Shanghai Zhonghang brand ZHDFVSW-3 "-3200LB/F91 ultra supercritical electric high temperature and high pressure drain valve has independently developed a hard sealed ball valve suitable for high temperature and high pressure working conditions through years of experience in power plants and analysis and in-depth research on valve failures in various boiler plants, steam turbines, and auxiliary equipment plants.It fills the gap in domestic high-temperature and high-pressure drain valves and replaces a series of imported drain valves in the form of VTI and MOGAS. Our experience has led us to choose materials with higher hardness, thereby enhancing wear resistance while reducing wear opportunities. The hardness of the valve seat surface is Rockwell hardness HRC62, ensuring no scratches or particle infiltration, avoiding wear and forming dangerous leakage channels. Through continuous metallurgical research and development design, technologies have been developed to overcome various wear issues. Suitable for high temperature, high pressure, high solid content media, wear-resistant and corrosion-resistant working conditions, including power plants, petrochemical and mining industries.
On site solution for thermal expansion jamming under high temperature and high pressure conditions of the product: When the working condition suddenly rises from the cold temperature to the design temperature, or drops from the design temperature to the cold temperature, the Zhonghang brand ball valve can withstand thermal shock. The sealing surfaces of the sphere and valve seat are made of the same material, ensuring the same thermal expansion (same coefficient of thermal expansion) in the event of sudden heating.
Main application scenarios: A type of valve used for boiler drainage, steam turbine drainage, boiler fixed discharge continuous discharge water supply system drainage, steam drum discharge, super heater discharge and drainage, ash blower isolation, bypass pipeline isolation, and economizer header drainage.
Product features:
- Compared to cut-off type drain valves, they have advantages such as large drainage flow rate, no erosion, and fast opening and closing speed.
- Adopting a split structure for on-site replacement and maintenance is convenient and fast, with a long service life.
- The proprietary layer independently developed is more suitable for harsh working conditions such as high temperature and high pressure cavitation.
- Replacing imported multi brand products with VTI and MOGAS series.
- According to the customerˇŻs on-site use, multiple operating methods can be selected, including manual, pneumatic, electric, and hydraulic.
- Valves have the characteristic of getting better as they are used, and the stress released by the valve body is better than that of new products when repaired and continued to be used in the later stage.
Execution standards: Design standard: ISO.17292-2004 Structural length: according to factory or customer standards Connection size: ASME B16.11 Inspection standard: MSS-SP-61
Component Material Selection Table:
ZHDFVSW-3"-3200LB/F91 ultra supercritical electric high temperature and high pressure drain valve main parts selection table |
Part name |
Carbon steel A105 |
High temperature alloy steel F22 |
Ultra supercritical alloy steel F91 |
Valve body |
ASTM A105 |
A182 F22 |
A182 F91 |
Valve seat |
Inconel718+sprayed chromium carbide |
Inconel718+sprayed chromium carbide |
Inconel718+sprayed chromium carbide |
Sphere |
Inconel718+sprayed chromium carbide |
Inconel718+sprayed chromium carbide |
Inconel718+sprayed chromium carbide |
Valve stem |
Inconel718 |
Inconel718 |
Inconel718 |
Valve stem sealing ring |
304SS+Flexible graphite |
INCONEL wire+Flexible graphite |
INCONEL wire+Flexible graphite |
Spring |
INCONEL X-750 |
INCONEL X-750 |
INCONEL X-750 |
Bolt |
A193 B7 |
A193 B16 |
A193 B16 |
Nut |
A194 2H |
A194 4 |
A194 7 |
Product performance parameter:
ZHDFVSW-3"-3200LB/F91 ultra-supercritical electric high temperature and high pressure drain valve performance parameters |
Product model |
ZHDFVSW-3"-3200LB/F91 |
Testing form |
Air pressure test 0.6MPa (subject to no leakage) |
Pressure ratingŁ¨ClassŁ© |
1500LB |
3200LB |
4500LB |
Valve body strength testŁ¨ClassŁ© |
2250LB |
4800LB |
6750LB |
Valve sealing testŁ¨ClassŁ© |
1650LB |
3520LB |
4950LB |
Valve applicable temperature range |
-100ˇć~650ˇć |
Connection type |
BW SW |
Main body material |
A105 12Cr1MoV F22 F91 F92 |
Applicable medium |
Water,steam etc |
Drive type |
Manual,pneumatic,electric |
The above data is for reference only,when placing an order, please provide the size of the connecting pipe, which can be designed and manufactured according to user requirements. |