 lbs <br />NA <br />NA <br />NA <br />NA <br />2" <br />5lbs <br />5.5 lbs <br />3lbs <br />NA <br />NA <br />21/2" <br />8.25 lbs <br />NA <br />NA <br />NA <br />NA <br />3" <br />12 lbs <br />12.5 lbs <br />NA <br />24 lbs <br />7lbs <br />4" <br />NA <br />NA <br />NA <br />84 lbs <br />NA <br />FIG 335 B <br />DOUBLE POPPET <br />VERTICAL CHECK VALVE <br />For standard check valve applications <br />such as "holding prime" on a pump <br />Metal poppets/seats. All brass con- <br />struction <br />on struction and made to be mounted in the <br />vertical position with product flow up- <br />wards. <br />Fig 335 BP - same as FIG 335 B, but <br />equipped with a Test Plug. <br />SIZE WEIGHT <br />1 1/2"._ ...................................................................................... 3.75 lbs <br />2"..................................................................................................6.5 lbs <br />158 SERIES <br />VERTICAL CHECK & <br />BACK PRESSURE VALVE <br />SINGLE POPPET /SPRING LOADED <br />FIG 158A - Fitted with light spring & soft <br />seat and used for standard check valve <br />applications. All brass. Buna-N disc <br />(standard). Teflon and Viton available. <br />FIG 158 / 158 B <br />FIG 158 B series - Fitted with heavy <br />Available with Expansion Relief. <br />spring &metal seat and used for "back <br />NOTE: pressure settings are <br />approximate. <br />pressure" applications. All brass. <br />Special pressure settings are <br />Fig 158 BDI - Ductile iron. (2" size only) <br />available in the 158 B series for an <br />Fig 158 BSS - Stainless steel. <br />extra charge. <br />SIZE <br />WEIGHT OPENING PRESSURE <br />3/4" .........................................4.25 <br />(Fig 158 B series) <br />lbs ........................................... 4 PSI <br />1" ............................................1.75 <br />lbs .......................................... 4 PSI <br />1 1/2 ........................................3.25 <br />lbs .......................................... 6 PSI <br />2.. .............................................5.75 <br />lbs .......................................... 6 PSI <br />3" .............................................15 <br />lbs............................................. 8 PSI <br />4" .............................................10 <br />lbs ............................................. 8 PSI <br />