ZDM Series Automatic Recycle Valve Made in China

ZDM Series Automatic Recycle Valve Made in China


Negotiable Min Order Quantity Unit

Required Quantity
Place of Origin
China
Payment Terms
Negotiable
Production method
Negotiable
Shipping / Lead Time
Negotiable / Negotiable
Keyword
automatic recycle valve
Category
Valves

Dalian Zesheng Equipment Co.,Ltd

Membership
PRO
Country / Year Established
China China / 2016
Business type
Trading Company
Verified Certificate

7

Product name ZDM Series Automatic Recycle Valve Made in China Certification -
Category Valves Ingredients -
Keyword automatic recycle valve Unit Size -
Brand name - Unit Weigh -
origin China Stock -
Supply type - HS code -

Product Information

 

INTRODUCTION

ZDM Series Automatic Recycle Valve (ARC 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 medium). 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 running flow is zero, the minimum flow can also pass bypass for Automatic Recycle. Pressure reduced through the multistage bypass pressure reducing valve.
ZDM series Automatic Recycle Valve is suitable for bypass with high pressure differential, maximum pressure differential is 30MPa, and specific choice is determined by factory. Multistage decompression type M type bypass can eliminate noise made by high-speed flow medium, prevent damage of cavitation erosion and braising to valve components.

CHARACTERISTIC

  • Prevent cavitation multistage decompression bypass, reducing velocity, suitable for high pressure conditions
  • Forgde valve body, or you can choose carbon steel or stainless steel material, etc.
  • Standard bypass non-return function, maximum working pressure differential is 30MPa.
  • Pressure grade from PN16 to PN420, diameter from DN2to DN500.
  • Can select manual bypass operation function, used in fault.

SIZE AND PRESSURE RANGE

  • Body type: Three-way forged valve
  • Nominal diameter: DN25, 32, 40, 50, 65, 80,100, 200, 250, 300, 350, 400, 450, 500
  • Nominal pressure: PN 16,25,40,64,100,160,250,420 CLASS 150, 300, 600, 900, 1500, 2500LB
  • End connection: Flange, FF, RF, RTJ, BW, SW etc.

MATERIAL TEMPERATURE RANGE

Body Material
Sealing Materuial
A105LF2F304F316
NBR-20~+100-30~+100-30~+100-30~+100
FKM-20~+200-40~+200-40~+200-40~+200
PTFE-20~+230-40~+230-80~+230-80~+230
Stainless steel gasket-20~+300-40~+300-196~+300-196~+300

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 mian 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 recirculation valve main valve disc can automatically perceive main flow of process system, thereby according to the flow to determine position of mian 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 characteristics, to realize recycling.
  • Bypass multistage pressure reducing: bypass control system can reduced the backflow medium from high-pressure pump outlet to appropriate backflow to low-pressure storage device with low noise small wear.
  • Check: automatic recirculation valve also has check valve effect, preventing the liquid backflow to pump body. Bypass non return function is standard.
  • Special bypass size can be customized. The max flow rate of bypass is subject to the max Kv value.

SIZE

Valve SizeMm253240506580100125150200250300
 in111/411/2221/2345681012
Max main flowm3/h1228305010011420040045575012501650
Bypass sizemm15202025404050506580100125
 in1/23/43/4111/211/22221/2345
Max bypass KvCv1.01.91.92.75.25.28.58.511142235

Note: Valve mian ouelet size depends on the outlet size of pump.

MODEL SELECTION

ZDMNominal PressureBody MaterialNominal Diameter/Bypass DiameterStructure Type
Automatic Recycle pump protection valveM type bypass assemblyPN16=PN16
Class 150LB
=CL150
C=A105
LC=LF2
P=304
PL=304L
R=316
RL=316L
D=Customrized material
DN50=50
NPS2”=2”
DN25=25 NPS1”=1”V = vertically mounted
H = horizontally mounted
S = Manual startup
Such as: M automatic recirculation valve, PN40,body material is WCB,main diameter DN50 bypass diameter DN25,(vertically mounted, Model: ZDM-PN40-C-50/25-V

NOTE

Other bypass size can be made according to client’s requirements, maximum bypass flow depends on maximum Kv value.

