17 www.morbros.com CHECK VALVES Options/Description Expansion relief available; specify 25 or 50 PSI when ordering. Fig. 246A… brass body, cap and internals. Threaded connections. Cold, non-shock pressure limit = 200 PSI WOG. Fig. 246ADI… same as 246A, but constructed of ductile iron. Fig. 246DRF… same as 246ADI, but with 150# raised-face anged connections. Fig. 246DRF Fig. 830 * Available with expansion relief. Specify 25 PSI or 50 PSI. NOTE… opening pressure settings are approximate Fig. 335B Construction Details Body and cover plate…cast iron (epoxy coated) Cap…brass Insert/poppet assembly…brass Gasket…Viton® Fig. 246A Swing Check Valve Used for single-direction ow in a horizontal pipeline and/or to isolate product in a multi-product handling system. Poppet and seats are metal and may allow some seepage over long periods of time. Expansion relief is available. Vertical Check Valve With Extractable Poppet… for use in check valve applications where easy access is to be maintained for poppet removal and repair. Plate detaches from valve body allowing access to poppet/seat assembly. Double Poppet Vertical Check Valve For standard check valve applications such as “holding prime” on a pump. Metal poppets/seats. All brass construction and made to be mounted in the vertical position with product ow upward. Fig. 335BP… same as Fig. 335B, but equipped with a test plug. Angle Check and Back Pressure Valve Single Poppet/Spring Loaded… Fig. 137… tted with a light spring and soft seat and made for standard check valve applications. All brass. Buna-N disc (std). Te on® and Viton® available. Fig. 137B… tted with heavy spring and metal seat. Used for “back pressure” applications. All brass construction. Vertical Check and Back Pressure Valve Single Poppet/Spring Loaded… Fig. 158A… tted with a light spring and soft seat and made for standard check valve applications. All brass. 4" body is aluminum. BunaN disc (std). Te on® and Viton® available. Fig. 158B… tted with heavy spring and metal seat. Used for “back pressure” applications. Brass. Size Weight 1½" 4.75 lbs 2" 6.50 lbs Size 246 A 246 ADI 246DRF 1½" 3.50 lbs NA NA 2" 6.00 lbs 5.50 lbs NA 3" 13.2 lbs 12.5 lbs 26.75 lbs 4" NA NA 71.00 lbs Size Weight 1½" 8.25 lbs Size Weight Opening Pressure ( Fig. 137B) 1½" 4.25 lbs 6 PSI 2" 6.25 lbs 5 PSI 3" 13.5 lbs 7 PSI * Available with expansion relief (1" to 4"). Specify 25 PSI or 50 PSI. NOTE… opening pressure settings are approximate Size Weight Opening ( Fig. 158B) Pressure ( Fig. 158B) ¾" 1.25 lbs 4 PSI 1" 1.75 lbs 4 PSI 2" 5.75 lbs 6 PSI 3" 15.0 lbs 8 PSI 4" 8.00 lbs 5 PSI * Fig. 137/137B * Fig 158/158 B 246 A Series 830 335 B Series 137 Series 158 Series Fig. 958 In-Line Check Valve The stainless steel Fig. 958 Check Valve is used on storage tank systems to allow product ow in only one direction. Available with or without expansion relief. Fig. 958B… BSP threads. Size Weight ½" 0.7 lbs ¾" 0.9 lbs 1" 1.5 lbs 958
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