Yoshitake EB-1J is a single type bellows expansion joint designed for steam, air, cold and hot water, oil, and other non-dangerous fluids. It complies with JIS B 2352 (application A) and features a simple structure combining a flange, short pipe, and bellows into a single unit. The stainless steel wetted parts offer high corrosion resistance, while the outer pipe protects the bellows from external impact and the inner pipe prevents pressure loss and vibration.

Features

• Simple structure since flange, short pipe and bellows are united.
• Outer pipe is attached in order to protect the bellows from damage due to external impact.
• Stainless steel inner pipe is attached in order to prevent fluid pressure loss, vibration, impact, corrosion, etc.
• Stainless steel made wetted parts offer high resistance to corrosion and ensures distinguished durability.

Specifications

• Application: Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
• Maximum Pressure: 1.0 MPa
• Maximum Temperature: 220°C
• Max. Axial Extension: 35 mm (Expansion 10 mm, Compression 25 mm)
• Material (Outer Pipe): Carbon steel
• Material (Bellows, Inner Pipe): Stainless steel (SUS316L)
• Connection: JIS 10K FF flanged

Note

Expansion of one side from the centering anchor base is 10 mm and compression is 25 mm. Available with all stainless steel made.

Dimensions and Weights

Nominal size	L	Max. operating length	Min. operating length	Max. axial extension δ	Do	d	l	Weight (kg)
20A	365	375	340	35	58.2	100	235	2.6
25A	365	375	340	35	58.2	125	235	3.3
32A	365	375	340	35	73.2	135	235	4.8
40A	365	375	340	35	73.2	140	235	5.0
50A	365	375	340	35	98.2	155	239	5.7
65A	415	425	390	35	109.7	175	289	8.9
80A	415	425	390	35	135.7	185	288	10.1
100A	415	425	390	35	161.7	210	288	11.0
125A	440	450	415	35	212.1	250	292	21.0
150A	440	450	415	35	235.1	280	293	26.3
200A	440	450	415	35	291.6	330	280	35.3
250A	465	475	440	35	332.6	400	287	52.5

Structural Drawing and Parts

No.	Name of Parts	Material
1	Packing Seat	Stainless Steel (SUS316L)
2	Flange	Rolled Steel (SS400)
3	Guide Pipe	Carbon Steel Tube (STK)
4	Ring	Rolled Steel (SS400)
5	Bellows	Stainless Steel (SUS316L)
6	Outside Pipe	Rolled Mild Steel (SPHC)
7	Inside Pipe	Stainless Steel (SUS316L)
8	Ring	Rolled Steel (SS400)
9	Shipping Washer	Rolled Mild Steel (SPHC)
10	Shipping Bolt	Rolled Steel (SS400)
11	Guide Pipe	Carbon Steel Tube (STK)

WARNING

Be sure to remove the shipping Washer and shipping Bolt after installation (Fixing point and guide execution).