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Factory Price For Plastic Water Hydraulic Control Valve - ZDT Model Automatic recirculation control valve – Convista

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Factory Price For Plastic Water Hydraulic Control Valve - ZDT Model Automatic recirculation control valve – Convista Detail:


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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.


Characteristics

• 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℃.


Diameter and pressure range

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.


Working principle

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.


Major parts material

ZDT model automatic recirculation control valve 1

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

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Factory Price For Plastic Water Hydraulic Control Valve - ZDT Model Automatic recirculation control valve – Convista detail pictures


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We usually perform being a tangible workforce making sure that we will give you the most beneficial excellent plus the finest selling price for Factory Price For Plastic Water Hydraulic Control Valve - ZDT Model Automatic recirculation control valve – Convista, The product will supply to all over the world, such as: Mombasa, Slovenia, Canberra, To let customers be more confident in us and get the most comfortable service, we run our company with honesty, sincerity and best quality . We firmly believe that it is our pleasure to help customers to run their business more successfully, and that our professional advice and service can lead to more suitable choice for the customers.
  • This company has the idea of "better quality, lower processing costs, prices are more reasonable", so they have competitive product quality and price, that's the main reason we chose to cooperate.
    5 Stars By Edith from Rome - 2017.04.08 14:55
    The supplier abide the theory of "quality the basic, trust the first and management the advanced" so that they can ensure a reliable product quality and stable customers.
    5 Stars By Aurora from Philippines - 2018.05.13 17:00

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