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 | Oil Cylinder EPDM CR FKM Rolling Diaphragm, Hydraulic Machinery Valve Rubber Diaphragm |
| Material | NBR NR EPDM, etc |
| Application | Gas Pressure Regulator, Oil Cylinder, Hydraulic Machinery |
| Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times |
| Size | DN8 - DN200 or Customized |
| Model | GMA-32 or Custom |
| Sample | Available |
| Brand Name | Hongum |
| Model Number | GMA-32 |
| 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 | Oil Cylinder EPDM CR FKM Rolling Diaphragm, Hydraulic Machinery Valve Rubber Diaphragm | Material | NBR NR EPDM, etc |
| Application | Gas Pressure Regulator, Oil Cylinder, Hydraulic Machinery | Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times | Size | DN8 - DN200 or Customized |
| Model | GMA-32 or Custom | Sample | Available |
| Brand Name | Hongum | Model Number | GMA-32 |
| Certification | 3A、CE、SGS approval | Place of Origin | China |
| High Light | Customized Oil Cylinder Rolling Diaphragm ，CR Rolling Diaphragm Seal ，Hydraulic Machinery Valve Rubber Diaphragm | ||
Customized Oil Cylinder EPDM CR FKM Rolling Diaphragm Hydraulic Machinery Valve Rubber Diaphragm
Oil Cylinder EPDM CR FKM Rolling Diaphragm Introduction:
In the design of some medium and low pressure regulators, in order to solve the problem of unbalanced pressure regulator disc and improve the performance of the regulator, the method of installing a balanced diaphragm is often used. Installing a balancing diaphragm increases the differential pressure between the inlet and outlet pressures of the regulator. In the voltage regulator industry, it is called a balanced diaphragm in terms of use, and it is called a rolling diaphragm in rubber, instrumentation, machinery and other industries.
| Product Materials | NBR,NR,etc. |
| Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times |
| Usage Scenario | Gas pressure regulator |
(1) There should be no straight edges and corners at the corners of the diaphragm, and arcs should be made to avoid easy fracture after folding and loss of glue during vulcanization. The intersection of the inner wall of the sleeve and the end face should also be poured with arc angles to avoid sharp corners, piece.
(2) Diaphragm material: nitrile rubber is used for natural gas and LPG, and chlorohydrin rubber is used for gas.
(3) There is an elastic polyester cloth interlayer in the diaphragm. Carefully observe the inner and outer surfaces of the diaphragm. One side can vaguely see the pattern of the mesh cloth, and the other side is a smooth surface. The smooth surface is required to be the pressure surface of the gas. Therefore, For the diaphragm installed in the forward direction, the smooth surface is on the inner surface of the diaphragm, and the smooth surface of the diaphragm installed in the reverse direction is on the outer surface, which can avoid leakage and improve the compressive strength of the diaphragm.
Oil Cylinder EPDM CR FKM Rolling Diaphragm Material details:
For the present, common materials for rolling diaphragm are: natural rubber (NR), nitrile butadiene rubber (NBR), the performance of the two materials can meet the needs of most industrial environments. In special industrial environments (high temperature resistance, acid and alkali resistance) could use EPDM, fluorine rubber (FKM), neoprene rubber (CR) for production, but the cost is relatively high.
Oil Cylinder EPDM CR FKM Rolling 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 |
Hongum supply various of rubber diaphragms, dampers and all kinds of other rubber and plastic hardwares for boat, yacht, wharf and sea farm industries, such as marine float, fast ray paddle, and other boat and wharf rubber and plastic accessories.
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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