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.
