Q. Are there any special requirements for OEM purchases?
A. Yes. Liangchuan requires proof of trademark registration in
order to print or emboss your trademark onto the product or
packaging.
Q. Do Liangchuan products come with a warranty ?
A. Yes. That's why we offer 3-year product life guarantee, and a
generous1 year warranty on all purchases that begins with the bill
of loading.
Q. How can I get some samples?
A. Usually we don’t offer free sample and express fee are required,
the sample cost can be deducted from your first large order.
Q. What's the MOQ of your products?
A. Our MOQ is one (1) piece/set.
Q. Are you a manufacturer with your own factory?
A. Yes, we are the manufacturer for more than 8 years
Little Tips For Socket Weld Globe Valve
WORKING PRINCIPLE
Actually depends on the transmission mode of the valve, generally
divided into the following three aspects:
1. Principle of pneumatic cryogenic valve: Inflate and deflate
through the cylinder of the valve head to control the movement of
the valve core driven by the transmission mechanism, and finally
achieve the purpose of controlling the flow area and controlling
the flow.
2. Principle of manual cryogenic valve: Generally, the movement of
the spool is controlled by the handwheel, so as to control the flow
area of the valve to control the flow.
3. The principle of the solenoid valve above the pneumatic valve:
In this case, the exhaust and inflation of the cylinder are
controlled by controlling the power on and off to control the
transmission mechanism, and finally achieve the purpose of
controlling the flow.
4 . After the pipeline construction is completed, all the valves on
the pipeline should be opened, and the residue in the pipeline
should be thoroughly and thoroughly kept to ensure that the
pipeline system is clean and free of debris.
5 . The installation system diagram with the oil-free requirements
should be degreased.
6 . Slowly open and close during use.
7 . If the precision parts such as the valve disc, valve seat and
valve stem are worn or damaged, it must be repaired and replaced in
time.
8 . For parts such as gaskets and sealing materials, replace them
with new ones each time.
