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Trim No.: | Trim 8 As Standard | Design: | BS 1873 |
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End Connection: | Flange, BW | Body Material: | Carbon Steel, Stainless Steel |
Operation: | Manual, Bevel Gear | Face To Face: | ASME B 16.34 |
High Light: | angle globe valve,bolted bonnet globe valve |
Cast Steel Material Flanged End Plug Disc BS1873 Globe Valve For WOG Applications
Specifications
Disk & Seat & Stem of Globe valves
DISK: The most common disk designs for Globe valves are: ball disk, composition disk and the plug disk. Ball disk design is used primarily in low pressure and low temperature systems. It is capable of throttling flow, but in principle it is applied to stop and start flow.
Composition disk design uses a hard, non-metallic insert ring on the disk, which ensures a tighter closure.
Plug disk design provides better throttling than ball or composition designs. They are available in many different designs and they are all long and tapered.
SEAT: Globe valve seats are either integrated or screwed in to the valve body. Many Globe valves have backseats inside the Bonnet. Back seats provide a seal between the stem and Bonnet and prevents system pressure from building against the valve packing, when the valve is fully open. Back seats are often applied in Globe valves.
STEM: Globe valves use two methods for connecting the disk and the stem: the T-slot and the disk nut construction. In the T-slot design, the disk slides over the stem, while in the disk nut design, the disk is screwed into the stem
Material Specifications
Parts Name | Carbon Steel to ASTM | Alloy Steel to ASTM | Stainless Steel to ASTM | |||||||
Body | A216 WCB | A352 LCB | A217 WC1 | A217 WC6 | A217 WC9 | A217 C5 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
Bonnet | A216 WCB | A352 LCB | A217 WC1 | A217 WC6 | A217 WC9 | A217 C5 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
Bolt | A193 B7 | A320 L7 | A193 B7 | A193 B16 | A193 B16 | A193 B16 | A 193 B8 | A 193 B8 | A 193 B8 | A 193 B8 |
Nut | A194 2H | A194 2H | A194 2H | A194 4 | A194 4 | A194 4 | A194 8 | A194 8 | A194 8 | A194 8 |
Gland | A182 F6a | A182 F6a | A182 F6a | A182 F6a | A182 F6a | A182 F6a | 304 | 316 | 304L | 316L |
Gland Flange | A216 WCB | A352 LCB | A217 WC1 | A217 WC6 | A217 WC9 | A217 C5 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
Disc | A216 WCB | A352 LCB | A217 WC1 | A217 WC6 | A217 WC9 | A217 C5 | A351 CF8 | A351 CF8M | A351 CF3 | A351 CF3M |
Gasket | SS Spiral Wound W/graphite, or SS Spiral Wound W/PTFE, or Reinforced PTFE | |||||||||
Packing | Braided graphite, or Die-formed graphite ring or PTFE | |||||||||
Stem Nut | Copper alloy or A439 D2 | |||||||||
Hand Wheel | Ductile Iron or Carbon Steel |
Contact Person: sales
Tel: +8613660157288
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