Whether you’re working on a domestic heating system, exterior commercial system, or simply want fittings with improved corrosion resistance, we have a complete range of 316 Stainless Steel fittings all of which conform to ISO 4144 standards. Our 150lb Class fittings are all BSP threaded (female are parallel, male are tapered) with operating temperature range of -20°C to 220°C. Designed for use in low pressure applications, suitable for use in industries such as petrochemical, water distribution, paper production, marine, and food and beverage.