Can Twisted tee for pneumatic pipes and hoses "T", type B9 be used with plastic hoses without reinforcing sleeves (B12) and still maintain the 60 bar working pressure?

No . Twisted tee for pneumatic pipes and hoses "T", type B9 should not be used with unreinforced plastic hoses if you need to guarantee the 60 bar working pressure. The product description explicitly states the fitting is intended for copper pipes and plastic hoses, but when connecting to hoses the use of reinforcing sleeves (B12) is recommended. Reinforcing sleeves strengthen the hose end, prevent extrusion or blowout under high pressure, and ensure a proper seal with the locking ring. Without the sleeve, the connectionâs integrity at 60 bar cannot be assured and risks leakage or failure. Use B12 sleeves with plastic hoses to maintain the rated 60 bar working pressure.

Does Twisted tee for pneumatic pipes and hoses "T", type B9 require reinforcing sleeves (B12) on plastic hoses to safely hold 60 bar?

Yes. Twisted tee for pneumatic pipes and hoses "T", type B9 requires reinforcing sleeves (B12) on plastic hoses to safely hold 60 bar. The product description explicitly states that when connecting to hoses, use of reinforcing sleeves (B12) is recommended; this ensures the plastic hose end is supported and the locking ring can retain the hose at the stated working pressure of 60 bar.

Twisted tee for pneumatic pipes and hoses “T”, type B9

Q: Are reinforcing sleeves (B12) mandatory for Twisted tee for pneumatic pipes and hoses "T", type B9 when used with plastic hoses?

No. reinforcing sleeves (B12) are not mandatory. According to the description of the Screwed "T" fitting, type B9, with a locking ring intended for connecting copper pipes and plastic hoses, the use of reinforcing sleeves (B12) is recommended when connecting to plastic hoses, but not required. The fitting (Twisted tee for pneumatic pipes and hoses "T", type B9) is made of nickel-plated brass and rated to 60 bar; using B12 sleeves improves hose end support and reliability, so they should be used wherever higher sealing integrity or long-term durability is desired, but the product information specifies recommendation rather than an absolute requirement.

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Twisted tee for pneumatic pipes and hoses "T", type B9

Additional information

Material	B – brass (bronze)

Screwed “T” fitting, type B9, with a locking ring intended for connecting copper pipes and plastic hoses. When connecting to hoses, the use of reinforcing sleeves (B12) is recommended. Material: nickel-plated brass. Working pressure: 60 bar.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
MW-2209001	B9 tee connector, 3 x tube (hose) 4/2	-	60	In stock	Enquiry
MW-2209002	B9 tee fitting, 3 x tube (hose) 6/4	-	60	In stock	Enquiry
MW-2209003	B9 tee fitting, 3 x tube (hose) 8/6	-	60	In stock	Enquiry
MW-2209004	B9 tee connector, 3 x tube (hose) 10/8	-	60	In stock	Enquiry
MW-2209005	B9 tee connector, 3 x tube (hose) 12/10	-	60	In stock	Enquiry
MW-2209006	B9 tee fitting, 3 x tube (hose) 15/12	-	60	In stock	Enquiry

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Screwed “T” fitting, type B9, with a locking ring intended for connecting copper pipes and plastic hoses. When connecting to hoses, the use of reinforcing sleeves (B12) is recommended. Material: nickel-plated brass. Working pressure: 60 bar.