Shanghai Songjiang Jingning Shock Absorber Co.,Ltd.
| Payment Terms | Western Union,T/T,L/C,D/A,D/P,MoneyGram |
| Supply Ability | 10000 sets per week |
| Delivery Time | 5--15 working days |
| Packaging Details | carton or wooden |
| OEM/ODM | for 20 Year's Experience |
| Product name | Rubber Expansion Joint Standard High Pressure Resistant In Piping Customized |
| Keyword | Rubber Expansion Joint Standard |
| Material | EPDM,NBR,NR, CR, FKM |
| Size | DN50 |
| Flange Standard | PN10/16, Class150#, Class300#, JIS5K, JIS10K |
| Color | Black |
| Shape | Round |
| Material Of Flange | Q235, SS304, SS316, SS316L |
| Surface Treatment | Cold Galvanized |
| Nominal Diameter | 32mm - 1800mm |
| Warranty Time | 12 months |
| In Stock | 20000 |
| Businese Type | Rubber expansion joints manufacturer |
| Flange Material | Carbon steel, SS304, SS316 |
| Main Frame | Nylon Cord Fabric |
| Resistance | Corrosion and abrasion resistant |
| Working Temperature | -20℃~150℃ |
| Feature | Small Volume |
| Warranty | 12 months |
| Deflection Angle | 10° - 15° |
| Axial Displacement | 6-18 mm |
| Company Type | Factory |
| Head Code | Round |
| Product Drawings | Offer |
| Connection Type | Flanged |
| Oem | Yes |
| Power | Manual |
| Rubber Joint Material | EPDM,NBR,CR,PTFE,etc. |
| Customized Support | OEM, ODM |
| Operating Medium | Water, Oil, Air, Chemicals |
| Applicable Media | Air, Water, Oil, Weak Acid and Alkali |
| Standard | DIN/ANSI/JIS/BS |
| Installation Manual | offer |
| Application | Pipeline systems |
| Temperature Rating | 200°F |
| Standard Of Flange | ANSI, DIN, JIS, EN, etc |
| Brand Name | JINGNING |
| Model Number | RLJS |
| Certification | CE，ISO |
| Place of Origin | China |
View Detail Information
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Product Specification
| Payment Terms | Western Union,T/T,L/C,D/A,D/P,MoneyGram | Supply Ability | 10000 sets per week |
| Delivery Time | 5--15 working days | Packaging Details | carton or wooden |
| OEM/ODM | for 20 Year's Experience | Product name | Rubber Expansion Joint Standard High Pressure Resistant In Piping Customized |
| Keyword | Rubber Expansion Joint Standard | Material | EPDM,NBR,NR, CR, FKM |
| Size | DN50 | Flange Standard | PN10/16, Class150#, Class300#, JIS5K, JIS10K |
| Color | Black | Shape | Round |
| Material Of Flange | Q235, SS304, SS316, SS316L | Surface Treatment | Cold Galvanized |
| Nominal Diameter | 32mm - 1800mm | Warranty Time | 12 months |
| In Stock | 20000 | Businese Type | Rubber expansion joints manufacturer |
| Flange Material | Carbon steel, SS304, SS316 | Main Frame | Nylon Cord Fabric |
| Resistance | Corrosion and abrasion resistant | Working Temperature | -20℃~150℃ |
| Feature | Small Volume | Warranty | 12 months |
| Deflection Angle | 10° - 15° | Axial Displacement | 6-18 mm |
| Company Type | Factory | Head Code | Round |
| Product Drawings | Offer | Connection Type | Flanged |
| Oem | Yes | Power | Manual |
| Rubber Joint Material | EPDM,NBR,CR,PTFE,etc. | Customized Support | OEM, ODM |
| Operating Medium | Water, Oil, Air, Chemicals | Applicable Media | Air, Water, Oil, Weak Acid and Alkali |
| Standard | DIN/ANSI/JIS/BS | Installation Manual | offer |
| Application | Pipeline systems | Temperature Rating | 200°F |
| Standard Of Flange | ANSI, DIN, JIS, EN, etc | Brand Name | JINGNING |
| Model Number | RLJS | Certification | CE，ISO |
| Place of Origin | China | ||
| High Light | HVAC pump vibration isolator bellows ，flexible flange rubber joint ，commercial building piping noise reducer | ||
HVAC Pump Vibration Isolator Bellows: Flexible Flange Rubber Joint for Commercial Building Piping Noise Reduction
Product Description
In modern multi-story commercial buildings, high-rise hotels, and hospital facilities, structural noise is an absolute deal-breaker. Specially engineered to overcome the unique acoustic and spatial challenges of commercial HVAC installations and high-density pumping stations, this flexible flanged rubber joint serves as a definitive acoustic barrier. It is designed to halt disruptive mechanical hums, fluid-borne harmonics, and structural noise right at the source, preventing low-frequency vibration from bridging into the building's structural grid and compromising tenant comfort.
