Straight NPT/BSP hydraulic adapters

Straight fittings with NPT tapered threads on one side and BSP (inch) threads on the other side. Tapered threads are designed for the highest pressures. Typically, NPT threads are used in hydraulic equipment intended for the highest pressures (e.g., hydraulic pumps, hydraulic tools). The adapters presented here have an NPT thread on one side, which can be screwed into a component with an internal thread (e.g., a manual hydraulic pump), and an external BSP thread on the other side (which is a standard British inch thread). Any hydraulic hose fitted with a matching thread can be connected to the BSP inch thread. We offer various components with NPT threads in our range.

Precision hydraulic connections with NPT and BSP threads

Straight NPT/BSP adapters are high-quality hydraulic connectors that enable a secure and leak-proof connection between different thread standards used in hydraulic systems. They bridge NPT (National Pipe Thread) tapered threads with BSP (British Standard Pipe), allowing for the integration of hydraulic system components from various industrial standards. Precision threads – accurate machining of NPT and BSP threads ensures a tight connection without the need for additional sealants such as Teflon tape. Universal application – ideal for hydraulic and pneumatic systems, as well as industrial installations where connecting different thread standards is necessary.

Why are NPT connectors ideal for high pressures?

Tapered thread for maximum tightness. NPT (National Pipe Thread) was designed specifically for high-pressure hydraulic systems. Its tapered shape ensures that as the components are tightened, the connection becomes self-sealing, eliminating the risk of leaks even under extreme pressure loads. Unlike cylindrical BSPP threads, which require additional seals, NPT connectors provide excellent tightness inherently. Key features of NPT threads in high-pressure systems: Self-sealing design – the tapered thread causes the connector to tighten upon assembly, creating an incredibly secure connection. Resistance to vibration and dynamic loads – the perfect thread fit ensures NPT connections remain stable even under intensive hydraulic machinery operation. High-pressure capability – NPT threads used in hydraulics are designed to operate at pressures reaching up to 700 bar, making them a reliable choice for demanding industrial applications. Durability and deformation resistance – NPT connections made from robust materials, such as galvanized carbon steel or stainless steel, guarantee long service life and installation safety.

• material: galvanized free-cutting steel.  
• available NPT thread sizes: 1/4", 3/8", 1/2", 3/4", 1"