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Pressure Seal Cast Check Valves -Style A-

Swing Check and Tilting Disc

Dewrance Check Valves Cast High Pressure Style A - 6278 A range of swing check and tilting disc check valves,designed in accordance with ASME B16.34, for power industry services.

Features

•ASME B16.34 design, offered in swingcheck and tilting disc configurations in 4 standard cast body materials.•Easy assembly increased by a pressureseal closure with threaded ring (in small sizes) or segmental ring (in larger sizes,depending on pressure ratings).•Pressure seal-type closure of hinge pin. •Seat and disc are stellited gr. 6. •Seats are welded in. Swing Check Conf.: •Disc is equipped with standard anti-rotation device.•Friction ring in the connection betweenhinge and disc. Tilting Disc Conf.: •Disc is equipped with a dome to balancethe weight.•Spring-assisted closure to avoidslamming.

Technical data General application

Pressure ratings:ASME classes 900 &1500 (swing check);1500 & 2500 (tiltingdisc)Body materials:A216 WCB, A217 WC6,A217 WC9, A217 C12A Temperature (°C):-46 to +650 Sizes:50 to 400 (2”-16”) forswing check; 50 to 600 (2”-24”) for tilting discConnections standards:ASME B16.25 Recommended for power plant applications which require flow reversalprevention.

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