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Medium Pressure Automatic Recycle Valve (YCAL)
Basic Info

Model No.:  YCAL

Product Description Model NO.: YCAL Temperature: Ordinary Temperature Valve Seat: Single-Seat Material: Stainless Steel Size: 1"-20" Suitable Medium: Water Specification: CE API ISO HS Code: 8481804090 Certification: SGS, ISO, CE Connection: Flange Structure: Automatic Recirculation Valve: Arc Valve Pressure: 150lb-600lb Trademark: YI CHEN Origin: China Medium Pressure Automatic Recycle Valve (YCAL)
Medium Pressure Automatic Recycle Valve (YCAL)
Medium Pressure Automatic Recycle Valve (YCAL)
YI CHEN Automatic Recycle valve 
YCAL 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.
YCAL series is suitable for bypass with medium or low pressure differential, maximum pressure differential is 6MPa, and specific choice is determined by factory.
Unique L bypass can eliminated noise by made high-speed flow medium, and prevent cavitation.
  Multi-cage type bypass, low noise, suitable for medium and low pressure working conditions.
  Forged valve body, can choose carbon steel or stainless steel material, etc.
  Standard bypass non-return function, maximum working pressure differential is 6MPa.
  With venturi port main flow non-return structure, adapt to complicated conditions.
  Pressure grade from PN16 to PN100, diameter from DN2to DN500.
  Can select manual bypass operation function, used in fault.
Size and pressure range
Body type: Three-way forged body.
Nominal diameter: DN25, 32, 40, 50, 65, 80,100, 200, 250, 300, 350, 400, 450, 500.
Nominal pressure: PN 16, 25, 40, 64, 100 CLASS 150, 300, 600 LB.
End connection: Flange, FF, RF, RTJ, BW,SW etc.
Material applicable temperature
Body material
Sealing material
A105 LF2 F304 F316
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

YCA L Nominal pressure Body material Nominal diameter /Bypass diameter
Structure type
Automatic Recycle Pump Protection Valve L type bypass assembly PN16=PN16
D=Customed  material
DN25=25 NPS1"=1" V = Vertically mounted
H = Horizontally mounted
S = manual startup
Such as: L type Automatic Recycle valve, pressure is PN40, body material is WCB,Main diameterDN50, bypass diameter DN25, vertically mounted,Model: YCAL-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 small wear.
  Check: Automatic Recycle 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.
Other bypass size can be made according to requirements, maximum bypass flow depends on maximum 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 50 65 80 100 125
  in 1/2 3/4 3/4 1 11/2 11/2 2 2 21/2 3 4 5
Max bypass Kv Cv 1.6 2.9 2.9 3.7 6.8 6.8 12.3 12.3 21.7 31 51 86

Parts and materials
NO Name NO Name NO Name NO Name
1 Body 7 Stud bolt 13 O ring 19 Control head
2 Guide ring 8 Hex nut 14 Pin 1 20 Multi-hole
3 Main valve disc 9 Guide screw
Guide pin
15 Pin 2 21 Spring 2
4 Leverage 10 Bonnet 16 Double-head
stud B type
22 Slide Ring
5 Spring 1 11 Turn arm 17 Hex nut 23 Bypass valve
6 O ring 12 Control slide 18 Oring    

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!

Contact us if you need more details on Arc Valve. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Pump Protection Valve、Medium Pessure Arc Valve. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Others valve > Automatic Recirculation Valve

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