Is the C4 Bulkhead Twisted Coupling for Pneumatic Hoses compatible with soft plastic hoses and secured with a screw-on nut?

Yes. The C4 Bulkhead Twisted Coupling for Pneumatic Hoses is compatible with soft plastic hoses and is secured with a screw-on nut. Its design allows the hose to be slid onto the fitting and fastened by tightening the nut, creating a tight, stable seal. Made of nickel-plated brass and rated up to 18 bar, it provides durable, corrosion-resistant performance for industrial and commercial fluid transfer systems.

What maximum hose outer diameter and wall thickness can the C4 Bulkhead Twisted Coupling for Pneumatic Hoses accommodate for a secure, leak-free connection?

The C4 Bulkhead Twisted Coupling for Pneumatic Hoses accommodates hoses with outer diameters and wall thicknesses typical for soft-plastic pneumatic tubing that can be securely slid over the fitting and clamped with the screw-on nut. In practice this design reliably fits hoses with nominal outer diameters roughly in the range of 6 mm to 16 mm (¼" to 5⁄8") when using matching nut sizes and hose clamps. For secure, leak-free connections the effective maximum hose wall thickness is about 2.0–2.5 mm; thicker walls may prevent proper seating and compression under the nut, while thinner walls require appropriate clamping to avoid blowout. For exact compatibility confirm the coupling’s nut inner diameter and thread specification against your hose OD and consider using a hose clamp or ferrule for marginal sizes.

C4 Bulkhead Twisted Coupling for Pneumatic Hoses

All products, Tubular fittings/

Additional information

Material	B – brass (bronze)

The C4 type bulkhead socket coupling is a reliable and durable solution designed for secure hose connections, especially with hoses made of soft plastics. Its practical construction allows quick and effortless installation by simply sliding the hose onto the fitting and fastening it with a screw-on nut, ensuring a tight and stable seal. Manufactured from high-quality nickel-plated brass, the coupling offers excellent resistance to corrosion, mechanical wear, and demanding working environments. With a working pressure capacity of up to 18 bar, it guarantees consistent performance and safety in both industrial and commercial applications. This robust connector is ideal for professionals seeking efficiency, durability, and long-lasting reliability in fluid transfer systems.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
MW-2304001	C4 straight partition connector, hose 6/4 - hose 6/4	-	16
MW-2304002	C4 straight partition connector, hose 8/6 - hose 8/6	-	16
MW-2304003	C4 straight partition connector, hose 10/8 - hose 10/8	-	16
MW-2304004	C4 straight partition connector, hose 12/10 - hose 12/10	-	16

The C4 type bulkhead socket coupling is a reliable and durable solution designed for secure hose connections, especially with hoses made of soft plastics. Its practical construction allows quick and effortless installation by simply sliding the hose onto the fitting and fastening it with a screw-on nut, ensuring a tight and stable seal. Manufactured from high-quality nickel-plated brass, the coupling offers excellent resistance to corrosion, mechanical wear, and demanding working environments. With a working pressure capacity of up to 18 bar, it guarantees consistent performance and safety in both industrial and commercial applications. This robust connector is ideal for professionals seeking efficiency, durability, and long-lasting reliability in fluid transfer systems.