The core of this engineering solution lies in its high-damping, precision-vulcanized rubber compound, which is specifically calibrated to absorb and dissipate the high-frequency vibrations generated by spinning pump impellers and chilling units. By shearing these kinetic wave paths, it stops sound waves from echoing endlessly through the building's intricate riser networks and duct-adjacent pipe runs. Furthermore, its ultra-compact face-to-face layout turns it into an immediate drop-in solution for congested mechanical penthouses and tight basement equipment rooms where every inch of footprint matters. It delivers unyielding structural elasticity and fluid containment for environments where silent operational continuity is non-negotiable.
Performance characteristics
Elite Acoustic Decoupling & Hum Suppression : Formulated with a specialized high-damping elastomeric core that acts as a kinetic energy deadener. It targets and neutralizes high-frequency mechanical hums and structural acoustics before they can resonate through the building's concrete or piping infrastructure.
High-Frequency Impeller Vibration Absorption : Specifically calibrated to dampen the intense, rapid micro-vibrations generated by high-RPM commercial water pumps, chillers, and HVAC compressors, protecting downstream control valves and delicate inline sensors.
Ultra-Compact Space-Saving Layout : Engineered with a minimized face-to-face structural dimension, making it the ideal choice for tight retrofits, vertical mechanical risers, and densely packed equipment skids where standard long-bellows connectors simply cannot fit.
Multi-Directional Thermal Expansion Bridging : Effortlessly absorbs simultaneous axial compression, lateral shear, and angular deflection caused by the rapid temperature cycling of commercial heating and chilled water loops, preventing pipe warp and joint fatigue.
Product Specification
| Size | Length | Allowable Movements in Operation | ||||
| mm | inch | mm | Axial Compression mm | Axial Extension mm |
Transverse Movement mm |
Angular Deflection mm |
| 25 | 1 | 130/152 | 20 | 12 | 14 | 15° |
| 32 | 1 1/4 | 95/130/152 | 20 | 12 | 14 | 15° |
| 40 | 1 1/2 | 95/130/152 | 20 | 12 | 14 | 15° |
| 50 | 2 | 105/130/152 | 20 | 12 | 14 | 15° |
| 65 | 2 1/2 | 115/130/152 | 20 | 12 | 14 | 15° |
| 80 | 3 | 130/135/152 | 20 | 12 | 14 | 15° |
| 100 | 4 | 130/152 | 20 | 12 | 14 | 15° |
| 125 | 5 | 130/152/165 | 20 | 12 | 14 | 15° |
| 150 | 6 | 130/152/185 | 20 | 12 | 14 | 15° |
| 200 | 8 | 130/152/210 | 20 | 12 | 14 | 15° |
| 250 | 10 | 130/203/230 | 20 | 12 | 14 | 15° |
| 300 | 12 | 130/203/245 | 25 | 16 | 22 | 15° |
| 350 | 14 | 200/255 | 25 | 16 | 22 | 15° |
| 400 | 16 | 200/255 | 25 | 16 | 22 | 15° |
| 450 | 18 | 200/255 | 25 | 16 | 22 | 15° |
| 500 | 20 | 200/255 | 25 | 16 | 22 | 15° |
| 600 | 24 | 260 | 25 | 16 | 22 | 15° |
| 700 | 28 | 260 | 25 | 16 | 22 | 15° |
| 800 | 32 | 260 | 25 | 16 | 22 | 15° |
| 900 | 36 | 260 | 25 | 16 | 22 | 15° |
| 1000 | 40 | 260/300 | 25 | 16 | 24 | 15° |
| 1100 | 44 | 300 | 25 | 16 | 24 | 15° |
| 1200 | 48 | 300 | 25 | 16 | 24 | 15° |
|
Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering |
Product Details
Production Flow
|
1.Raw material Top level CR/EPDM/NBR rubber raw materials, No recycled rubber |
2.Plasticating and mixing Special Formulation for better Bending with Nylon,For Better Strength,Sealing |
3.Workblanks wraping Cooper plated steel wire reinforcement prevent pull off |
|
4.Vulcanizing Automatic vulcanization machine ensure vulcanization time and pressure |
5.Inspecting |
6. Packaging |
Application
Rubber Expansion Joint Standard are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.
Our Services
1.24-hour online
2.Free samples provided
3.Support customization
4.Provide drawings
5.Multiple payment styles to choose from
6.Factory inspection (material, specifications, quantity, pressure, packaging)
7.Long warranty period
8.Suitable packaging for transportation
Our Customer
Certificate
FAQ
Company Details
Business Type:
Manufacturer
Year Established:
2004
Total Annual:
30000000-50000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count... Jingning is a specialist company in expansion joints for pipe equipment. Since 2004 we stand for values which are typical of a family owned company: the spirit of innovation, reliability, continuity and flexibility in thought and action.We are a reliable supplier to our customers who count...
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