Bolt bonnet lift plug valve is widely utilized in petroleum, chemical industry, metallurgy, etc. Lift hard seal plug valve can connect or cut off medium in pipelines in case of back flow of medium.
Opening and closing of the valve is carried out while the sealing surface is taken off, so it will not cause abrasion on the sealing surface.
Nominal pressure: Class 150-900Lb
Nominal diameter: 1/2-14 inch
Working principle
When opening the valve, first of all, turn the hand wheel to make the plug lifted and separated with the sealing surface, the turn the handled by 90 degree to connect the channel of plug the channel of valve body. So the valve is opened. When closing the valve, first of all turn the handle by 90 degree to mark the channel of plug vertical to the channel of valve body, and then the hand wheel to descend the plug. So the valve is closed.
Standards
Design: API 599, API 6D
Face to face: ANSI B16.10
Flanged end: ANSI B16.5
Butt welded end: ANSI B16.25
Materials
NO.
Part name
Material
A216 WCB
A217 WC9
A217 C5
A351 CF8
A351 CF8M
A351 CF3
A351 CF3M
1
Body
A216 WCB
A217 WCB
A217 C5
A351 CF8
A351 CF8M
A351 CF3
A351 CF3M
2
Plug
A351 CF8
A351 CF8
A351 CF8
A351 CF8
A351 CF8M
A351 CF3
A351 CF3M
3
Gasket
Flexible
graphite+stainless steel/PTFE
4
Cover
A216 WCB
A217 WC9
A217 C5
A351 CF8
A351 CF8M
A351 CF3
A351 CF3M
5
Bolt
A193 B7
A193 B16
A193 B16
A1293 B8
A193 B8M
6
Nut
A194 2H
A194 4
A194 4
A194 8
A194 8M
7
Packing
Flexible
graphite/PTFE
8
Gland
A216 WCB
A216 WC9
A216 C5
A351 CF8
A351 CF8M
9
Wrench
A216 WCB
A216 WC9
A216 C5
A351 CF8
A351 CF8M
10
Yoke nut
A439-D2/Cu-Allog
11
Hand wheel
ASTM A536
Gr.60-40-18 A216 WCB