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Fengdn patented spring valve.

This valve is for high speed inflation and deflation
on inflatable boats or air beds.
This patented screw valve is in perfect fit
with our electric air pumps to help excellent performance
in reducing the inflation/deflation time.
This item is a great option as a part of the plastics inflatables,
such as boats, air mattresses.


1 sample questions
Q: We can send samples to test to confirm it?
A: The customer has to send samples when required , in principle, we can provide free , but need to pay the freight charges for the sample part in the follow-up single customer when we return sample fee .
2 . Inquiry questions
Q: The price of your pump is how much you can provide a model ? ?
A: Our formal offer on the pump, please consult our service personnel . For issues related to the headset cord-like and quotes , please contact the Division I business people .
3 dozen Xiang problems
Q: I need proof to confirm , does the process how to walk , how to calculate the cost ?
A: Customers need proof , just provide your company name address information to our business staff .3-5 days we can send the sample proofing fee depending on the circumstances , ranging from 100-500 yuan . In the follow-up single- proofing costs up to a certain number or amount, we will refund proofing costs.
4 . Orders questions
Q: What 's MOQ is how much the order to you ? ?
A: Yes, in principle, MOQ 3000pcs , but there is no hard and fast rules . MOQ as the case may be. When customers need to order . Before contacting a business or customer can talk communication, our relevant staff will provide you with enough help . You can also mail or fax orders came directly after we receive an order confirmation , will arrange the relevant work the first time.
5 delivery problem
Q: Under the order later, about how long can deliver ?
A: After we received the order , will check inventory levels, and production planning based on orders , for delivery in the shortest time to complete
6. Transport problems
Q: What time you can send samples to express what Sent ? ?
A: Under normal circumstances, we cooperate with the United Hao through courier for cord-like customers, noon cord-like , before 12:00 Sent : cord-like afternoon , before 21:00 Sent . Customers can require us your designated courier shipment .
7 service
Q: How do your products will provide after-sales service ?
A: Our each product in each sample are measured after a full-featured mobile phone shipments . What technology for customer orders or product quality problems can best contact us , we will provide professional technical support and perfect after-sales service .
8 Product Standard
Q: Your product is environmentally friendly , is in line with international standards ?
A: Our products are certified by CE and ROHS certification related website for reference, for which the body can consult the details of our business commissioner .
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To avoid hearing damage, make sure that the volume on your music player is turned down before connecting your headphones. After placing headphones in your ears, gradually turn up the volume until you reach a comfortable listening level.

 Noise levels are measured in decibels (dB), exposure to any noise at or above 85 dB can cause gradual hearing loss.

 Monitor your use; hearing loss is a function of loudness versus time. The louder it is, the less time you can be exposed to it. The softer it is, the more time you can listen to it. Refer to the chart* below.

 This decibel (dB) table compares some common sounds and shows how they rank in potential harm to hearing.

Sound Noise Level (dB) Effect
Whisper 30 Very quiet
Quiet Office 50-60 Comfortable hearing levels are under 60 dB
Vacuum Cleaner, Hair Dryer 70 Intrusive; interferes witd telephone conversations
Food Blender 85-90 85 dB is tde level at which hearing damage (8 hrs.) begins
Garbage Truck, Cement Mixer 100 No more tdan 15 minutes of unprotected exposure recommended for sounds between 90-100 dB
Power Saw, Drill/Jackhammer 110 Regular exposure to sound over 100 dB of more tdan 1 minute risks permanent hearing loss
Rock Concerts (varies) 110-140 Threshold of pain begins around 125dB


 Do not use headphones when it's unsafe to do so - while operating a vehicle, crossing streets, or during any activity or in an environment where your full attention to your surroundings is required.

 It's dangerous to drive while wearing headphones, and in many places, illegal because it decreases your chances of hearing life-saving sounds outside of your vehicle, such as another car's horn and emergency vehicle sirens.

 Please avoid wearing your headphones while driving.