Wholesale One Way Food grade silicone rubber Valve Rubber Duckbill Check Valves
Technical Specification
Duckbill valves are unique, one-piece, elastomeric components that act as backflow prevention devices or one-way valves or check valves. They have elastomeric lips in the shape of a duckbill which prevent backflow and allow forward flow. The main advantage of duckbill valves over other types of one-way valves is that duckbill valves are self contained i.e. the critical sealing function is an integral part of the one piece elastomeric component as opposed to valves where a sealing element has to engage with a smooth seat surface to form a seal. Therefore duckbill valves are easily incorporated and assembled into a wide variety of devices without the hassle or problems associated with the surface finish quality of mating seats and/or complex assembly processes
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| Material |
NBR, NR, EPDM, FVMQ,HNBR,LSR,CR,Silicon, PU,SBR,IIR |
| Size/Color |
Customized |
| Hardness |
20-90 Shore A |
| Processing Way |
Compression, injection, injection transfer, extrusion, silicone liquid injection |
| Certificates |
SGS, RoHS. Reach |
| Packing |
PE plastic bags then to the carton / as customized |
| Payment |
T/T, Paypal, Western Union,Payoneer |
| MOQ |
5000 PCS |
| Shipping Method |
SEA,AIR,DHL,UPS,FEDEX,TNT, etc. |
| Delivery Time |
7 days for prototype tooling & samples, 14 days for production mold, 14-28 days for MOQ |
Product Advantages
1.100% all rubber or silicone construction
2. According to the actual needs of customers, choose different materials to meet various high temperature requirements.
3. Environmental protection material.
4. Long service life. Low wear and tear.
5. No clogging, no sealing. Effectively prevent backflow of liquid and gas.
6. The opening pressure is small. Generally, the liquid or gas under the pressure of 1-5KPA can be opened immediately.
Product Lmage
Company Profile
Melon Rubber&Plastic is specializing in the manufacturing of precision rubber o ring and silicone o-ring and industrial rubber products over ten years experience; including rubber gaskets, rubber grommets& Bushings, rubber diaphragms, rubber section cups, one way check sealing valves, rubber stoppers, rubber plugs, rubber caps. We offers rubber molding services including: rubber compression molding, rubber transfer molding, and rubber injection molding enabling us to meet all of your product specifications depending upon our customer's requirement.
Pls let us know the size you need (ID*CS size/hardness/material/country/tolerance)?
Quotation could be finished in 24 hours.
There is more than 1000 sets different size O Ring tooling, good quality, quickly lead time.
Welcome OEM&ODM Order.
FAQ
Q 1. Which payment methods are available?
A: T/T remittance, cash, paypal, credit card.
B: 30% T/T deposit in advance, 70% balance after showing ready goods before shipment.
Q 2. What is the normal delivery time for product orders?
A: The average lead time is 2-4 weeks, if molds are involved, the time to produce molds is 10 days, and the average production time after sample approval is 3-5 weeks.
Q 3. What is your standard packaging?
A: All goods will be packed in cartons and loaded on pallets. Special packaging can be used when required.
Q 4: How do I choose raw materials for my application?
A: With many years of experience in handling a variety of materials, we can help you choose the material that best suits your needs, keeping material costs in mind.
A2: We have various rubber compounds approved by UL, FDA, KTW, ROHS and REACH.
Q 5: Do your rubber products have international standards?
A: Yes, we mainly use ASTM D2000 standard to define the quality of rubber material, with tolerance according to ISO3302, ISO2768, etc.
Q 6: Can you provide materials in different colors?
A: Yes, we can produce custom molded rubber and silicone rubber products in different colors, color codes are required when placing an order.
Q7: How long does it take to get a quotation reply after receiving the inquiry?
A: Provide quotation documents within 24 hours after receiving RFQ inquiry, and respond within 48 hours after receiving customer claims. We use the fastest speed to save more time for our customers.
(If you have any other questions, please ask our sales staff directly.)
Audited Supplier 
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