Extended rod American standard plug valve
I. Introduction:
The X343F extended-stem American Standard plug valve has a wiping action during the movement between its sealing surfaces. When fully open, it completely prevents the sealing surfaces from contacting the medium, so it can be used for media containing suspended particles. The cylindrical closing member of the plug valve can be opened and closed by rotating 90°, making this valve highly suitable for occasions requiring quick opening and closing. The plug valve has a simple structure and is easy to maintain and clean. For example, in a tapered plug valve with a tightening structure, you can remove the tightening nut, take out the washer and the plug, and then remove the plug from the valve body for cleaning and maintenance. This type of valve made of austenitic stainless steel is the preferred choice for the food and pharmaceutical industries. In emergency situations such as accidents, it can quickly connect or cut off the pipeline. Compared with gate valves and globe valves, it is more flexible to operate and faster to open and close. A plug valve uses a plug with a through hole as the opening and closing member, and the plug rotates with the valve stem to achieve the opening and closing action. The extended-stem American Standard plug valve is suitable for pipelines in industries such as petroleum, chemical, pharmaceutical, fertilizer, and power under working conditions with a nominal pressure of CLASS150~600 Lbs and a working temperature of -29~180℃, to cut off or connect the pipeline medium.
II. Features:
(1) Suitable for frequent operation, with quick and easy opening and closing.
(2) Low fluid resistance.
(3) Simple structure, relatively small volume, light weight, and easy maintenance.
(4) Good sealing performance.
(5) Not limited by installation direction, the medium can flow in any direction.
(6) No vibration, low noise.
(7) Bidirectional flow, more convenient for installation and use.
(8) The material of parts and flange dimensions can be reasonably selected according to actual working conditions or user requirements to meet various engineering needs.
III. Technical Parameters:
Pressure Class (Lb) | Material | ||||
Valve Body, Valve Bonnet | Plug | Adjustment Washer | Adjustment Gasket | O-ring | |
150, 300, 600 | Cast Steel | WCB, Monel Alloy, CF8, CF8M | F6, F316, F304L, F316L | Reinforced Polytetrafluoroethylene | Fluororubber |
Stainless Steel | |||||
Ultra-Low Carbon Stainless Steel | |||||
IV. Manufacturing Standards:
Design and Manufacturing | Face-to-Face Dimensions | Flange Dimensions | Butt Welding End Dimensions | Pressure-Temperature | Test and Inspection |
API600 | ANSI B16.10 | ANSI B16.5a | ANSI B16.25 | ANSI B16.34 | API 598 |
V. Pressure Testing:
Nominal Pressure | Shell Test | Water Sealing Test | Gas Sealing Test | |||
MPa | Lbf/in² | MPa | Lbf/in² | MPa | Lbf/in² | |
150 | 3.1 | 450 | 2.2 | 315 | 0.5～0.7 | 60～100 |
300 | 7.8 | 1125 | 5.6 | 815 | ||
600 | 15.3 | 2225 | 11.2 | 1630 | ||
900 | 23.1 | 3350 | 16.8 | 2440 | ||
1500 | 38.4 | 5575 | 28.1 | 4080 | ||
2500 | 64.6 | 9367 | 47.4 | 6873 | ||
| Machinery & Equipment/Valves/Plug Valves | |
