Expansion joint, ball joint JB-24 type (double type) bellows type expansion joint
- Where to use
- Building equipment / air conditioning equipmentFactory equipment
Major features
- Durability is improved by adopting a double-layer bellows.
- All stainless steel is used except the flange.
- A loose flange is used for the end connection to absorb the displacement of the bolt hole in the circumferential direction.
specification
| Product code | JB24-N |
|---|---|
| Valve type | Bellows type expansion joint |
| Nominal diameter | 20-300 (3/4-12)We also manufacture products with a nominal diameter of 350 or more, so please contact us. |
| Applicable fluid | Steam, air, inert gas, water, hot water, oil |
| Fluid temperature | 250 ℃ or less |
| Maximum working pressure | 2.0MPa |
| End connection | JIS 20K loose flange |
| Expansion and contraction amount | 70mm |
| Growth | 20mm |
| Shrink | 50mm |
| Material Flange | Carbon steel Stainless steel flange = ALL Stainless steel is also manufactured. (Product code: JB23-K, JB24-K) |
| Material outer cylinder | Stainless steel |
| Material Inner cylinder | A240-316L (equivalent to SUS316L) A240-316L is an ASTM standard product. |
| Material bellows | A240-316L (equivalent to SUS316L) A240-316L is an ASTM standard product. |
- The structure is slightly different depending on the nominal diameter.
Download materials
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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