CAST STEEL PRESSURE SEAL BONNET     Features Hawa Pressure Seal Globe Valves have been designed to meet the requirements of BS 1873 /ASME B 16.34 Face to Face and End to End dimensions conform to ASME B 16.10 / ISO 5752 / BS 2080 / DIN End flange dimensions conform to ASME B 16.5 / ISO 7005-1 / API 605 / BS 3293 / DIN Butt weld end dimensions conform to ASME B 16.25 Anti-frictional Ball bearings are provided for ease of operation. Outside screw and yoke construction All the valves provided with backseat arrangement duly satellite faced The gland is of self aligning two piece type Deep stuffing box The Seat-rings are satellite faced shoulder seated type having ample cross section for strength are securely welded in place The gasket design ensures self sealing under pressure The inner row of studs establish the initial seal of the Pressure seal joint Valves meet the requirements of fugitive emission levels Shell category B as per MESC SPE 77/312 Options Angle and Y type design available For low temperature and cryogenic services (cold box and non-cold box applications) extended bonnet as per BS 6364 available Locking arrangement Gear, Electrical, Hydraulic or Pneumatic actuator available Regulating, guided and soft seated plugs available Can be supplied with GRAYLOC END HUB, under project license from GRAYLOC PRODUCTS®, UK. Materials Part Name Material Option Body ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB Bonnet ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB Disc @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB Back Up Ring ASTM A 216 WCB / A 351 CF8 / A 351 CF8M Thrust Ring ASTM A 216 WCB / A 351 CF8 / A 351 CF8M Stem ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L Seat Rings @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB Back Seat Bushing Stellited Gland ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L Gland Flange Carbon Steel / Stainless Steel Stem Nut ASTM A 439 Gr.D2 / Al. Bronze Lock Nut Carbon Steel / SS 304 Gland Packing Gland Packing Bonnet Gasket Corrugated Soft Iron / SS 304 / Graphoil Gland Eye - Bolt & Nut Carbon Steel / Stainless Steel Cross Bolts & Nuts Carbon Steel / Stainless Steel Hand Wheel Carbon Steel Hand Wheel Nut Carbon Steel Grease Nipple Carbon Steel Grub Screw Carbon Steel Studs / Bolts ASTM A 193 B7 / A 193 B7M / A 193 BBM / A 320 L7 Nut ASTM A 194 2H / A 194 8 / A 194 8M / A 194 4 / 7 * Valves are available in Duplex & Super Duplex Stainless Steel and Nickel Aluminium Bronze. Please indicate Trim required and ask for individual technical data sheets provided separately for these special materials. @ CS & Alloy Steel Wedges and Seat Rings will be overlayed with 13% CR. or STELLITE 6 as per customer specifications.

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