China Cheap price Temperature And Pressure Reducing Valve For Low Pressure Bypass - ZDT Model Automatic recirculation control valve – Convista
China Cheap price Temperature And Pressure Reducing Valve For Low Pressure Bypass - ZDT Model Automatic recirculation control valve – Convista Detail:
ZDT series Automstic recirculation valve is a kind of pump protection device. It automatic protect centrifugal pump when pump body occur cavitation damage or unstable (especially conveying hot water at low load operation). Once pump flow is lower than the preseted flow, bypass can completely open to ensure the minimum required flow pump. Even running fully closed, namely main flow is zero, the minimum flow can also discharge from the bypass.
ZDT series has big bypass, and this valve is suitable for bypass with big flow, maximum pressure differential is 4MPa, specific choice is determined by factory.
• Simple structure, operation reliable and stable, with few movement parts.
• Be easy for installation, can be installed vertically or horizontally on pump outlet.
• Bypass flow is large, maximum flow is 60% of main flow, KV valve can be adjusted.
• Maximum bypass operating pressure differential is 4MPa. Bypass non-return function is optional.
• Applicable medium including: water, oil, methanol and other liquid medium.
• Working temperature: -196℃ to +130℃.
Valve body type: three-way casting valve
Nominal diameter: NPS1″-16″ (DN25, 32, 40, 50, 65, 80, 100, 200, 250, 300, 350, 400)
Nominal pressure: CL150#-400# (PN16, 25, 40, 64)
End connection type: Flange FF, RF, RTJ, BW, SW, etc.
According to the difference of inductive main flow, main valve disc check cone of automatic recirculation valve will automatically move to a certain position. At the same time the main valve disc drive bypass valve stem, transfer the movement of main valve disc to bypass, through control bypass valve disc position, change bypass throttling area, so as to control bypass flow. When main valve disc back into valve seat closed, all flow backflow through bypass. When main valve disc to rise to top position, bypass is fully closed, all the flow of pump flow to process system. This valve set four functions in one body.
• Flow perception: Automatic recircution valve main valve disc can automatically perceive main flow of process system, thereby according to the flow to determine position of main valve disc and bypass disc.
• Recirculation control: Automatic recirculation valve can inhaled pump normal operation required minimum flow into storage device through bypass, so as to adjust pump H-Q charateristics, to realize recycling.
• Check valve: Automatic recirculation valve also has check valve effect, preventing the liquid backflow to pump body. Bypass non-return function is optional.
• Special bypass size can be customized. The max flow rate of bypass is subject to the max Kv value.
No | Name | Material | No | Name | Material | ||
1 | Body | WCB | CF8 | 11 | O ring | EPDM | EPDM |
2 | Recycle disc | 2Cr13 | 304 | 12 | Stud bolt | 45 | 0Cr18Ni9 |
3 | Recycle seat | 2Cr13 | 304 | 13 | Hex nut | 35 | 0Cr18Ni9 |
4 | Screw gland | 2Cr13 | 304 | 14 | Bonnet | WCB | CF8 |
5 | O ring | EPDM | EPDM | 15 | Guide block | 2Cr13 | 304 |
6 | Main disc | 2Cr13+STL | 304+STL | 16 | Bushing | 2Cr13 | 304 |
7 | O ring | EPDM | EPDM | 17 | Porous set | 2Cr13 | 304 |
8 | Gasket | 2Cr13 | 304 | 18 | End ring | 2Cr13 | 304 |
9 | Hexage nut | 304 | 304 | 19 | Spring 2 | 60Si2Mn | 1Cr18Ni9Ti |
10 | Spring | 60Si2Mn | 1Cr18Ni |
Product detail pictures:
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We can constantly satisfy our respected customers with our good high quality, good price tag and good support due to we have been additional specialist and extra hard-working and do it in cost-effective way for China Cheap price Temperature And Pressure Reducing Valve For Low Pressure Bypass - ZDT Model Automatic recirculation control valve – Convista, The product will supply to all over the world, such as: Liverpool, venezuela, Lisbon, With excellent solutions, high quality service and sincere attitude of service, we ensure customer satisfaction and help customers create value for mutual benefit and create a win-win situation. Welcome customers all over the world to contact us or visit our company. We'll satisfy you with our qualified service!
By Hulda from Denmark - 2017.12.19 11:10
The quality of the products is very good, especially in the details, can be seen that the company work actively to satisfy customer's interest, a nice supplier.
By Candy from Costa Rica - 2017.11.01 17:04