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Cast steel ring joint gate valve is a kind of non-standard gate valve which is developed by our company to solve the long-standing problem of valve leakage at connecting section of return oil, thick oil and raw material oil delivery and production pipes. It’s particul-arly fit for the stage with temperature change and violent vibrateon.
The main structure features include
1. Sensible products structure, reliable sealing. Excellent performance and good looking.
2. Co hard alloy welded sealing surface, which is wearing resistant erosion proof, abrasion proof and long-lived.
3. The surface and the adjusting media of the valve shaft are nitrogenized so that it is erosion and abrasion resistant.
4. The middle flange, left flange and right flange all adopt metal ring connection, which effectively ensures that valves will not leak at the high-temperature or high pressure work condition.
5. There is no back ward sealing wtructure in the valve, so the sealing is reliable.
6. The material of the filling and the flange size can be chosen and matched according to the applications and the requirements of the users. That can satisfies all kinds of working requirements
Products specification
Model | Pressure (Mpa) | Driving manner | The nominal size range(mm) |
Z3a6 R JFS | 2.5 | Hand operated | DN50～400 |
Z4a6 R JFS | 4.0 | DN50～400 | |
Z5a6 R JFS | 6.4 | DN50～400 | |
Z3a6 R (C)JFS | 2.5 | Gear operated 、 Electric Driving | DN50～400 |
Z4a6 R (C)JFS | 4.0 | DN50～400 | |
Z5a6 R (C)JFS | 6.4 | DN50～400 |
(Technical specification)
Structural formation | BB (R) -BG-OS&Y |
Driving | Hand-operated Gear-operated Electric-driving |
Design standrd | GB/T 12234 |
Face to face | ASME B16.10 |
Flanged ends | GB/ T9113JB/T 79HG |
Test & inspection | JB/T9092 |
NotesThe sizes of serial valve connecting flange can be
designed according to customers’requirement.
Products performance specificatiion
Nominal Pressure (Mpa) | Intensity test pressure （ Mpa ） | Sealing test pressure （ Mpa ） | Temperature | Medium |
2.5 | 3.75 | 2.75 | ≤ 550 ℃ | Water 、 oil & gas |
4.0 | 6.0 | 4.4 | ||
6.4 | 9.6 | 7.04 |
Form of major parts materials
No. | Part name | Material | |
GB | ASTM | ||
1 | Body | WCBWC6WC9CF8CF3 | A216-WCBA217-WC6WC9C5 A351-CF8CF3CF8M CF3M |
2 | Seat | 2512Cr1MoV | A105A182-F11F22F5F9 |
3 | Wedge | WCBWC6WC9CF8CF3 | A216-WCBA217-WC6WC9C5 A351-CF8CF3CF8M CF3M |
4 | |||
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