Dongguan Xinshengji Hardware Products Co., Ltd
| Material | Food-grade PP/PE housing + Silicone diaphragm |
| Supply Ability | 6000000 |
| Compatibility | Single-layer PE / Multi-layer PE/PA / Aluminum foil composite |
| Payment Terms | T/T,L/C,D/A,D/P, |
| Diaphragm Cycle Life | 1,000,000+ open-close cycles |
| Manufacturing Process | Eco injection molding — zero harmful additives |
| Packaging Details | 57*37*42cm |
| Diaphragm Material | High-performance silicone |
| Customization | Available upon request (colors, dimensions, logo branding) |
| Delivery Time | 5-7 days |
| Application Method | Heat-sealing |
| Product Type | One-Way Degassing Valve / Exhaust Valve |
| Pouch Compatibility | PE / PE-PA / PE-Aluminum Foil |
| Capacity | 10,000,000 Pcs / Week |
| Model Number | A2 |
| Place of Origin | Guangdong |
| Brand Name | XSJ |
View Detail Information
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Product Specification
| Material | Food-grade PP/PE housing + Silicone diaphragm | Supply Ability | 6000000 |
| Compatibility | Single-layer PE / Multi-layer PE/PA / Aluminum foil composite | Payment Terms | T/T,L/C,D/A,D/P, |
| Diaphragm Cycle Life | 1,000,000+ open-close cycles | Manufacturing Process | Eco injection molding — zero harmful additives |
| Packaging Details | 57*37*42cm | Diaphragm Material | High-performance silicone |
| Customization | Available upon request (colors, dimensions, logo branding) | Delivery Time | 5-7 days |
| Application Method | Heat-sealing | Product Type | One-Way Degassing Valve / Exhaust Valve |
| Pouch Compatibility | PE / PE-PA / PE-Aluminum Foil | Capacity | 10,000,000 Pcs / Week |
| Model Number | A2 | Place of Origin | Guangdong |
| Brand Name | XSJ | ||
| High Light | Food Grade Silicone Coffee Degassing Valve ，Zero Additives Coffee Packaging Valve ，Food Grade Coffee Packaging Valve | ||
PRODUCT INFORMATIONS
| Parameter | Value / Range |
|---|---|
| Material | Food‑grade PP/PE housing + silicone diaphragm |
| Opening pressure | 2.0 – 3.0 mbar (customisable 0.5–3.0 kPa) |
| Sealing temperature | 163 – 168 °C |
| Dimensions | Ø20–23 mm × H 3–6 mm (±0.1 mm) |
| Weight | 0.55 – 0.85 g (±0.02 g) |
| Cycle life | ≥ 1,000,000 cycles |
| MOQ | 100,000pcs |
| Filter option | Available (for ground coffee) |
The one-way degassing valve operates on a simple differential pressure principle:
Degassing Phase: Freshly roasted coffee releases CO₂ as a byproduct of post-roast chemical reactions. As internal bag pressure builds and exceeds the calibrated opening threshold (typically 2-3 mbar), the pressure forces the silicone diaphragm to lift.
Gas Release: CO₂ and other volatile gases escape through the valve to the outside atmosphere while the filter (where equipped) prevents coffee particles from clogging the mechanism.
Automatic Sealing: Once internal pressure drops below the closing threshold, the silicone diaphragm returns to its sealed position, instantly blocking external oxygen, moisture, and contaminants from entering the bag.
One-Way Protection: The valve opens exclusively when internal pressure exceeds external pressure—ensuring that outside air never enters the package.
| Segment | Benefit |
|---|---|
| Roasted whole beans | Controlled CO₂ release, no bloating |
| Ground coffee | Rapid degassing with optional particle filter |
| Specialty / single‑origin | Aroma retention, extended shelf life |
| Nuts, spices, pet food | Oxidation and rancidity prevention |
Dongguan Xinshengji Hardware Products Co., Ltd
Founded in 2007 and has extensive industry experience.
A packaging enterprise that integrates the development of plastic and hardware products, mold manufacturing, and injection molding.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Year Established:
2007
Total Annual:
>5
Employee Number:
>30
Ecer Certification：
Verified Supplier
Dongguan Xinshengji Hardware Products CO.,Ltd Established back in 2007, our factory is a professional integrated plastic packaging supplier with 12 years of industry dedication. We boast a complete industrial system covering independent plastic product development, custo... Dongguan Xinshengji Hardware Products CO.,Ltd Established back in 2007, our factory is a professional integrated plastic packaging supplier with 12 years of industry dedication. We boast a complete industrial system covering independent plastic product development, custo...
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