JB-22, Bellows Expansion/Contraction Pipe Fitting

JB-22, Bellows Expansion/Contraction Pipe Fitting

Enhanced durability for building facilities, air-conditioning facilities, factory facilities, etc. with use of double-layer bellows

· Compliant with JIS B2352 bellows expansion pipe fitting Application A (primarily including cooling and heating, air conditioning and sanitary piping).
· Absorbs expansion and contraction in the axial direction of the pipe caused by temperature changes.
· Two-layer bellows improves durability.
· Stainless steel is used for all parts excluding the flange. The materials of the bellows as well as the liquid-contacting parts are SUS316L.
· A loose flange is used for end connections in order to absorb play in the circumferential direction of the bolt hole.
· A compound fitting (JB-22 nominal diameter of 150 or less) can be used to adjust the mounting leg position (fine tuning of the height and forward back direction).


Japanese Only

Part Number

Configured Part Number is shown.

Part Number
Part NumberVolume DiscountDays to ShipNominal Diameter
7 Day(s) or more 3/4B(20A)
7 Day(s) or more 1B(25A)
7 Day(s) or more 1 1/4B(32A)
7 Day(s) or more 1 1/2B(40A)
7 Day(s) or more 2B(50A)
7 Day(s) or more 2 1/2B(65A)
7 Day(s) or more 3B(80A)
7 Day(s) or more 4B(100A)
7 Day(s) or more 5B(125A)
7 Day(s) or more 6B(150A)
7 Day(s) or more 8B(200A)
7 Day(s) or more 10B(250A)
Quote 12B(300A)


  1. 1

Basic Information

Fitting Type Bellows shape Applicable Fluid Steam / Water / Gas / Oil / Air End Connection JIS, 10K, Loose Flange
Wetted Materials Stainless Steel (SUS316L) Connecting Part Material SS Maximum Applicable Pressure(MPa) 1
Fluid temperature(℃) 220 or Less

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