
| Equal Coupling | |||||
| Picture | European Standard | Picture | Chinese Standard | Picture | American Standard | 
|   | S15 |   | S15 |   | S1/4 | 
| S22 | S22 | S1/2 | |||
| S28 | S28 | S5/8 | |||
| S35 | S35 | S7/8 | |||
| S42 | S42 | S1 1/8 | |||
| S54 | S54 | S1 3/8 | |||
| S67 | S67 | S1 5/8 | |||
| S76 | S76 | S2 1/8 | |||
| S89 | S89 | S2 5/8 | |||
| S108 | S108 | S3 1/8 | |||
| S133 | S133 | S3 5/8 | |||
| S159 | S159 | S4 1/8 | |||
| S219 | S219 | S5 1/8 | |||
| S273 | S273 | S6 1/8 | |||
| S325 | S325 | S8 1/8 | |||
| Reducing Coupling | |||||
| Picture | European Standard | Picture | Chinese Standard | Picture | American Standard | 
|   | S22*15 |   | S22*15 |   | S1 1/8*5/8 | 
| S28*15 | S28*15 | S1 1/8*7/8 | |||
| S28*22 | S28*22 | S1 3/8*5/8 | |||
| S35*15 | S35*15 | S1 3/8*7/8 | |||
| S35*22 | S35*22 | S1 3/8*1 1/8 | |||
| S35*28 | S35*28 | S1 5/8*5/8 | |||
| S42*15 | S42*15 | S1 5/8*7/8 | |||
| S42*22 | S42*22 | S1 5/8*1 1/8 | |||
| S42*28 | S42*28 | S1 5/8*1 3/8 | |||
| S42*35 | S42*35 | S2 1/8*5/8 | |||
| S54*15 | S54*15 | S2 1/8*7/8 | |||
| S54*22 | S54*22 | S2 1/8*1 1/8 | |||
| S54*28 | S54*28 | S2 1/8*1 3/8 | |||
| S54*35 | S54*35 | S2 1/8*1 5/8 | |||
| S54*42 | S54*42 | S2 5/8*7/8 | |||
| S67*22 | S67*22 | S2 5/8*1 1/8 | |||
| S67*28 | S67*28 | S2 5/8*1 3/8 | |||
| S67*35 | S67*35 | S2 5/8*1 5/8 | |||
| S67*42 | S67*42 | S2 5/8*2 1/8 | |||
| S67*54 | S67*54 | S3 1/8*1 1/8 | |||
| S76*28 | S76*28 | S3 1/8*1 3/8 | |||
| S76*35 | S76*35 | S3 1/8*1 5/8 | |||
| S76*42 | S76*42 | S3 1/8*2 1/8 | |||
| S76*54 | S76*54 | S3 1/8*2 5/8 | |||