Can the Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 be used with plastic hoses without reinforcing sleeves (B12)?

No . the Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 should not be used with unreinforced plastic hoses (B12 absent). The B4 is a cuttingâring fitting designed for copper pipes and for plastic hoses only when a reinforcing sleeve (B12) is installed. The sleeve supports the hose wall against the cutting action and ensures proper sealing and mechanical strength. Without the B12 sleeve, the plastic hose may deform, leak, or fail under the rated working pressure (60 bar), and the connection will be unreliable and unsafe. Use the recommended reinforcing sleeve or choose a fitting specifically rated for unreinforced plastic hoses.

Is Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 compatible with stainless-steel braided hoses?

Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 is designed for connecting copper pipes and plastic hoses using a cutting ring. It is nickel-plated brass and recommends reinforcing sleeves (B12) when used with hoses. Stainless-steel braided hoses are not mentioned and typically require fittings rated and designed for metal-braided construction; the cutting-ring design and recommended reinforcing sleeve suggest compatibility primarily with softer-walled hoses (plastic) rather than stainless-steel braided ones. Therefore compatibility with stainless-steel braided hoses is unlikely without confirmation from the manufacturer or a specific adapter/fitting rated for stainless-steel braid.

Does Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 require specific hose diameters when used with reinforcing sleeves?

No. Twisted coupling for pneumatic pipes and hoses bulkhead, type B4 does not intrinsically require specific hose diameters when used with reinforcing sleeves (B12), but correct matching of sleeve, hose inner/outer diameter and the B4 cutting ring is essential for a reliable connection. Explanation: - The B4 bulkhead fitting is a cuttingâring design intended for copper pipes and plastic hoses. Its sealing and retention rely on the cutting ring biting the pipe or hose outer surface. - When you add a reinforcing sleeve (B12) for plastic hoses, the sleeveâs purpose is to prevent hose collapse and improve mechanical strength at the fitting. The sleeve must fit inside the hose bore and present a firm mating surface for the cutting ring. - Therefore you must choose a reinforcing sleeve and hose whose inner diameter fits the sleeve snugly and whose outer diameter matches the B4 cutting ring dimension. If the sleeve is too small the hose will not seat; if too large the cutting ring cannot form a proper seal. The fittingâs nominal size (e.g., indicated pipe/hose size for B4) determines the appropriate sleeve and hose size range. - Working pressure (60 bar) increases the importance of correct dimensional match and proper installation torque. Use manufacturer dimensions/specs for B4 and B12 combinations or consult technical data to confirm compatible hose IDs/ODs and sleeve sizes. Conclusion: No special diameter is mandated beyond using the B4âs specified nominal size and matching a B12 reinforcing sleeve sized to that hose. Correct compatibility and installation are required for safe operation at 60 bar.

Twisted coupling for pneumatic pipes and hoses bulkhead, type B4

All products, Cutting ring fittings/

Additional information

Material	B – brass (bronze)

B4 type bulkhead fitting with a cutting ring designed 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	Nominal inner diameter	Working pressure [bar]
MW-2204001	B4 straight partition connector, tube (hose) 6/4 - tube (hose) 6/4	-	60
MW-2204002	B4 straight partition connector, tube (hose) 8/6 - tube (hose) 8/6	-	60
MW-2204003	B4 straight partition connector, tube (hose) 10/8 - tube (hose) 10/8	-	60
MW-2204004	B4 straight partition connector, tube (hose) 12/10 - tube (hose) 12/10	-	60
MW-2204005	B4 straight partition connector, tube (hose) 15/12 - tube (hose) 15/12	-	60

B4 type bulkhead fitting with a cutting ring designed 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.