接头基本参数：
| 型号 | 卡口范围 | 螺纹长度（GL） | 高度（H） | 扳手尺寸 | 黑色 | 蓝色 | 灰色 |
| NPT3/8" | 4-8 | 8 | 22 | 22 | P-N3/8A-BL | P-N3/8A-BU | P-N3/8A-GY |
| NPT3/8" | 2-6 | 8 | 22 | 22 | P-N3/8B-BL | P-N3/8B-BU | P-N3/8B-GY |
| NPT1/2" | 6-12 | 10 | 27 | 27 | P-N1/2A-BL | P-N1/2A-BU | P-N1/2A-GY |
| NPT1/2" | 5-9 | 10 | 27 | 27 | P-N1/2B-BL | P-N1/2B-BU | P-N1/2B-GY |
| NPT3/4" | 13-18 | 11 | 31 | 33 | P-N3/4A-BL | P-N3/4A-BU | P-N3/4A-GY |
| NPT3/4" | 9-16 | 11 | 31 | 33 | P-N3/4B-BL | P-N3/4B-BU | P-N3/4B-GY |
| NPT1" | 18-25 | 11 | 39 | 42 | P-N1A-BL | P-N1A-BU | P-N1A-GY |
| NPT1" | 13-20 | 11 | 39 | 42 | P-N1B-BL | P-N1B-BU | P-N1B-GY |
| NPT1 1/4" | 22-32 | 13 | 48 | 53 | P-N1 1/4A-BL | P-N1 1/4A-BU | P-N1 1/4A-GY |
| NPT1 1/4" | 20-26 | 13 | 48 | 53 | P-N1 1/4B-BL | P-N1 1/4B-BU | P-N1 1/4B-GY |
| NPT2" | 37-44 | 14 | 49 | 68 | P-N2A-BL | P-N2A-BU | P-N2A-GY |
| NPT2" | 29-35 | 14 | 49 | 68 | P-N2B-BL | P-N2B-BU | P-N2B-GY |
| NPT2 1/2" | 51-57 | 20 | 54 | 80 | P-N2 1/2A-BL | P-N2 1/2A-BU | P-N2 1/2A-GY |
| NPT2 1/2" | 43-53 | 20 | 54 | 80 | P-N2 1/2B-BL | P-N2 1/2B-BU | P-N2 1/2B-GY |