Hongum Technology (Shanghai) Co., Ltd
| Payment Terms | Wire Transfers, letters of credit, Western Union, Paypal, T/T, L/C |
| Supply Ability | 5000PCS/Month |
| Delivery Time | 7~15 working days |
| Packaging Details | PE+carton box |
| Name | Valve Rubber Diaphragm, Air Brake Actuator Rubber Diaphragm |
| Material | NBR, NR, EPDM, etc. |
| Usage scene | Cutting-off Air Brake System, Air Brake Actuator, Gas pressure regulator |
| Temperature | -20°~80° |
| Model | ZMA, HA, CV3000, ZH, etc. |
| Color | Black or customized |
| Brand Name | Hongum |
| Model Number | Customized |
| Certification | 3A、CE、SGS approval |
| Place of Origin | China |
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Product Specification
| Payment Terms | Wire Transfers, letters of credit, Western Union, Paypal, T/T, L/C | Supply Ability | 5000PCS/Month |
| Delivery Time | 7~15 working days | Packaging Details | PE+carton box |
| Name | Valve Rubber Diaphragm, Air Brake Actuator Rubber Diaphragm | Material | NBR, NR, EPDM, etc. |
| Usage scene | Cutting-off Air Brake System, Air Brake Actuator, Gas pressure regulator | Temperature | -20°~80° |
| Model | ZMA, HA, CV3000, ZH, etc. | Color | Black or customized |
| Brand Name | Hongum | Model Number | Customized |
| Certification | 3A、CE、SGS approval | Place of Origin | China |
| High Light | Air Brake System Rubber Diaphragm ，Cutting Off Natural Rubber Diaphragm ，NBR Rubber Cylinder Diaphragm | ||
Natural Rubber Diaphragm Cutting-off Air Brake System Air Brake Actuator Rubber Diaphragm
Air Brake Actuator Rubber Diaphragm Product Overviews:
The rolling diaphragm is shaped like a top hat in the free state. It is made of rubber with silk cloth. The middle hole on the top is used for installing the valve stem. In order to fit, fix and seal, the top and bottom can be equipped with 0 type edge changer, or the bottom surrounding with mounting hole.
The rubber diaphragm is mainly used in the pneumatic film actuator, which can convert the control signal (DC4～20mA or 1-5V) output by the controller into the linear displacement of the valve stem through the (intelligent) electric valve positioner and the pneumatic film actuator. Or valve shaft angular displacement accessories.
| Product Materials | NBR,NR, etc. |
| Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times |
| Usage Scenario | Gas pressure regulator |
Air Brake Actuator Rubber Diaphragm Introduction:
In the design of some medium and low pressure regulators, in order to solve the problem of unbalanced pressure regulating valve disc and improve the performance of the pressure regulator, the method of installing a balance diaphragm is often used. When a balancing diaphragm is installed, the differential pressure between the inlet pressure and the outlet pressure of the regulator can be increased. In the regulator industry, it is called a balance diaphragm in terms of use, and it is called a rolling diaphragm in the rubber, instrument, machinery and other industries.
The rolling diaphragm is in the shape of a top hat in the free state. It is made of rubber with silk cloth. The top middle hole is used to install the valve stem. In order to install, fix and seal, the top and bottom can have O-ring edges. Or in the form of fixing holes around the bottom edge.
Air Brake Actuator Rubber Diaphragm Specifications:
| Rolling Diaphragm | Model | Outer diameter(mm) | Inside diameter(mm) | Base diameter(mm) | Height(mm) | Thickness(mm) | Pressure |
| GMA-20 | 38 | 22 | 17 | 21 | 0.6 | 0.1-1MPa | |
| GMA-201 | 45 | 40 | 33 | 28 | 0.7 | 0.1-1MPa | |
| GMA-202 | 49 | 37 | 26 | 22 | 0.7 | 0.1-1MPa | |
| GMA-21S | 61 | 50 | 39 | 29 | 0.7 | 0.1-1MPa | |
| GMA-21 | 63 | 53 | 43 | 33 | 0.7 | 0.1-1MPa | |
| GMA-22 | 65 | 50 | 45 | 51 | 0.7 | 0.1-1MPa | |
| GMA-23 | 80 | 72 | 55 | 35 | 0.7 | 0.1-1MPa | |
| GMA-24 | 94 | 74 | 64 | 45 | 0.7 | 0.1-1MPa | |
| GMA-31 | 96 | 90 | 79 | 90 | 0.8 | 0.1-1MPa | |
| GMA-301 | 98 | 80 | 70 | 34 | 1.5 | 0.1-1MPa | |
| GMA-311 | 120 | 102 | 94 | 60 | 0.8 | 0.1-1MPa | |
| GMA-32 | 140 | 93.2 | 83.2 | 56 | 1 | 0.1-1MPa | |
| GMA-33 | 184 | 167 | 155 | 80 | 1 | 0.1-1MPa | |
| GMA-34 | 216 | 170 | 142 | 40 | 1.1 | 0.1-1MPa | |
| GMA-SMI | 118 | 108 | 100 | 72 | 0.9 | 0.1-1MPa | |
| GMA-SM2 | 95 | 87 | 80 | 90 | 0.9 | 0.1-1MPa | |
| GMA-ST | 155 | 137 | 110 | 128 | 0.8 | 0.1-1MPa |
Our service:
1. Packaging is neutral packing or customized packing.
2. We will reply you within 24 hours.
3. We will also provide you with good after-sales service.
4. OEM or ODM orders are welcomed.
5. Trial orders are acceptable.
6. High quality and factory price.
7. 100% ensured the quality.
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company
Year Established:
2017
Total Annual:
500000-8000000
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Hongum is specialized in research, production, sales, and distribution. It is located in the base of technology transfer of CAS, committed to research and development of new materials in both rubber and plastic industry. Hongum supply various of rubber diaphragms, dampers and all kinds of other r... Hongum is specialized in research, production, sales, and distribution. It is located in the base of technology transfer of CAS, committed to research and development of new materials in both rubber and plastic industry. Hongum supply various of rubber diaphragms, dampers and all kinds of other r...
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