Red CS Flange Rubber Bellows
The Red CS Flange Rubber Bellows is a flexible rubber connector fitted with red-coated carbon-steel flanges. It is used in water-circulation, HVAC, fire-service utility, pump-connection, industrial-cooling, and general process pipelines.
Description
Product Overview
The Red CS Flange Rubber Bellows is a flexible rubber connector fitted with red-coated carbon-steel flanges. It is used in water-circulation, HVAC, fire-service utility, pump-connection, industrial-cooling, and general process pipelines.
Specifications and Parameters
Main Connection Dimensions
|
Nominal Diameter DN |
|
Length L (mm) |
Axial Displacement |
|
Lateral Displacement (mm) |
Deflexion Angle (a1+a2) |
|
DN |
inch |
Extension |
Compression |
|||
|
32 |
1.25 |
95 |
7 |
13 |
11 |
±7.5 |
|
40 |
1.5 |
95 |
8 |
15 |
12 |
±7.5 |
|
50 |
2 |
105 |
10 |
19 |
13 |
±7.5 |
|
65 |
2.5 |
115 |
12 |
19 |
13 |
±7.5 |
|
80 |
3 |
135 |
12 |
20 |
14 |
±7.5 |
|
100 |
4 |
150 |
16 |
25 |
22 |
±7.5 |
|
125 |
5 |
165 |
16 |
25 |
22 |
±7.5 |
|
150 |
6 |
180 |
16 |
25 |
22 |
±7.5 |
|
200 |
8 |
210 |
16 |
25 |
22 |
±7.5 |
|
250 |
10 |
230 |
16 |
25 |
22 |
±7.5 |
|
300 |
12 |
255 |
16 |
25 |
22 |
±7.5 |
|
350 |
14 |
255 |
16 |
25 |
22 |
±7.5 |
|
400 |
16 |
255 |
16 |
25 |
22 |
±7.5 |
|
450 |
18 |
255 |
16 |
25 |
22 |
±7.5 |
|
500 |
20 |
260 |
16 |
25 |
22 |
±7.5 |
|
600 |
24 |
260 |
16 |
25 |
22 |
±7.5 |
|
700 |
28 |
260 |
18 |
26 |
24 |
±7.5 |
|
750 |
30 |
260 |
18 |
26 |
24 |
±7.5 |
|
800 |
32 |
260 |
10 |
19 |
13 |
±7.5 |
|
900 |
36 |
260 |
12 |
19 |
13 |
±7.5 |
|
1000 |
40 |
260 |
12 |
20 |
14 |
±7.5 |
|
1100 |
44 |
260 |
16 |
25 |
22 |
±7.5 |
|
1200 |
48 |
260 |
16 |
25 |
22 |
±7.5 |
|
1300 |
52 |
300 |
16 |
25 |
22 |
±7.5 |
|
1400 |
56 |
350 |
16 |
25 |
22 |
±7.5 |
|
1500 |
60 |
350 |
16 |
25 |
Core Advantages
1. Red epoxy-coated carbon-steel flanges. The cured coating separates the steel flange from condensation, cleaning water, and humid plant air. In HVAC rooms, fire-service lines, and cooling-water systems, the protected surface slows rust formation around bolt holes and non-sealing edges.
2. Machined flat sealing interface. The flange face distributes bolt compression evenly around the rubber bead. On large bolt patterns or repeatedly serviced connections, uniform contact prevents one side of the seal from carrying excessive compression and keeps the joint sealed through pressure cycling.
3. Integral cord-reinforced bellows body. Multi-layer nylon cord is vulcanized into the rubber profile and anchored through the flange transition. Under equipment vibration and thermal movement, the reinforcement controls ballooning while the elastomer flexes in axial, lateral, and angular directions.
Customization Capabilities
- Coating specification: Red shade, coating thickness, and marking can be matched to the plant identification system.
- Connection geometry: Flange drilling, sealing-face style, and face-to-face length are produced from the approved drawing.
- Service configuration: Rubber compound and optional limit rods are selected for the medium, temperature, and restraint condition.
Quality Control
Carbon-steel flanges are checked for thickness, bolt-circle accuracy, flatness, and surface preparation before the red epoxy finish is applied. Coating coverage is inspected around holes, edges, and non-sealing surfaces. Rubber compound, reinforcement placement, and vulcanization parameters are recorded by batch. Finished bellows receive dimensional inspection, flange-alignment checks, 100% pressure testing, and sealing inspection before protective covers are installed.
FAQ
Q: Are free samples available?
A: Yes. Standard samples can be supplied free of product charge. Freight and any special flange machining or coating shade are confirmed before dispatch.
Q: How are red flange bellows protected during shipment?
A: Flange faces are covered, coated edges are cushioned, and each unit is separated to prevent metal-to-metal contact. Large units are fixed in reinforced wooden cases.
Q: Is the red flange made from stainless steel?
A: No. The standard red flange is carbon steel with an epoxy protective finish. SS304 or SS316 can be selected as a separate material option.
Q: Can the flange color be matched to a plant identification standard?
A: Yes. Provide the required color reference and coating specification so the production sample can be approved before the order is completed.
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