2300 Series Check Valve
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Technical Data Body Construction Materials Note: Proper filtration is recommended to prevent damage to sealing surfaces. Features • Designed for high pressure service • Resilient o-ring • Single piece design Benefits • Less susceptible to contamination damage • Zero leakage at normal back pressure • Automatic compensation for wear • Cushioned, quiet closing Closing O-ring automatically establishes line of contact with conical seat to cushion closing and insure perfect sealing. Closed O-ring only seals. Full pressure is carried by metal-to-metal seat. Increasing pressure increases sealing efficiency. Circle Seal Controls 2301 Wardlow Circle • Corona, CA 92880 Phone (951) 270-6200 • Fax (951) 270-6201

-PP: Female / Female Pipe Dash No. Pipe Size B Hex C F G -MM: Male / Male Pipe Dash No. Pipe Size B Hex C E F Dia. G -MP: Male / Female Pipe Dash No. Pipe Size B Hex C E F Dia. G Circle Seal Controls Check Valves

-PM: Female / Male Pipe Dash No. Pipe Size B Hex C E F Dia. G -BB: Female / Female Tube Dash No. Tube Size B Hex C E Dia. G Circle Seal Controls Check Valves

23 49 R - 2 PP - 7 O-RING MATERIAL, TEMPERATURE & -STANDARD CRACKING RANGE 62 EPR, -65° F to +300° F, 0.5-1.5 psig 49 Buna N, -65° F to +250° F, 2-5 psig 59 Buna N, -65° F to +275° F, 0.5-1.5 psig 33 Neoprene, -40° F to +240° F, 2-5 psig 20 Teflon®, -100° F to +400° F, 5 psig 32 Viton®, -20° F to +400° F, 0.5-1.5 psig BODYMATERIAL A 2024-T4/T351 aluminum1 B Brass1 R 17-4 PH stainless steel T 303 stainless steel CRACKING PRESSURE Call out dash number if not standard* 7 7 psig CONNECTIONS P Female pipe, NPT M Male pipe, NPT B Female tube, AND10050 S British taper, male pipe X British taper,...