Product Description:
I. Core Material Properties
The material of the pulse valve diaphragm is the key to determining
its performance. Dahe pulse valve diaphragms mostly use elastomer
materials. The common types and their characteristics are as
follows:
Nitrile Butadiene Rubber (NBR):
Advantages: Good oil resistance, suitable for working conditions with oil
mist; moderate elasticity and low cost.
Limitations: General temperature resistance (usually -20℃~120℃), weak ozone
aging resistance.
Fluoroelastomer (FKM):
Advantages: Excellent high and low temperature resistance (-20℃~above 200℃),
strong resistance to chemical corrosion, ozone and aging, suitable
for high-temperature and strong corrosive working conditions (such
as chemical industry, metallurgy industry).
Limitations: Higher cost, slightly lower elasticity than nitrile rubber.
Ethylene Propylene Diene Monomer (EPDM):
Advantages: Good weather resistance and ozone resistance, resistant to water
vapor and weak acid corrosion, and applicable to a wide temperature
range (-40℃~150℃).
Limitations: Poor oil resistance, not suitable for oil-containing environments.
Some high-end models will use composite materials (such as rubber
combined with fabric skeleton) to enhance tear resistance and
strength.
II. Physical and Mechanical Properties
Elasticity and Resilience:
The diaphragm needs to open and close quickly under the impact of
high-frequency (several to dozens of times per minute) pulse
airflow. Therefore, it must have high elasticity to ensure that the
sealing surface fits tightly without leakage; resilience ensures
that it is not easy to deform after long-term use.
Tensile Strength and Tear Strength:
During operation, the diaphragm will be subjected to tensile force
generated by air pressure. Insufficient tensile strength can easily
lead to rupture; tear strength prevents further expansion of edges
or tiny damaged areas, extending the service life.
III. Working Characteristics
Sealing Performance:
The fitting surface between the diaphragm and the valve seat needs
to be precisely processed to ensure complete sealing when there is
no pulse signal, preventing compressed air leakage, and avoiding
energy waste and reduction of dust removal efficiency.
Technical Parameters:
| Fluororubber (FKM) | -20 ℃~200 ℃ (some Models Can Reach 260 ℃), Suitable For High
Temperature And Corrosive Environments (such As Chemical And Waste
Incineration) |
| Working pressure range | 0.4-0.7MPa |
| Brand | TAEHA |
| Diaphragm Material | NBR |
| Color | Red Green Black |
Brando No | Ordering Code | | | | |
DH20 | MD01-20, MD02-20 | | TH-5820-B TH-4820-B TH-5825-B TH-5820-C TH-4820-C | | |
DH25 | MD01-25, MD02-25 | | TH-4825-B TH-5825-C TH-4825-C TH-5840-F TH-4840-F TH-5825-M | | |
DH40 | MD01-40, MD02-40, MD03-40 | | TH-5840-B TH-5440-B TH-4840-B TH-4440-B TH-5840-C TH-5440-C TH-4840-C TH-4440-C TH-5850-F TH-5450-F TH-4850-F TH-4450-F TH-5440-M
TH-4440-M | | |
DH50 | MD03-50, MD03-50M | | TH-5450-B TH-4450-B TH-5450-M TH-4450-M | | |
DH62 | MD03-60, MD04-60 | | TH-5460-B TH-4460-B TH-5460-S TH-4460-S | | |
Applications:
Working Condition Adaptation:
The material selection of diaphragms is based on various factors
including the temperature of the dust removal system, type of
medium (such as oil-containing or corrosive gas), and pulse
pressure (typically 0.2~0.6MPa). For instance:
- Corrosive environments like waste incineration plants and chemical
workshops require fluororubber diaphragms.
- Normal temperature and non-corrosive environments like wood
processing and grain processing use nitrile rubber diaphragms.
Service Life:
Under regular operating conditions, high-quality diaphragms can
last for 100,000 to 300,000 pulse cycles (equivalent to about 1 to
3 years), depending on factors like material, working temperature,
pulse frequency, and maintenance. Improper maintenance, such as
high moisture content in compressed air leading to rapid aging of
the diaphragm, can significantly reduce its lifespan.
In summary, the key characteristics of Dahe pulse valve diaphragms
can be described as "high elasticity, strong sealing, fatigue
resistance, and excellent adaptability". The performance of these
diaphragms directly affects the stable operation of the pulse valve
and the overall dust removal system. When selecting diaphragms, it
is crucial to consider material, size, and mechanical properties in
conjunction with the specific working conditions.
Packing and Shipping:
Product Name: Pulse Valve Diaphragm
Description: High-quality diaphragm for pulse valves, designed to
provide reliable performance and durability.
Features:
- Durable and long-lasting material
- Compatible with various pulse valve models
- Easy to install and replace
Package Includes:
- 1 x Pulse Valve Diaphragm
- Installation instructions
Shipping Information:
- Shipping Method: Standard Shipping
- Delivery Time: 5-7 business days
- Shipping Cost: $5.99
