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Low Pessure Arc Valve (YCAT)
Basic Info

Model No.:  YCAT

Product Description Model NO.: YCAT Temperature: Ordinary Temperature Valve Seat: Single-Seat Material: Stainless Steel Size: 1"-16" Suitable Medium: Water Transport Package: Plywood Case Origin: China Certification: SGS, ISO, CE Connection: Flange Structure: Automatic Recirculation Valve: Pressure Reducing Valve Pressure: 150lb-400lb Trademark: YI CHEN Specification: CE API ISO HS Code: 8481804090 Low Pessure Arc Valve (YCAT)
Low Pessure Arc Valve (YCAT)
Low Pessure Arc Valve (YCAT)
YI CHEN Automatic Recycle valve 
YCAT series Automatic Recycle 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.
YCAT 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 stabile, with few movement parts.
  Be easy for installation, can be installed vertically or horizontally on pump pressure outlet.
  Bypass flow is large, maximum flow is 60% of main flow, KV value 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 is from -196ºC to +300 ºC.
Diameter and pressure range
Valve body type:  three-way casting valve
Nominal diameter: DN25, 32, 40, 50, 65, 80, 100, 200, 250, 300, 350, 400
Nominal pressure: PN 16, 25, 40, 64, Class 150, 300 L, etc.
Connection type: flange FF, RF, RTJ, BW, SW etc .
Material temperature range
Body material
Sealing material
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
SS winding gasket -20~+300 -40~+300 -196~+300 -196~+300

Model NO.
YCA T Nominal pressure Body material Main
/Bypass diameter Structure type 
Auto recirculation Pump Protection Valve T type bypass assembly PN16=PN16
V=vertically mounted
H=Horizontally mounted
Z=Bypass non-return
D=With discharge mouth
Such as: T type Automatic Recycle valve, pressure is PN40, body material is WCB, main diameter DN50, Bypass diameter DN 25, vertically mounted, Model: YCAT-PN40-C-50/25-V
Working principle
According to the difference of inductive main flow, main valve disc check cone of Automatic Recycle 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 Recycle 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 Recycle 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 and small wear.
  Check: Automatic Recycle 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.
Valve size mm 25 32 40 50 65 80 100 125 150 200 250 300
in 1 11/4 11/2 2 21/2 3 4 5 6 8 10 12
Max main flow m3/h 12 28 30 50 100 114 200 400 455 750 1250 1650
Bypass size mm 15 20 20 25 40 40 50 80 80 100 100 150
in 1/2 3/4 3/4 1 11/2 11/2 2 3 3 4 4 6
Max bypass Kv Cv 2.3 4.6 4.6 6.9 18.5 18.5 34.7 69.3 69.3 116 116 170

Parts and material
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 Hexagon nut 304 304 19 Spring 2 60Si2Mn 1Cr18Ni9Ti
10 Spring 60Si2Mn 1Cr18Ni9Ti        

1.Q: What is your main market?
A: Our main market is North America, South America, Eastern Europe, Southeast Asia, Africa, Mid East, Eastern Asia, Western Europe.
2.Q: Are there products standard?
A: Our model is standard, if you have specific demand, pls tell us.
3.Q: Do you have interest to do our own design items?
 A: Absolutely! It's our pleasure.

Our Services
1)Our advantage:
 We are the manufacturer with almost 20 years experience on valves. Best price,quality and service, Also we can control the production status. Shanghai YI CHEN team with strong ability in designing and after sell service. Cooperation with Carrier has improved our quality to a new level.
2)Terms of payment: T/T, L/C, Western union.
3)Shipment: average 20-25days after receiving deposit.
4)Delivery:  Shanghai/Ningbo ,by sea or air.
5)Gurantee: One year since delivery.
6)Inspection: 100% testing for all the valves.
Welcome to choose SHANG HAI YI CHEN , we are always ready!

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Product Categories : Others valve > Automatic Recirculation Valve

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