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

Gate Valves

Steel Through Conduit - API 6A

Our Features

Hawa Valves Cast Steel Through conduit Gate Valves have been designed to meet the requirements of API 6A
Face to Face and End to End dimensions conform to API 6A
End flange dimensions conform to API 6A
Butt weld end dimensions conform to API 6A
Screwed end dimensions conform to API 6A
Collapsing movement of split gate away from seat during opening eliminates erosion and abrasion of seats and gate
Weather proof operating system
Easy maintenance with valve in-line
Through conduit piggable passage
Anti-frictional Ball bearings
Inside screw and yoke construction
Bi-directional shut-off
Sealant injector fittings
Body ports are streamlined, permitting unobstructed flow, reduces turbulence, results in lower pressure drop and lower erosion
Available in all popular bore sizes and PSL 1 through 4
Valves meet the requirements of fugitive emission levels Shell category B as per MESC SPE 77/312

Our Features

Slab gate with floating seats
Position indicator
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 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB / A 487 4A
Bonnet	ASTM A 216 WCB / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB / A 487 4A
Gate Guide Skirt	SS 304 / SS 316
Gate @	ASTM A 216 WCB / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB / A 487 4A
Spring	SS 304
'O' Ring	VITON
Seat Rings @	ASTM A 216 WCB / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB / A 487 4A
Seat	PTFE
Spindle	ASTM A 479 410 / A 479 304 / A 479 316 / A 479 304L / A 479 316L
Stem Nut	ASTM A 439 Gr.D2 / Al. Bronze
Bonnet Gasket	Low Carbon Steel / Stainless Steel
Cover Ring	VITON / Nitrile
Packing Injector	SS 410 / SS 304
Gland Packing	Chevron Ring / Graphoil / PTFE
Lantern Ring	SS 410 / SS 316
Gland Ring	Carbon Steel / Stainless Steel
Gland Nut	Carbon Steel / Stainless Steel
Bonnet Cap	ASTM A 216 WCB / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB / A 487 4A
Bearing	Standard
Pin	SS 410
Drive Screw	Carbon Steel
Hand Wheel	Carbon Steel
Locking Pin	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.