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

Gate Valves

Cast Through Conduit - API 6D

Our Features

These HawaValves have been designed to meet the requirements of 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
Slab type gate to avoid jamming associated with wedge gate
Pressure energized floating seat rings with PTFE inserts
Weather proof operating system
Easy maintenance with valve in-line
Through conduit piggable passage
Anti-frictional Ball bearings are provided in higher sizes and classes
Outside screw and yoke construction
All the valves provided with backseat arrangement
Bi-directional shut-off
Deep stuffing box
Body ports are streamlined, permitting unobstructed flow, reduces turbulence, results in lower pressure drop and lower erosion
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
Specially designed die formed graphite packing, controlled clearance between stem, gland & bonnet bushing for guaranteed low emissions meet 100 ppm maximum fugitive emission levels as per Shell SPE 77/312

Our Features

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
Gate @	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
Yoke	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
Seat Insert	PTFE / VITON
'O' Ring	VITON
Back Seat Bushing	ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Gland Nut	ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Stem Nut	ASTM A 439 Gr.D2 / Al. Bronze
Lock Nut	Carbon Steel / SS 304
Gland Packing	Chevron Ring / Graphoil / PTFE
Bonnet Gasket	Soft Iron / SS 304 / Graphoil
Gland Eye - Bolt & Nut	Carbon Steel / Stainless Steel
Cross Bolts & Nuts	Carbon Steel / Stainless Steel
Hand Wheel	Carbon Steel
Stem Enclosure	Carbon Steell
Hand Wheel Nut	Carbon Steel
Stem Indicator	Stainless Steel
Drain Plug	Stainless Steel
Anti-friction Bearing	Standard
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 Gate and Seat Rings will be ENP coated unless specified otherwise overlayed with 13% CR. or STELLITE 6 as per customer specifications.