Expansion joint, ball joint JB-20 type (double type) bellows type expansion joint
It absorbs the axial expansion and contraction of the pipe caused by temperature changes.
Major features
- The amount of expansion and contraction is large.
- Even if the bellows is damaged, it is sealed at the ground so that first aid can be taken.
specification
| Product code | JB20-N |
|---|---|
| Valve type | Bellows type expansion joint |
| Nominal diameter | 32 to 300 (1 1/4 to 12) |
| Applicable fluid | Steam, air, inert gas, water, hot water, oil |
| Fluid temperature | 220 ℃ or less |
| Maximum working pressure | 1.0MPa |
| End connection | JIS 10K FF flange Please contact us for ASME (ANSI) Class 150 flanges. |
| Expansion and contraction amount | 140mm |
| Growth | 20mm |
| Shrink | 120mm |
| Material Flange | Rolled steel |
| Material outer cylinder | Rolled steel |
| Material Inner cylinder | SUS316L |
| Material bellows | SUS316L |
| Material Gland packing | Non-asbestos |
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Frequently Asked Questions and Explanations
Can the direction of rotation be absorbed?
The sleeve type can also absorb the shaft rotation of the pipe. (The bellows type cannot be absorbed and the bellows will be damaged.)
Is the amount of pipe elongation constant regardless of the nominal diameter?
Since the amount of elongation is determined by the temperature difference, it is constant regardless of the nominal diameter of the pipe. However, it depends on the type of pipe (steel, copper, stainless steel).
Is there a rule on whether to use a single type or a double type of expansion joint?
There is no rule. It doesn't matter which one you choose, as long as you select the number of pipes that matches the amount of expansion and contraction of the pipe.
Inquiries about this product
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