hawa - ball valves, check valves, double block & bleed valves, plug valves, gate valves, globe valves, butterfly valves, cryogenic valves.

Cryogenic Valves

Our Features

Hawa Valves Cast Steel Globe Valves have been designed to meet the requirements 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 in higher sizes and classes.
Outside screw and yoke construction
All the valves provided with backseat arrangement
The gland is of self aligning two piece type
Deep stuffing box
The Seat-rings are shoulder 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 a male & female in ISO PN 20, PN 50 & PN 110 / ASME 150#, 300# & 600# valves 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

Our Features

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
Bellow Seal for critical service and hazardous media ( MODEL NO. : GL BB BS)

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
Disc Nut	ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
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
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
Grub Screw	Carbon Steel
Studs / Bolts	ASTM A 193 Gr B7 / A 193 Gr B7M / A 193 Gr B8 / A 193 Gr B8M / A 320 Gr L7
Nut	ASTM A 194 Gr B7 / A 194 Gr B7M / A 194 Gr B8 / A 194 Gr B8M / A 194 Gr 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.