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 | CR Rolling Diaphragm, Pressure Regulating Valve Diaphragm |
| Material | NBR, NR, EPDM, FKM, CR |
| Application | Gas Pressure Regulating Installation |
| Size | DN8 - DN200 or Customized |
| Model | GMA-09 or Custom |
| Sample | OEM ODM |
| Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times |
| Brand Name | Hongum |
| Model Number | GMA-03, GMA-46, GMA-32, GMA-49, GMA-09, GMA-42, GMA-14, GMA-SM3, etc |
| Certification | 3A、CE、SGS approval |
| Place of Origin | China |
View Detail Information
Explore similar products
Customized Rubber Kit for Fuel Tank Isolation Valve Rubber Diaphragm Rolling
Saunders Industrial Aseptic Diaphragm Valve Kit Rubber Diaphragm Effective
Screw Rolling Pressure Switch Control Valve Diaphragm Pressure Reducing Valve
CR Material PVG Valve Assembly Rubber Kit Rubber Diaphragm Blow Off Valve Kits
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 | CR Rolling Diaphragm, Pressure Regulating Valve Diaphragm | Material | NBR, NR, EPDM, FKM, CR |
| Application | Gas Pressure Regulating Installation | Size | DN8 - DN200 or Customized |
| Model | GMA-09 or Custom | Sample | OEM ODM |
| Operating Temperature | -20℃~80℃ | Service Life | ≥1000000 times |
| Brand Name | Hongum | Model Number | GMA-03, GMA-46, GMA-32, GMA-49, GMA-09, GMA-42, GMA-14, GMA-SM3, etc |
| Certification | 3A、CE、SGS approval | Place of Origin | China |
| High Light | CR Rolling Valve Rubber Diaphragm ，Gas Pressure Regulating Rubber Diaphragm Seal ，Rolling FKM Diaphragm | ||
Customized Gas Pressure Regulating Installation EPDM CR FKM Rolling Diaphragm Valve Rubber Diaphragm
EPDM CR FKM Rolling Diaphragm Introduction:
The rolling diaphragm is in the shape of a top hat in the free state. CR Rolling Diaphragm 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.
(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.
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.
(1) Diaphragm material: nitrile rubber can be selected for natural gas and LPG, and chlorohydrin rubber can be used for gas.
(2) There is an elastic polyester cloth interlayer inside the diaphragm. Carefully observe the inner and outer surfaces of the diaphragm. One side can vaguely see the texture of the mesh cloth, and the other side is smooth. The smooth side 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.
| Product Materials | NBR,NR |
| Operating Temperature | -20℃~80℃ |
| Service Life | ≥1000000 times |
| Usage Scenario | Gas pressure regulator |
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 |
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...
Get in touch with us
Leave a Message, we will call you back quickly!