INSTALLATION

automatic recirculation valve should be installed nearby the centrifugal pump need Protect as soon as possible, and be better to install the outlet of pump.
Distance between pump outlet and inlet should not exceed 1.5 meters, in order to preventing from liquid pulsing cause low-frequency water attack. Medium flows from top to bottom. Priority should be installed vertically, also can be installed horizontally.

MAINTENANCE

Maintenance and installation according manual provided, inspect the pump weekly in routine, and at the same time inspect valve functions.

MAIN PARTS AND DIMENSION


NONameMaterialNONameMaterial
1BodyA105F30416Disc setting2Cr13304
2DiscEPDMEPDM17O ringEPDMEPDM
3Guide ring2Cr1330418O ringEPDMEPDM
4Valve plunger2Cr1330419Elastic cylindrical pin2Cr13304
5Spring60Si2Mn1Cr18Ni9Ti20O ringEPDMEPDM
6O ringEPDMEPDM21O ringEPDMEPDM
7Guide block2Cr1330422Recycle bodyA105F304
8BonnetA105F30423Recycle cage2Cr13304
9Nut350Cr18Ni924Recycle disc2Cr13304
10Stud450Cr18Ni925O ringEPDMEPDM
11Plunger pin2Cr1330426Orifice plate2Cr13304
12Disc block2Cr1330427O ringEPDMEPDM
13O ringEPDMEPDM28Nut350Cr18Ni9
14Bonnet2Cr1330429Bolt450Cr18Ni9
15Nut0Cr18Ni90Cr18Ni9    

DIMENSION AND WEIGHT

DN(IN)PN(Bar)CLASSDNB(IN)L(Mm)S(Mm)H(Mm)Kg)
25
(1″)
10-16-25-40150-300LB25
(1″)
1901537317
63-100600 LB2501829032
32
(1″)
10-16-25-40150-300LB25
(1″)
1901537319
63-100600 LB2501829032
40
(11/2″)
10-16-25-40150-300LB25
(1″)
2001557519
63-100-160600-900 LB2601909032
2501500LB30021512043
50
(2″)
10-16-25-40150-300LB25
(1″)
2301639027
63-100-160600-900 LB30018511541
2501500LB35022313059
65
(21/2″)
10-16-25-40150-300LB40
(11/2″)
29018411042
63600 LB34021912560
100-160900 LB34022712569
2501500LB40026014589
80
(3″)
10-16-25-40150-300LB40
(11/2″)
31019111552
63600 LB38023314074
100-160900 LB38024014084
2501500LB450265165122
100
(4″)
10-16-25-40150-300LB50
(2″)
35022112581
63600 LB430258155112
100-160900 LB430266155126
2501500LB520300190106
125
(5″)
10-16-25-40150-300LB50
(2″)
400266135122
63600 LB500280175182
100-160900 LB500291175207
2501500LB600321215200
150
(6″)
10-16-25-40150-300LB65
(21/2″)
480295165138
63600 LB550350190273
100-160900 LB585355200289
2501500LB700405250444
200
(8″)
10-16-25-40150-300LB80
(3″)
600395200241
63600 LB650405215467
100-160900 LB680430225501
2501500LB830485290785
250
(10″)
10-16-25-40150-300LB100
(4″)
730475240411
63600 LB775520260714
100-160900 LB800560270857
2501500LB9005603101284
300
(12″)
10-16-25-40150-300LB125
(5″)
850530280740
63600 LB900550300930
100-160900 LB10506503601485
2501500LB12007204202100

 

B2B Trade

Price (FOB) Negotiable transportation -
MOQ Negotiable Leadtime Negotiable
Payment Options Negotiable Shipping time Negotiable

Dalian Zesheng Equipment Co.,Ltd

Country / Year Established
China China / 2016
Membership
PRO
Business type
Trading Company

7

President
Jack Zhu
Address
Hongtai Building,Xixian Road
Product Category
Pumps
Year Established
2016
No. of Total Employees
51-100
Company introduction

 

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