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[China]
Trade Verify
Address: Botou City, Cangzhou City, Hebei Province
Contact name:Li
Fengbao Valve Manufacturing Co., Ltd. |
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Verified Suppliers
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Silent Check Valve is mainly composed of valve body, valve seat, diversion, yan disc, bearing and spring so on main parts, its internal flow streamline design with low pressure loss.Valve open/close schedule is very short when the pump is going to stop, can be quickly shut down to prevent huge sound of water hammer, has the characteristics of silence shut off. This valve is mainly used for water supply and drainage, fire protection, hvac system can be installed in the pump export put to prevent backflow and water hammer the damage to the pump.
Selection principle of check valve:
The valve that opens or closes by itself by the flow and force of the medium to prevent the backflow of the medium is called a check valve. The check valve belongs to the automatic valve category, which is mainly used in the pipeline where the medium flows in one direction, and only allows the medium to flow in one direction to prevent accidents. A check valve is a valve that automatically prevents the backflow of fluid. The disc of the check valve opens under the action of fluid pressure, and the fluid flows from the inlet side to the outlet side. When the pressure on the inlet side is lower than that on the outlet side, the valve disc will automatically close under the action of fluid pressure difference, gravity and other factors to prevent the fluid from flowing back.
1. The check valve is generally suitable for clean media, and
should not be used for media containing solid particles and high
viscosity.
2. For low pressure check valves below DN50mm, butterfly check
valves, vertical lift check valves and diaphragm check valves
should be used; for medium and low pressure check valves with DN
greater than 200mm and less than 1200mm, non-wear spherical ones
should be used. Upper return valve; for low pressure check valves
with DN greater than 50mm and less than 2000mm, butterfly check
valves and diaphragm check valves should be selected.
3. Diaphragm check valve is suitable for pipelines that are prone
to water hammer. The diaphragm can well eliminate the water hammer
caused by the reverse flow of the medium, but it is generally used
in low-pressure and normal-temperature pipelines due to temperature
and pressure restrictions.
4. For pipelines that require less water hammer or no water hammer
when closed, slow-closing swing check valves and slow-closing
butterfly check valves should be used.
technical parameter
| Size | DIN3202-F6 | Flange dimension(EN 1092-2) PN10/PN16 | ||
| DN | L | D | K | n-d |
| DN40/1.5 | 180 | 150 | 110 | 4-0)19 |
| DN50/2 | 200 | 165 | 125 | 4-019 |
| DN65/2.5 | 240 | 185 | 145 | 4-0)19 |
| DN80/3 | 260 | 200 | 160 | 8-019 |
| DN100/4 | 300 | 220 | 180 | 8-0)19 |
| DN125/5 | 350 | 250 | 210 | 8-0)19 |
| DN150/6 | 400 | 285 | 240 | 8-(P23 |
| DN200/8 | 500 | 340 | 295/295 | 8-0)23/12-023 |
| DN250/10 | 600 | 405 | 350/355 | 12-0)23/12-0)28 |
| DN300/12 | 700 | 460 | 400/410 | 12-023/12-0)28 |
| DN400/16 | 900 | 580 | 515/525 | 16-028/16-031 |
| DN500/20 | 1100 | 715 | 620/650 | 20-028/20-034 |
Fengbao valve factory is an entity factory with professional
production experience and professional manufacturing technology.
The company adheres to the business philosophy of
"customer-oriented, quality-oriented, attentive service",
integrates all kinds of professional advantage resources, and
creates cost- effective products. The company has an excellent R
& D team, dedicated to creating trustworthy products. Seek new
development and create new brand.
The core team has gathered professionals with experience in product
R & D, production and operation. The company attaches great
importance to the growth of its employees while growing up, and has
long been committed to the cohesion and improvement of their sense
of responsibility, technical level and professional knowledge. The
company provides development opportunities and platforms for every
excellent employee, provides standardized system training and
promotion mechanism, and helps employees to improve and grow in
their own work field.
The company's products are mainly featured by appropriate price,
excellent quality and high cost performance. Company independent
research and development, production, unique production, to achieve
the first-class quality, and favored by the majority of customers!
| Q1. Can I have a sample order for valve? | A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable. |
| Q2. Do you have any MOQ limit for valve order? | A: Low MOQ, 1pc for sample checking is available |
| Q3. How do you ship the goods and how long does it take to arrive? | A: We usually ship by sea. It usually takes 30 days to arrive. Airline shipping also optional. |
| Q4. How to proceed an order for valve? | A: Firstly let us know your requirements or application. Secondly We quote according to your requirements or our suggestions.Thirdly customer confirms the samples and places deposit for formal order.Fourthly We arrange the production. |
| Q5: Are you products standard? | A: Our model is standard, if you have specific demand, pls tell us. |
| Q6: Do you have interest to do our own design items? | A: Absolutely! We have big interest. |
