Motorized Valve
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- Voltage/Current/Speed of opening(closing)
- Bore size/Liquid/Pressure/Temperature/Cv
- Wire Diagram/NC/NO
- Difference between CR05,CR501,CR502
- Check and repair Actuator
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Solenoid Valve |
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- I didn't see +/- labeled on the terminals. Does it matter which way it is hooked up?
- Is this food safe product ? Can it be used with hot drinking water?
- Does this unit get hot if it is energized for long periods of time thus increasing the water temperature flowing through it?
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Vacuum Chamber |
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- I have installed and used this vacuum chamber in accordance with the instructions, but the vacuum only reached -25inHg. And after 20minutes, it was left with -20inHg, what should I do?
- I need the vacuum of -29inHg, why does the pressure gauge show only max -14?
- Were you able to pull a full 29inHg of vacuum? I could only get 27inHg.
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Vacuum Pump |
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- My vacuum pump is very hot. After continuous use for an hour, it suddenly stopped working, what should I do?
- I've been using the pump for three months, and there's a lot of oil mist coming out of the oil cap lately, is that normal?
- Were you able to pull a full 29inHg of vacuum? I could only get 27inHg.
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Heat Pad |
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- The temperature does not rise at all or rise to a value but could not rise any further.
- The temperature rise very slowly or rise for a while and then drop.
- The temperature can only rise (cannot be refrigerated), the temperature is too high, can I control it?
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Circulation Pump |
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- In the following two situations: a) The water heater does not have a return pipe; b) The water heater has a return pipe. Which pump should I choose to use? In what type of situation can I use a flow switch and a timer?
- How to use it in an underfloor heating system?
- What is lowest the power usage can be?
- What's the relationship between ⅠⅡⅢ and automatic & manual ?
- What's special about the new products?
- The difference between circulating pumps available in the market place.
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On Demand Pump |
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- What are the inlet and outlet fittings?
- Is the pump very noisy?
- Is it a self-priming pump?
- What is the maximum temperature of liquid this pump can run?
- Can the pump run dry?
- I can't shut off my pump automatically. Why won't the pressure switch work?
- The motor is running, but no self-priming?
- Pumps start and stop frequently?
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Water Filtration |
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- Will TDS of UF/RO waters change?
- The water purifier discharges black water, can it be drunk?
- When using two weeks,the bottom of housing shattered. Why?And where can I buy the clear filter housing?
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