150lb Screwed Pipe Fittings

150lb screwed pipe fittings are a trusted and widely used solution for low to medium-pressure piping systems, offering simplicity, flexibility, and cost-efficiency. These fittings use threaded ends—typically BSP or NPT—to join pipes and components without welding, making installation fast and maintenance-friendly. Available in a wide variety of configurations such as elbows, tees, unions, nipples, couplings, and plugs, they allow for changes in direction, size, and flow control within the piping system.

Where are these used

150lb screwed pipe fittings are widely used across commercial and industrial plumbing systems due to their ease of installation and reliable sealing at low to medium pressures. In HVAC applications, these fittings are commonly used to connect chilled water and heating lines, offering flexibility during initial setup and straightforward access during future maintenance or retrofits. Their threaded design allows for quick disassembly and reassembly without the need for hot works, making them ideal in environments where downtime needs to be kept to a minimum. Additionally, their compatibility with a range of pipe sizes and materials means they can be integrated easily into existing infrastructure.

These fittings are also a popular choice in compressed air and gas distribution systems, general-purpose water and oil lines, and even light-duty steam applications within the food, beverage, and process industries. Their reusability and dependable leak-tight connections make them ideal for temporary pipework on construction sites or maintenance projects, where system layouts often need to change quickly. Whether used in fixed installations or mobile systems, 150lb screwed fittings provide a cost-effective and practical solution where moderate pressure, accessibility, and system flexibility are priorities.

Why They’re Important

These fittings are crucial because they provide a flexible, efficient, and practical solution for constructing, modifying, and maintaining pipe systems without the need for permanent or welded connections. Their threaded design allows for quick and straightforward assembly, which reduces labour time and eliminates the need for specialised tools or hot work permits. This makes them especially valuable in sites with restricted access, environments with safety concerns, or operations requiring minimal disruption. The ability to easily disassemble and reconfigure them also supports rapid system modifications, upgrades, and emergency repairs.

In addition to their installation flexibility, 150lb screwed pipe fittings deliver a secure and leak-resistant seal under low to medium pressure conditions, making them highly suitable for a wide range of industrial, commercial, and process applications. Their availability in multiple configurations and materials allows them to be used across diverse industries including HVAC, compressed air, food processing, and construction. They offer excellent compatibility with standard pipe threads such as BSP and NPT, ensuring seamless integration into existing systems. By combining ease of use, reusability, and reliable performance, these fittings play a vital role in ensuring system uptime, reducing operational costs, and enhancing the adaptability of modern pipeline infrastructure.

Frequently Asked Questions

"150lb" refers to the pressure class, indicating the fitting is suitable for systems with a maximum pressure rating of around 150 psi at ambient temperature. It helps users choose fittings that match their system's pressure requirements.

Yes, they can be used for low-pressure steam systems, provided the materials and thread sealing methods are appropriate for the application. Always check temperature and pressure ratings to ensure safety.

No, NPT and BSP threads have different thread angles and pitches. Always match the thread type exactly to avoid leaks or thread damage.

They are typically made from stainless steel, carbon steel, brass, and galvanised iron. The material should be selected based on fluid type, pressure, and environmental conditions.

Yes, one of the main advantages of screwed fittings is that they can be removed and reused, making them cost-effective for systems requiring regular changes or maintenance.

Thread sealants like PTFE tape (Teflon) or anaerobic thread sealant are commonly used to ensure a leak-proof connection. Always apply according to manufacturer instructions.

Only standard pipe wrenches or adjustable spanners are needed. Avoid over-tightening, which can damage the threads.

They are typically available from 1/8" up to 4" nominal pipe size, depending on the type and material of the fitting.

Yes, if made from approved materials like lead-free brass or 316 stainless steel. Always verify the fitting’s certifications for drinking water use.

Screwed fittings are not designed to be welded. If a welded joint is required, consider using butt weld or socket weld fittings instead.

Yes, particularly if made from corrosion-resistant materials like stainless steel or coated carbon steel. Environmental exposure should always be factored into the material choice.

Most 150lb screwed fittings conform to ASME B16.3, with some also meeting ISO or BS standards depending on region and supplier.