Gate Valves
Description
- Gate Valves – Flanged Ends, Screwed Ends and Socket Weld Ends
- Stainless Steel Gate Valves for Process lines and Special purposes
- Carbon Steel Gate Valves for Steam / Thermic Fluid and Utility Lines
Features
- Suitable for high temperature service
- Low fugitive emission
- Spindles of high quality stainless steel, ground and polished for a very smooth finish for extended gland life
- Gland packing ranging from Graphite, Braided and Reinforced Graphite with SS wires, PTFE, PTFE Chevron, Braided and Reinforced PTFE with SS wires
- Live load on gland packing for extended low fugitive emission service
- Optional stelliting of seats and wedge faces for longer life
- Solid and flexible wedge design options
- Wide range of body-bonnet gasket options like Graphite, Spiral wound SS with Graphite, PTFE and other fillers
- Gear, Electric and Pneumatic Cylinder operators can be provided
-
Why fugitive emission is so critical
In a petroleum plant, 60% of fugitive emission happens from valves. Hence it is critical to reduce the fugitive emission from valves as much as possible
Tables
| Part No |
Description | Material |
|---|---|---|
| 1 | Body | Cast Carbon Steel to ASTM A 216 Gr WCB, ASTM A 352 Gr LCB, ASTM A 351 CF8,CF8M,CF3,CF3M and other Nickel Alloys |
| 2 | Bonnet | |
| 3 | Seat | CS with 13% Cr Deposit / SS 304 / SS 316 / SS 316L / other Nickel Alloys / Stellite (Optional) |
| 4 | Wedge | |
| 5 | Stem | SS 410 / 304 / 316 / MONEL / HAC / other Nickel Alloys |
| 6 | Back Seat | Integral / Stellite (Optional) |
| 7 | Gland Flanges | Same as Body & Bonnet |
| 8 | Gland Packing | Graphite, Braided and Reinforced Graphite with SS wires, PTFE, PTFE Chevron, Braided and Reinforced Graphite with SS wires |
| 9 | Body-Bonnet Gasket | Graphite, Spiral wound SS with Graphite, PTFE and other fillers |
| 10 | Stem Bush | EN 1A / Alloy Iron / Al. Bronze |
| 11 | Stem Bush Retainer | CS to IS 1570 / SS |
| 12 | Hand Wheel | Fabricated MS / Malleable Iron |
| 13 | Fasteners | ASTM A193 / ASTM A194 Carbon Steel / Stainless Steel |
| 14 | Hand wheel Nut | CS to IS 1570 / Stainless Steel |
| Size | 50 | 65 | 80 | 100 | 150 | 200 | 250 | 300 | Class 150 |
| F/F | 178 | 190 | 203 | 229 | 267 | 292 | 330 | 356 | |
| H | 420 | 440 | 540 | 625 | 765 | 950 | 1160 | 1390 | |
| ØHW | 200 | 200 | 250 | 300 | 350 | 400 | 450 | 500 |
- Gate Valves generally conform to API 600 / BS 1414 / ISO 10434
- Hydrostatic and Pneumatic testing as per API 598 / EN 12266-1 / BS 6755-1
- Face-to-Face dimensions ASME B16.10 for Flanged Valves