Gate Valves
Gate Valves are used where a minimum of pressure drop through (The valve is important. They are employed where valves are normally to be Wide open or completely closed. They are designed to permit either a straight, full & free flow of the fluid or no flow at all.
• Fully open/Fully Closed Non Throttling
• Minimum resistance to Line Flow
• Infrequent Operation
CAST STEEL GATE VALVE UOTSIDE SCREW & YOKE TYPE, BOILED BONNET RISING STEM
RISING STEM-OUTSIDE SCREWN& YOKE
The construction keeps stem threads outside the valve & is recommended where high temperature, corrosive, & solids in the line might damage stem threads inside the valve. When the handwheel is turned, the stem rises as the yoke bushing engages the stem threads enable the easy lubrication. Care must be taken, however, to protect exposed stem threads from damages
BOLTED BONNETS.
Valves with bolted bonnets may be easily dismantled with conventional wrenches. Body & Bonnet flanges are usually furnished with flat faces or male & female joints.
FLEXIBLE DISC
Flexible disc are wedge seated with disc faces joined at The center by a hub. This Design enables disc faces to compensate for variable temperatures & pressures & allows valve to operate at lower torques. This disc is offered in steel gate valves only.
CAST STEEL GATE VALVES
| PART TIME | MATERIAL SPECIFICATION | ||
|---|---|---|---|
| Body | ASTM A 216 GR. WCB | ASTM 351 GR CF8/CF8M | |
| Body | ASTM A 216 GR. WCB | ASTM 351 GR CF8/CF8M | |
| Body | ASTM A 216 GR. WCB | ASTM 351 GR CF8/CF8M | |
| Body | ASTM A 216 GR. WCB | ASTM 351 GR CF8/CF8M | |
| Body | ASTM A 216 GR. WCB | ASTM 351 GR CF8/CF8M | |
ALTERNATE MATERIAL OF CONSTRUCTION :-
WC6, WC9, LCB, LC6 CF3, CF3M, CN7M, CG3M, HESTALLOY C & B, MONEL, TITANIUM
CLASS 150
| SIZE | 25 | 40 | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 |
| A | 127 | 165 | 178 | 190 | 203 | 229 | 267 | 292 | 330 | 356 |
| B | 250 | 260 | 321 | 336 | 421 | 493 | 660 | 804 | 990 | 1167 |
| OW | 125 | 180 | 200 | 200 | 225 | 250 | 350 | 450 | 500 | 500 |
All the dimensions are in M.M. Dimensions of Higher sizes & Class will be furnished on request.
CLASS 300
| SIZE | 25 | 40 | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 |
| A | 165 | 330 | 356 | |||||||
| B | 330 | 804 | 990 | 1167 | ||||||
| OW | 125 | 180 | 200 | 200 | 225 | 250 | 350 | 450 | 500 | 500 |
All the dimensions are in M.M. Dimensions of Higher sizes & Class will be furnished on request.
SPECIFICATIONS
| Design Standard | : API 600 / BS 1414 / ASME B 16.34 |
| Face to Face | : ASME B 16.10 |
| Flanged Ends | : ASME B 16.5 R/F |
| Buttweld Ends | : ASME B 16.5 |
| Testing | : API 598 |
| MANUFACTURING RANGE | ||
|---|---|---|
| SIZE | PRESSURE RATING | |
| 25 MM TO 400 MM | 150 # TO 1500 # | |
| INSPECTION & TESTING | |||
|---|---|---|---|
| CLASS | SHELL | SEAT | |
| HYDROSTATIC | HYDROSTATIC | AIR | |
| 150 # | 30 Kg/Cm2 | 22 Kg/Cm2 | 7 Kg/Cm2 |
| 300 # | 77 kg/Cm2 | 55 kg/Cm2 | 7 Kg/Cm2 |
Available on Request
• Stellite facing
• Jacketed Construction
• Sluice Gate Valve
• Valve Under “X-Ray” Quality
• Gear operated
• Motor Operated Valve