Product Description:
Core Material Properties
The material of the pulse valve diaphragm is crucial for its performance. Dahe pulse valve diaphragms primarily use elastomer materials. The common types and their characteristics are as follows:
Nitrile Butadiene Rubber (NBR):
- Advantages: Good oil resistance, suitable for conditions with oil mist; moderate elasticity and cost-effective.
- Limitations: General temperature resistance (-20℃ to 120℃), weak ozone aging resistance.
Fluoroelastomer (FKM):
- Advantages: Excellent temperature resistance (-20℃ to above 200℃), strong chemical corrosion resistance, ozone and aging resistance.
- Limitations: Higher cost, slightly lower elasticity compared to nitrile rubber.
Ethylene Propylene Diene Monomer (EPDM):
- Advantages: Good weather and ozone resistance, resistant to water vapor and weak acid corrosion, with a wide temperature range (-40℃ to 150℃).
- Limitations: Poor oil resistance, not suitable for oil-containing environments.
Some high-end models may use composite materials (e.g., rubber combined with fabric skeleton) to enhance tear resistance and strength.
Physical and Mechanical Properties
Elasticity and Resilience: The diaphragm must have high elasticity for tight sealing and resilience for long-term use.
Tensile Strength and Tear Strength: Insufficient tensile strength can lead to rupture; tear strength prevents further damage, extending the service life.
Hardness: Materials with Shore hardness of 60~80A are usually used to balance sealing quality and elasticity.
Temperature Resistance: Different materials are chosen based on working temperature; e.g., fluororubber for high-temperature and nitrile rubber for normal temperature conditions.
Working Characteristics
Sealing Performance: Precise processing of the diaphragm and valve seat ensures complete sealing, preventing air leakage and maintaining dust removal efficiency.
Response Speed: The diaphragm needs to open and close quickly in milliseconds to ensure efficient ash cleaning.
Medium Resistance: It must resist moisture, oil stains, and dust to maintain wear and chemical erosion resistance.
Technical Parameters:
| Technical Parameter | Description |
| Brand | TAEHA |
| Conventional nitrile rubber (NBR) | -20 ℃~80 ℃, Suitable For Room Temperature Drying Conditions |
| Diaphragm Material | NBR |
| Color | Red Green Black |
| Working pressure range | 0.4-0.7MPa |
| Fluororubber (FKM) | -20 ℃~200 ℃ (some Models Can Reach 260 ℃), Suitable For High Temperature And Corrosive Environments (such As Chemical And Waste Incineration) |
Applications:
Working Condition Adaptation: The material is selected according to the temperature of the dust removal system, medium (oil-containing, corrosive gas, etc.), and pulse pressure (usually 0.2~0.6MPa). For example:
Corrosive environments such as waste incineration plants and chemical workshops → fluororubber diaphragms;
Normal temperature and non-corrosive environments such as wood processing and grain processing → nitrile rubber diaphragms.
Service Life
Under normal working conditions, the service life of high-quality diaphragms can reach 100,000~300,000 pulse cycles (about 1~3 years), which depends on the material, working temperature, pulse frequency and maintenance conditions. Improper maintenance (such as a large amount of moisture in compressed air leading to accelerated aging of the diaphragm) will significantly shorten its service life.
In conclusion, the core properties of Dahe pulse valve diaphragm can be summarized as " high elasticity, strong sealing, fatigue resistance and strong adaptability ". Its performance is directly related to the stable operation of the pulse valve and even the entire dust removal system. When selecting, the material, size and mechanical properties should be comprehensively considered in combination with the actual working conditions.
Packing and Shipping:
Product Name: Pulse Valve Diaphragm
Description: High-quality diaphragm for pulse valves, designed for efficient and reliable operation.
Package Contents: One Pulse Valve Diaphragm
Package Material: Protective cardboard box
Shipping Method: Standard Shipping
Shipping Time: Estimated delivery in 3-5 business days
