Redux-GE pressure reducing valve – Piston type PN 25. Nickel plated brass construction UNE-EN 12165. AISI 303 stainless steel sealing. Zinc plated steel spring EN-10270. EPDM perox joints. Gas threaded ends (BSP) F-F – ISO 228/1. Max. working temp. 130ºC.Also available NPT thread (3318N).Reference: 3318 See Technical Sheet