Introducing the QFBV Model Flange Ball Valve, a masterpiece of engineering excellence tailored for full bore, quarter-turn, on/off applications. This versatile valve is available in both manual and automated configurations, with options for electric or pneumatic actuation. Its ingenious two-piece construction ensures simplicity and facilitates effortless maintenance, promising an extended service life. Therefore, it is a top choice for both industrial applications and utility services. With a diverse range of seats and body materials, this valve is adept at meeting the demands of various industrial sectors.
Testing
- Body Strength Test: Rigorously tested according to BS EN 12266-1, withstanding pressures of 1.5 times PN, ensuring uncompromised durability.
- Seat Tightness Test: Adheres to BS EN 12266-1 standards, with a stringent 1.1 times PN ISO 5208 Rate A compliance, guaranteeing superior seat tightness.
- Pressure Testing: Conducted in accordance with BS EN ISO 5208 to assure maximum reliability.
Features
- Boasting a two-piece ductile iron body, this full bore design offers unparalleled flow efficiency and robustness.
- Equipped with a floating seat, spherical seat, floating ball, and adaptive sealing, this valve is engineered with a fireproof design, suitable for integration into fire protection systems.
- The symmetrical design of the valve seat ensures non-directional operation, making switching, installation, sealing, and pressure handling effortlessly seamless.
- The valve stem features a wear-resistant bushing design, ensuring low torque operation and extended longevity. The self-tightening upper seal design guarantees zero leakage of the valve stem under high pressure conditions.
- Compliant with the ISO5211 standard, the upper flange is designed for seamless compatibility.
- The ball is meticulously treated-either solution treated or hard chrome plated-ensuring material stability, surface wear resistance, and enhanced sealing performance for a prolonged product lifecycle.
- Featuring a handle with a positioning lock design, installation is made intuitively easy and secure.
| No. |
Part Name |
Material |
Standard |
| 1 |
Body |
Ductile Iron |
EN GJS500-7 |
| 2 |
Bonnet |
Ductile Iron |
EN GJS500-7 |
| 3 |
Ball |
Stainless Steel |
SS304 |
| 4 |
Stem |
Stainless Steel |
SS304 |
| 5 |
Packing |
Rubber |
PTFE |
| 6 |
Hand Lever |
Ductile Iron |
EN GJS500-7 |
Dimensions
| INCH |
DN |
L |
D |
D1 |
b |
n-φD |
| PN10 |
PN16 |
| 1-1/4'' |
32 |
130 |
140 |
100 |
19 |
4-φ19 |
| 1-1/2'' |
40 |
140 |
150 |
110 |
19 |
4-φ19 |
| 2'' |
50 |
150 |
165 |
125 |
19 |
4-φ19 |
| 2-1/2'' |
65 |
170 |
185 |
145 |
19 |
4-φ19 |
| 3'' |
80 |
180 |
200 |
160 |
19 |
8-φ19 |
| 4'' |
100 |
190 |
220 |
180 |
19 |
8-φ19 |
| 5'' |
125 |
325 |
250 |
210 |
19 |
8-φ19 |
| 6'' |
150 |
350 |
285 |
240 |
19 |
8-φ23 |
| 8'' |
200 |
400 |
340 |
295 |
22 |
8-φ23 |
12-φ23 |
| 10'' |
250 |
450 |
405 |
355 |
24 |
12-φ23 |
12-φ27 |
For additional specifications and inquiries, please feel free to reach out to us!
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