CAST STEEL BOLTED BONNET   Giant Gate Valves for a prestigious Refinery in the Middle East   Features Hawa Valves Cast Steel Gate Valves have been designed to meet the requirements of API 600 - ISO 104 34 / BS 1414 / API 603 / API 6D-ISO 14313 /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 The stem nut design allows for the removal of the hand-wheel while keeping the Stem and Gate in a fixed position. Anti-frictional Ball bearings are provided in higher sizes and classes. The strength of Stem to Gate connection is stronger than the strength of the Stem at the root of the operating thread Outside screw and yoke construction All the valves provided with backseat arrangement Bi-directional shut-off The gland is of self aligning two piece type Deep stuffing box Body ports are streamlined, permitting unobstructed flow, reduces turbulence, results in lower pressure drop & lower erosion The Seat-rings are cylindrical bottom seated type having ample cross section for strength are provided with welded in and threaded Seat-rings will be supplied on request. In case of SS valves the Seat-rings are integral to Body The Body to Bonnet joint is flat in ISO PN 20 / ASME 150# valves, a male and female joint is used in PN 50 / 300# & PN 110 / 600# and ring joint is used in higher classes Valves meet the requirements of fugitive emission levels Shell category B as per MESC SPE 77/312 Options Solid, flexible, split wedge, double disc and parallel Slide Gate configurations 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 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 Wedge @ 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 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 ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L 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 Graphite Asbestos / Graphoil / PTFE Bonnet Gasket Corrugated Soft Iron / Corrugated SS / Spiral Wound SS 304 with Asbestos or Graphoil / Octagonal Ring 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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