Q41F Three-piece Flanged Ball Valve
I. Introduction:
The seat of the three-piece flanged ball valve adopts an elastic sealing structure, ensuring reliable sealing and smooth operation. The valve stem features a bottom-mounted design with a back-sealing structure, preventing the valve stem from being ejected even under abnormal pressure buildup in the valve cavity. The valve body is cast using advanced technology introduced from Taiwan, with a reasonable structure and elegant appearance. Drive modes: manual, electric, pneumatic. A 90° opening/closing positioning mechanism can be installed, and a lock can be added as needed to prevent misoperation. The three-piece flanged ball valve uses a sphere with a circular passage as the opening/closing element, which rotates with the valve stem to achieve opening and closing actions. The opening/closing element of the ball valve is a perforated sphere that rotates around an axis perpendicular to the passage, thereby achieving the purpose of opening and closing the passage. Ball valves are mainly used to cut off or connect media in pipelines and equipment, and can also be used for fluid regulation and control. They have small fluid resistance, simple structure, small volume, light weight, reliable sealing, convenient operation and maintenance, will not cause erosion of the valve sealing surface, and have a wide range of applications.
II. Product Features:
1. Single seat design. Eliminates the problem of abnormal pressure buildup in the valve cavity affecting operational safety.
2. Low-torque design. The valve stem with a special structure allows the valve to be opened and closed easily with just a small handwheel.
3. Frictionless opening and closing. This function completely solves the problem of traditional valves being affected by friction between sealing surfaces, which impairs sealing performance.
4. Three-piece structure. Valves installed on pipelines can be directly inspected and maintained online, effectively reducing unit downtime and lowering costs.
5. Wedge-shaped sealing structure. The valve relies on mechanical force provided by the valve stem to wedge the sphere tightly against the seat for sealing, ensuring the valve's sealing performance is not affected by changes in pipeline pressure difference, and providing reliable sealing performance under all operating conditions.
6. Self-cleaning structure for sealing surfaces. When the sphere separates from the seat, fluid in the pipeline flows evenly through the sphere's sealing surface at 360°, which not only eliminates local scouring of the seat by high-speed fluid but also washes away accumulated deposits on the sealing surface, achieving the purpose of self-cleaning.
III. Components:
Serial No. | Part Name | Material | |
Stainless Steel | Carbon Steel | ||
1 | Bolt | Stainless Steel 304 | Carbon Steel |
2 | Spring Washer | Stainless Steel 304 | Stainless Steel 304 |
3 | Nut | Stainless Steel 304 | Carbon Steel |
4 | Valve Cover | Stainless Steel SS316 | Carbon Steel WCB |
5 | Valve Body | Stainless Steel SS316 | Carbon Steel WCB |
6 | Sphere | Stainless Steel SS304 | Stainless Steel CF8 |
7 | Seal Ring | Polytetrafluoroethylene (PTFE) | Polytetrafluoroethylene (PTFE) |
8 | Valve Stem | Stainless Steel SS316 | Stainless Steel SS304 |
9 | Packing | Polytetrafluoroethylene (PTFE) | Polytetrafluoroethylene (PTFE) |
10 | Valve Stem Nut | Stainless Steel SS316 | Stainless Steel SS304 |
11 | Spring Washer | Stainless Steel SS304 | Stainless Steel SS304 |
12 | Nut | Stainless Steel SS304 | Stainless Steel SS304 |
13 | Handle | Stainless Steel SS304 | Stainless Steel SS304 |
IV. Dimensions:
SIZE | 1/2" | 3/4" | 1" | 11/4" | 11/2" | 2" | 21/2" | 3" | 4" |
d | 15 | 20 | 25 | 32 | 38 | 50 | 65 | 76 | 100 |
L | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 |
D | 95 | 105 | 115 | 135 | 145 | 160 | 180 | 195 | 230 |
D1 | 65 | 75 | 85 | 100 | 110 | 125 | 145 | 160 | 190 |
D2 | 45 | 55 | 65 | 78 | 85 | 100 | 120 | 135 | 160 |
b | 14 | 16 | 16 | 18 | 18 | 20 | 22 | 24 | 24 |
f | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 |
H | 75 | 95 | 90 | 110 | 130 | 140 | 170 | 180 | 250 |
E | 130 | 140 | 140 | 170 | 200 | 220 | 350 | 350 | 550 |
n-do | 4-14 | 4-14 | 4-14 | 4-18 | 4-18 | 8-18 | 8-18 | 8-18 | 8-22 |
| Machinery & Equipment/Valves/Ball Valves | |
