Description
DEMCO DM Серия Gate Клапаны 7500 PSI WP – 3 in. (80 mm) Полнопроходной
DEMCO DM Серия 3-inch Полнопроходной Gate Клапаны are heavy-duty API 6A compliant gate valves engineered for high-flow, high-pressure oilfield applications. With a 7500 PSI working pressure rating and 3-inch (80 mm) full port bore, these valves deliver maximum flow capacity for production manifolds, well testing, and large-diameter flowline systems.
Шпонка Features & Benefits
- Полнопроходной Design: 3.00 in. (76 mm) valve seat ID provides unrestricted flow path with minimal pressure drop
- Large Bore Производительность: 3-inch size handles high-volume fluid transfer for production and testing operations
- API 6A Compliant: Manufactured in accordance with API 6A, 17th Edition, paragraph 4.3.3 standards
- 7500 PSI Рабочее давление: Высокого давления rating suitable for demanding oilfield environments
- Dual End Соединение Options: Weld End or Фланцевый End (API Кольцо BX-154, 10,000 RTJ)
- Multiple Материал Configurations: 410 SS, 17-4 PH SS stem options; various gate/wear ring combinations
- Advanced Уплотнение Technology: Viton or HNBR elastomer options for different temperature and chemical environments
- Comprehensive Испытание: Three PSL groups with hydrostatic shell testing up to 11,250 PSI
Technical Specifications
| Specification | Value |
|---|---|
| Клапан Размер | 3 in. (80 mm) FP – Полнопроходной |
| Рабочее давление | 7500 PSI WP |
| Клапан Седло ID | 3.00 in. (76 mm) |
| End Connections | Weld End or Фланцевый End (API Кольцо BX-154) |
| Overall Высота (Открытый) | 24.60 in. (625 mm) |
| Overall Ширина | 23.00 in. (584 mm) DIA |
| Ручка Turns (Открытый to Закрытый) | 16.01 turns |
| Вес – Weld End | 256 lb. (116 kg) |
| Вес – Фланцевый End | 323 lb. (147 kg) |
| Корпус Материал | ASTM A487 Grade 4 Class D |
Фланцевый End Dimensions
| Dimension | Value |
|---|---|
| Dimension A – Weld End | 13.00 in. (330 mm) |
| Dimension A – Фланцевый End, API Длина | 24.38 in. (619 mm) |
| API Кольцо Number | BX-154 |
| Фланец ID | 3.06 in. (78 mm) |
| Фланец OD | 10.62 in. (270 mm) |
| Фланец Bolts (QTY – Размер) | 8 – 1 in. |
Гидростатический Test Requirements by PSL Group
| Test Тип | Group 1 | Group 2 | Group 3 |
|---|---|---|---|
| Shell Test | 11,250 PSI / 3 min | 11,250 PSI / 3 min + extended hold (charted) | Same as Group 2 |
| Седло Test | 7,500 PSI / 3 min each side | 7,500 PSI / 3 min + extended test (charted) | Same as Group 2 |
| Удар Test | N/A | -50°F (-46°C) on body, bonnet, stem, housing, packing retainer & bolting | Same as Group 2 |
| NDE Requirements | N/A | Surface NDE on body, bonnet, stem | Surface + Volumetric NDE on body & bonnet |
| Материал Traceability | Корпус & bonnet | Корпус, bonnet, stem, gate & bolting | Same as Group 2 |
В сборе Part Number Configuration
| Configuration | Code | Options |
|---|---|---|
| End Соединение | 3 / 4 | 3 – Фланцевый (10,000 RTJ) / 4 – Weld (3.50 in. OD x 2.30 in. ID for 3 in. XXH) |
| Корпус Configuration | 5 / 7 | 5 – Weld / 7 – Фланцевый |
| Шток Материал | 7 / 8 | 7 – 410 SS / 8 – 17-4 PH SS |
| Gate/Износ Кольцо Материал | 2 / 7 / 8 | 2 – Стальной/Стальной / 7 – 410 SS/410 SS / 8 – 17-4 PH SS/410 SS |
| Седло Кольцо Материал | 1 | 1 – 410 SS |
| Седло/Уплотнение Elastomer | 2 / 4 | 2 – Viton/Viton / 4 – HNBR/HNBR |
Уплотнение Материал Legend
- Bronze Втулка: ASTM B505 Alloy 93200 / SAE 660 – Provides low-friction stem guidance
- Плоский Top Follower: Precision machined follower plate for even load distribution
- Fabric Reinforced Уплотнение Кольцо: High-strength composite seal for reliable stem sealing
- Homogeneous Резиновый Уплотнение Кольцо: Uniform elastomer construction for bonnet sealing
- Плоский Bottom Переходник: Precision sealing adapter for seat ring assembly
Applications
- High-volume production flowlines and manifolds
- Well testing and flowback operations
- Fracturing and stimulation manifold systems
- Christmas tree and wellhead installations
- Высокого давления cementing and circulation services
- Газ lift and injection systems
- Large-diameter pipeline isolation
Why Choose 3-Inch Полнопроходной Gate Клапаны?
The 3-inch full port design provides significantly higher flow capacity compared to smaller sizes, making it the ideal choice for production operations where flow efficiency directly impacts output. The DEMCO DM Серия combines this large bore advantage with the same rugged API 6A construction and comprehensive testing standards that make DEMCO the industry standard for oilfield gate valves. With dual end connection options and multiple trim configurations, these valves can be tailored to specific operational requirements.
Контакт us today for competitive pricing, technical support, and fast delivery of DEMCO DM Серия 3-inch 7500 PSI full port gate valves for your oilfield operations.
