Custom Heavy hammer hydraulic butterfly valve triple eccentric type Manufacturers, Factory
Product Description
Product Specifications
| Valve Type: | Eccentric butterfly valve | Structure: | Eccentric |
| Standard: | EN/DIN/API | Workmanship: | Investment casting |
| Sealing direction: | Single-directional | Sealing grade: | Zero leakage |
| Temperature: | -20°C < T < 120°C | Operation: | Hydraulic control |
Characteristics
The heavy hammer type hydraulic control butterfly valve is an important subdivision type of hydraulic control adjustable butterfly valve. It takes the hammer potential energy as the core energy storage and valve closing power, integrates hydraulic control technology and butterfly valve structure advantages, and has multiple functions of cut-off, check and precise regulation, making it a key equipment to ensure the safe and stable operation of the pipeline system. The valve has prominent core characteristics, with safety redundancy design. Driven by the potential energy of the hammer's gravity, it is independent of the power grid and hydraulic station. In case of power failure or pressure loss, it can automatically close according to the preset program in milliseconds.
Advantages
The hammer butterfly valve adopting a "fast front closing, slow back closing" timing logic to perfectly eliminate water hammer effects and protect pipelines and core equipment; The closing angle and fast/slow closing duration can be set as needed to adapt to different working conditions.
This hydraulic butterfly valve adopting a multi-level combination of soft and hard seals to achieve bidirectional zero leakage; The valve body and valve plate are made of high-strength alloy material, which is suitable for harsh environments such as high pressure, strong corrosion, and high particle media. The maintenance cycle is long and the operation and maintenance cost is low.
The valve body is installed horizontally, and the sealing forms are divided into metal hard seal and rubber soft seal, matched with corresponding eccentric structure, with low flow resistance and low energy consumption; The hydraulic station can be installed as a whole or separately, with automatic pressure holding function, and the pressure holding time can reach more than 168 hours.
Material Specifications
| Body | ASTM A216 Gr. WCB |
| Disc | ASTM A216 Gr. WCB |
| Disc seal ring | EPDM |
| Seat (Surfacing) | 304 |
| Upper shaft | ASTM A276 Gr. 420 |
| Lower shaft | ASTM A276 Gr. 420 |
| Pin | ASTM A276 Gr. 420 |
| Retaining ring | SS304 |
| Screw | SS304 |
| Bushing | SF-1 |
| Yoke | ASTM A216 Gr. WCB |
Dimension
Packing
Standard export wooden case packaging
Application Scenarios
The heavy hammer butterfly valve applied to the inlet of water turbines in hydropower stations, water conservancy/drainage pump stations, power plant circulating water systems, petrochemical pipelines, etc., especially suitable for the outlet of water pumps, it is necessary to achieve critical working conditions of cutoff, check and safety protection simultaneously.
Frequently Asked Questions (FAQ)
It is an eccentric butterfly valve manufactured under EN, DIN, and API standards utilizing investment casting workmanship for maximum structural integrity.
The valve uses heavy hammer potential energy as its core energy storage. It operates independently of the power grid and hydraulic station, enabling automatic closure in milliseconds according to preset programs during power or pressure loss.
The valve applies a "fast front closing, slow back closing" timing logic. Closing angles and timing durations can be set to effectively neutralize water hammer effects and shield connected equipment.
It employs a multi-level combination of soft (EPDM) and hard (304 surfacing) seals to achieve zero leakage, operating smoothly within a temperature range of -20°C to 120°C.
It is ideal for water turbine inlets in hydropower stations, drainage pump station outlets, power plant circulating water systems, and petrochemical pipelines where cut-off, check, and regulation functions are required simultaneously.
