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
Advantage Of our company
1. Excellent technology:
the technology is in the leading level in China, cooperate with the most famous
universities in China;
2. Advanced equipment:
advanced processing equipment and testing means, providing the integration of automation system solutions for product, engineering, service and training.
3. Strong team:
have many senior engineers with plenty of research, development, design
experience, providing professional service for sales and after sales.
4. Good quality:
reliable and stable quality, good performance, long life time.
5. Full series of products:
covers full category of valves, meet the general standard of every country in the world, such as GB, DIN, ASTM, BS, JIS.
6. Professional after sales service:
have the professional engineer team to provide the service.
passed the ISO9001 certificate as well as CE,ISOetc.
8. Fast delivery time:
have the stock, fast delivery time could be guarantee.
packing strictly as per the exporting standard or as per the customized request.
10. Long-term quality warranty time:
provide 12 months quality warranty time.
For your company to order valve products in our company, our factory makes the following commitments in terms of after-sales service:
1. Our company implements warranty on product quality;
2. After the contract is signed, guarantee the quality and quantity, and deliver on time;
3. The company ensures that the valve products provided meet the contract targets
4. For technical consultation of the demand side, give answers at any time;
5. When delivering the equipment, the factory delivers the following materials to the purchaser: delivery list, product certificate, product sample, product instruction manual, technical information;
After receiving a letter or a phone call from the user regarding quality issues, we guarantee a response within 24 hours to resolve the issue as quickly as possible
Classification Of Valves
1. The valve can be divided into two categories:
The first type of automatic valve: a valve that relies on the ability of the medium (liquid, gas) to act on its own.
Such as check valves, safety valves, regulating valves, traps, pressure reducing valves, etc.
The second type of drive valve: a valve that is operated manually, electrically, hydraulically, and pneumatically.
Such as gate valve, globe valve, throttle valve, butterfly valve, ball valve, plug valve, etc.
2. According to structural features, according to the direction of movement of the closing member relative to the valve seat, it can be divided into:
a. Sectional door shape: the closing piece moves along the center of the valve seat;
b. Gate shape: The closing piece moves along the center of the vertical valve seat;
c. Cock and ball: The closing part is a plunger or ball, which rotates around its centerline;
d. Swing shape: the closing piece rotates around the axis outside the valve seat;
e. Dish shape: the disc of the closing part, which rotates around the axis in the valve seat;
f. Slide valve shape: The closing piece slides in the direction perpendicular to the channel.
3. According to the purpose, according to the different purposes of the valve can be divided into:
a. For breaking: used to connect or cut off pipeline media, such as globe valves, gate valves, ball valves, butterfly valves, etc.
b. Check use: used to prevent the medium from flowing back, such as a check valve.
c. For regulation: used to regulate the pressure and flow of the medium, such as regulating valves and pressure reducing valves.
d. Distribution: used to change the flow direction of the medium and distribute the medium, such as three-way cock, distribution valve, slide valve, etc.
e. Safety valve: When the pressure of the medium exceeds the specified value, it is used to discharge excess medium to ensure the safety of the pipeline system and equipment, such as safety valves and emergency valves.
f. Other special purposes: such as traps, vent valves, drain valves, etc.