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Address: 5F, No.200 Guoding Road, Shanghai China 201105
Contact name:Sophia Lau
Hongum Technology (Shanghai) Co., Ltd |
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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.
