OEM Supply Wafer Swing Check Valve - ZDT Model Automatic recirculation control valve – Convista
OEM Supply Wafer Swing Check Valve - 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:
Related Product Guide:
Responsible excellent and fantastic credit rating standing are our principles, which will help us at a top-ranking position. Adhering towards the tenet of "quality initial, buyer supreme" for OEM Supply Wafer Swing Check Valve - ZDT Model Automatic recirculation control valve – Convista, The product will supply to all over the world, such as: Angola, French, Nepal, Our items have national accreditation requirements for qualified, high quality goods, affordable value, was welcomed by people today all over the world. Our products will continue to enhance within the order and look forward to cooperation with you, Should really any of these products and solutions be of curiosity to you, be sure to letus know. We are likely to be content to offer you a quotation up on receipt of your detailed needs.
By Griselda from Thailand - 2018.12.25 12:43
It is really lucky to meet such a good supplier, this is our most satisfied cooperation, I think we will work again!
By tobin from Cologne - 2017.11.11 11:41