Internal thread direct External thread direct Internal thread elbow External thread elbow Internal thread tee External thread tee Internal thread union External thread union Plastic pipe joint stop valve Internal screw thread connect stop valve Plastic pipe PE-X valve Plastic PE-X valve Plastic valve PE-X Internal check valve Graduated stop valve Aluminum ball valve Internal thread of valve Common water tap Short mouth water tap Long mouth water tap Straight joint Reducing joint Internal thread joint External thread joint Straight tee Reducing tee External thread tee Straight elbow Different diameter elbow Internal thread elbow External thread elbow External thread elbow Straight joint Reducing joint Internal thread joint External thread joint Straight tee Reducing tee Internal thread tee External thread tee equal elbow Reducing elbow Internal thread elbow External thread elbow External thread bend Straight joint Reducing joint Internal thread joint External thread joint Straight tee Reducing tee Internal thread tee External thread tee Straight bend Usher thread bend Female elbow Male elbow Elbow with seat External tooth alignment Straight joint Internal thread joint External thread joint Straight bend Straight bend Internal thread bend Straight tee Internal thread tee External thread tee Usher thread bend