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| With or without cap | cap | Valve | Overall Height(mm) | Bonnet Diameter(mm) | Bezel Diameter(mm) | Spool Diameter(mm) | Snap/Thread(mm) | Bezel Thickness(mm) | Upper Soft Rubber Diameter(mm) | Lower Soft Rubber Rubber Diameter(mm) |
| / | / | √ | 27.55 | / | 25 | 14 | M18*2.5 | 2.5 | 19.9 | 19 |
Product Center
Contact Us
- Address: No.9, Jinda Road, Yancang Street, Dinghai District, Zhoushan City, Zhejiang Province
- Fax：0580-8807655
- Email：[email protected]
- Email：[email protected]
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Company profile
Started in China, Marketing in the World29 years of research spirit in the industry.
Established in 1993, Zhejiang Hongda Special Rubber Products Co., Ltd. is a professional China HD-313 Lead-acid battery safety valve Suppliers and Custom HD-313 Lead-acid battery safety valve Company. The company integrates scientific research, production and trade, pays attention to scientific and technological innovation, and strives to develop industrial battery safety valve products with high technology content and high quality performance. We has more than 50 industrial battery safety valves, safety caps, microporous materials, explosion-proof discs, etc. patented, among them, microporous materials were identified as national key new products. The company has drafted and formulated industry standards for lead-acid battery safety valves and national standards for rubber seals for power lithium batteries, and has passed a series of system certifications such as IS09001, IS014001, IS045001 and "Made in Zhejiang".
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29 +
Established in 1993
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15 0,000+
Average daily output
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200 +
Employees
Honor
Welcome to visit Hongda
Our company has won the "Zhejiang High-tech Enterprise", "Excellent Demonstration Enterprise of Emphasizing Quality and Integrity", "Zhejiang Science and Technology Small and Medium-sized Enterprise" and many other honors..
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High-tech Enterprise
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National Key New Product Certificate 2008
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2008 The Most Growth Potential Small and Medium Enterprises In Zhejiang Province
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2013 Innovative Demonstration Small and Medium Enterprises In Zhejiang Province
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Advanced Enterprise for Innovation and Development of Small, Medium and Micro Enterprises in Zhejiang Province
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Small and Medium-sized Enterprise with Specialization, Refinement, Characterization, Novelization In Zhoushan City
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Provincial SME Technology Center
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Top 10 Growing Small and Medium Enterprises
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Provincial High-tech Enterprise Research and Development Center
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Zhejiang Enterprise Standard "Leader" Certificate
News
What is new
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HD-110 Vent Cap with Cover for Lithium Battery: Provides precise air pressure regulation and efficient protection for lithium batteries
Lithium batteries will inevitably generate a certain amount of gas during the charging and discharging process, especially during high current discharge or battery aging, gas accum...
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From precision injection molding to automated testing: Advanced technology shapes new standards for battery sealing
Zhejiang Hongda Special Rubber Products Co., Ltd. uses precision injection molding technology to precisely control every detail during the production process through high-precision...
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Innovative sealing design helps battery safety: HD-24 large diameter waterproof lead-acid battery safety valve sets new industry standards
During the use of lead-acid batteries, especially in high temperature, high humidity and harsh environments, how to effectively prevent the leakage of internal gas and the infiltra...
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HD-20 23mm High Lead-Acid Battery Safety Vent Plug has an anti-corrosion and high-temperature resistant design
The electrolyte used in lead-acid batteries is usually sulfuric acid solution, which is highly corrosive and easy to corrode metal parts and rubber materials. Long-term contact may...
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Sealing design and material selection of HD-58 Waterproof Car Start-Stop Lead-Acid Battery Safety
ValveSealing is one of the core elements of the design of Zhejiang Hongda Special Rubber Products Co., Ltd.'s HD-58 safety valve, with a bezel diameter and bonnet diameter of 35mm ...
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Excellent quality achieves reliable performance: O-ring sealing technology advantages
As a key sealing component in mechanical equipment, the reliability of O-rings is directly related to the operating efficiency, stability and service life of the equipment. The lat...
CONTACT US
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ADDRESSNo.9, Jinda Road, Yancang Street, Dinghai District, Zhoushan City, Zhejiang Province
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Tel0580-8803626
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FAX0580-8807655
QUICK LINKS
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Copyright：Zhejiang Hongda Special Rubber Products Co., Ltd.
ICP record number: Zhejiang ICP No. 12033433
OEM /ODM HD-313 Lead-acid battery safety valve Company