Zhejiang Jigong Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of soft-sealed balls in China. If you're going to wholesale cheap soft-sealed balls made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
Basic Introduction
Soft-sealed valve balls form a sealing surface by coating or inlaying elastic sealing materials such as PTFE, RPTFE, NBR, and PEEK on the surface of the ball. They rely on the deformation of elastic materials to compensate for machining errors and medium pressure, and possess excellent zero-leakage sealing performance and low operating torque characteristics. Their elastic sealing structure can effectively buffer the impact of the medium, has a certain tolerance for tiny particulate impurities, is suitable for the transportation of clean fluids and weakly corrosive media, as well as on-off conditions requiring zero leakage, and is a commonly used valve ball component for switch control in water supply and drainage, HVAC, food and medicine, and general industrial pipelines.
Product Specification
|
Indicator Item |
Technical Parameters |
|
Size Range |
1/2" to 56" |
|
Pressure Rating |
PN16-PN420(Class150-4500) |
|
Sphere Material |
Carbon steel A105N/LF2, austenitic stainless steel 304/316, alloy steel, Hastelloy, Monel alloy, etc. |
|
Sealing surface material |
Stellite, tungsten carbide (WC), chromium carbide (CrC), Inconel, etc. |
|
Coaxiality |
≤0.05mm |
|
Roundness accuracy |
≤0.02mm |
|
Surface hardness |
HRC 55+ (Metal Matrix) |
|
Surface Roughness |
Ra ≤ 0.4 μm (sealing surface) |
|
Outer diameter tolerance |
1/2" – 4": +0.03 mm6" – 12": +0.05 mm |
|
Inner diameter tolerance |
1/2" – 4": 0~+0.03 mm6" – 12": 0~+0.05 mm |
|
Applicable Temperature |
-196°C to 1200°C (depending on the material of the sealing surface) |
Product Features
- Excellent sealing performance, capable of achieving zero leakage sealing
- Lower operating torque, easier and more labor-saving opening and closing
- Elastic sealing structure can effectively buffer the impact of the medium
- Has a certain tolerance for tiny particulate impurities in the pipeline
- By relying on the deformation of elastic materials, machining and assembly errors can be compensated for
- Compatible with a variety of elastic sealing materials to meet different media operating conditions
Product Application Scope / Usage Scenarios
Applicable Media:
Clean Fluids, Weakly Corrosive Media
Applicable Working Conditions:
On-off control scenarios requiring zero leakage
Application Area:
Water supply and drainage systems, HVAC pipes, food and pharmaceutical industries, general industrial pipeline switch control
FAQ
What are the commonly used sealing materials for soft-sealed valve balls?
Commonly used elastic sealing materials include PTFE, RPTFE, NBR, PEEK, etc.
What is the most core advantage of the soft-sealed valve ball?
The core advantage is zero-leakage sealing performance, while also featuring low operating torque.
Can soft-sealed valve balls be used in media with particulate impurities?
It has a certain tolerance for fine particulate impurities, but is not recommended for use in media containing a large amount of hard particles.
In which industries are soft-sealed valve balls mainly used?
Mainly used for on-off control of water supply and drainage, HVAC, food and pharmaceutical, and general industrial pipelines.
What is the sealing principle of the soft-sealed valve ball?
The deformation of the elastic sealing material compensates for machining errors, and in combination with the medium pressure, achieves reliable sealing.
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