Unveiling the QFBV model Flange Ball Valve, an epitome of engineering excellence, designed to deliver flawless full bore, quarter-turn functionality for seamless on/off operations. This versatile valve is available in manual and automatic versions-be it electric or pneumatic-crafted with a sturdy two-piece construction that ensures effortless maintenance and a remarkably durable lifespan. It is the top choice for a wide array of industrial applications and utility services. Its adaptability is unrivaled, featuring an extensive selection of seats and body materials suitable for myriad industrial uses.
Testing
- Our Body Strength Test strictly complies with the rigorous BS EN 12266-1 standards, guaranteeing that the valve endures pressures up to 1.5 times its nominal pressure (PN), ensuring robust performance.
- The Seat Tightness Test is meticulously performed according to BS EN 12266-1, with testing pressure set at 1.1 times the nominal pressure, adhering to ISO 5208 Rate A, promising unparalleled protection against leakage.
- Pressure Testing: BS EN ISO 5208
Features
- Meticulously engineered, this valve features a robust two-piece ductile iron body and a full bore design, ensuring optimal flow management and efficiency.
- Equipped with a floating seat, spherical seat, and floating ball with adaptive sealing, this fireproof valve is perfect for fire protection pipelines, ensuring safety and reliability.
- Designed with a symmetrical valve seat, this valve guarantees non-directional switching, installation, sealing, and pressure, enhancing its adaptability across various applications.
- The valve stem features a wear-resistant bushing design, minimizing torque and extending operational life. The innovative self-tightening upper seal design ensures zero leakage even under high pressure.
- The upper flange adheres to the ISO5211 standard, ensuring seamless compatibility and consistent reliability across installations.
- The ball is treated or hard chrome plated, delivering exceptional material stability and surface wear resistance, which significantly enhances sealing efficiency and product longevity.
- The handle, featuring a positioning lock design, ensures easy and secure installation.
| 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 inquiries or more information, do not hesitate to contact us! We are dedicated to ensuring your satisfaction and providing exceptional service.
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