Guillemin coupling(SS) 1.Casting 2.EN14420-8 / NF E29572 3.Size: 1/2" to 4" 4.Material:SS,AL,Brass,PP,Nylon,Cast ... guillemin helicoidaleThread type:Male thread:EN ISO 228-1,BSPFemale thread: EN ISO 228-1,BSPSealing:NBR: black & standard for stainless ... and aluminiumEPOM: WhiteFPM: GreenPITE: WhiteGuillemin coupling sizes:>>1/2" to 4" SS Guillemin ...