Introducing the QFBV model Flange Ball Valve, a masterpiece in valve engineering, designed to provide a full bore, quarter-turn solution for seamless on/off applications. Available in both manual and automatic (electric or pneumatic) versions, this valve is crafted with a robust two-piece construction, offering easy maintenance and a long-lasting operational life. It stands as the preferred choice for industrial applications as well as utility services. Its versatility is unmatched, thanks to a diverse range of seats and body materials that cater to a multitude of industrial purposes.
Testing
- Our Body Strength Test adheres to the stringent BS EN 12266-1 standards, ensuring the valve withstands a pressure of 1.5 times its nominal pressure (PN).
- The Seat Tightness Test is conducted as per BS EN 12266-1, with a testing pressure of 1.1 times the nominal pressure, following ISO 5208 Rate A, guaranteeing optimal leakage protection.
- Pressure Testing: BS EN ISO 5208
Features
- Crafted with precision, the valve boasts a two-piece ductile iron body and a full bore design, promoting efficient flow management.
- Featuring a floating seat, spherical seat, and floating ball coupled with adaptive sealing, this valve offers a fireproof design, making it ideal for fire protection pipelines.
- Engineered with a symmetrical valve seat design, it ensures that switching, installation, sealing, and pressure remain non-directional, enhancing its versatility.
- The valve stem incorporates a wear-resistant bushing design, ensuring minimal torque and extended lifespan. The self-tightening upper seal design guarantees zero leakage under high pressure.
- The upper flange is compliant with the ISO5211 standard, ensuring compatibility and reliability.
- With the ball solution treated or hard chrome plated, this design ensures superior material stability and surface wear resistance, enhancing sealing efficiency and product longevity.
- Easy installation is assured by the handle, which features a positioning lock design.
| 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 any inquiries or further details, please feel free to contact us! Your satisfaction is our priority.
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