... coupling, Adjustable coupling, coupling with screw; Elbow -- equal elbow, reducing elbow, elbow with plain end, elbow with screw; Tee -- equal ... tee, reducing tee, tee with screw; Other fittings -- ... EN10312 sizes.-- Working temperature from -20 to 110 degree centigrade (with Chlorinated butyl rubber O ring),-- Suit medium: ...