Product Information Material: Brass Seat: PTFE Female Thread: BSP Select a Product Part NumberSizeWorking Pressure BBVAGAMF0121/2" (15mm)710 PSI BBVAGAMF0203/4" (20mm)570 PSI BBVAGAMF0251" (25mm)570 PSI BRBLMF0401-1/2" (40mm)363 PSI