Mobile Website
Series blowdown stop valve
Serial-type blowdown stop valve is mainly used to control the boiler water regular or continuous discharge pipeline, is suitable for high temperature and high pressure and medium flow rate of the combined stop valve
Application
Serial-type blowdown stop valve is mainly used to control the boiler water regular or continuous discharge pipeline, is suitable for high temperature and high pressure and medium flow rate of the combined stop valve. It is also suitable for sampling of high pressure vessels and reactors, high pressure discharge, boiler feed water pump bypass system release device, high flow rate flash conditions, etc.
Characteristic
• Body adopts full forging process, uniform structure, beautiful appearance, no structure defects;
• Two throttle discs are placed in the same valve body to avoid the group welding process of series valves and improve the reliability of valves;
• Proper valve operation can effectively reduce fluid scour, avoid valve damage, and extend valve life;
• Cobalt-based hard alloy is surfacing on the sealing surface to ensure high and poor hardness, wear and corrosion resistance, and effectively prolong the service life;
• The surface of the valve stem is treated with corrosion resistance and abrasion resistance, which can effectively reduce the opening and closing moment and make the operation easier;
• Driving mode: manual, electric, pneumatic and other driving forms.
Design Guides
| Design and manufacture | Connector size | Inspection and test | Pressure and temperature reference |
| NB/T 47044 | NB/T 47044 | NB/T 47044 | NB/T 47044 |
| ASME B16.34 | ASME B16.25 | ASME B16.34 | ASME B16.34 |
Product Range
| Nominal pressure | PN16～PN420（Class150—Class2500） | |
| Nominal size | DN10～DN65（NPS 3/8～NPS 2 1/2 ） | |
| Body matenal | 20、25、A105、F36.CL2、F22.CL3 | |
| Test pressure(MPa) | Strength test (Water pressure) | 1.5×P(38℃ pressure rating) |
| Sealing test (Water pressure) | 1.1×P(38℃ pressure rating) | |
| Applicable Temperature | -29℃～575℃ | |
| Applicable medium | Steam, water | |
Note：
1、The valve beyond the above specifications can be customized according to user requirements;
2、The applicable temperature range of each valve shall be subject to the actual pressure bearing material of the valve.