Stop Valve Isolating Valve NBR NR EPDM FKM CR Pneumatic Cut Off
Valve Rubber Diaphragm
Cut Off Valve Rubber Diaphragm Introduction:
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.
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.
Cut Off Valve Rubber 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.
Cut Off Valve 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 |
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1. Packaging is neutral packing or customized packing.
2. We will reply you within 24 hours.
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4. OEM or ODM orders are welcomed.
5. Trial orders are acceptable.
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