Same inner diameter and low volume as steep pipes used for piping, but requiring half the piping space.
| Model | Name | Main Side Thread Size | Sub Main Side Tube & Thread Size |
| STQ | Terminal Quick | M8X1 ~ M18X1 | Φ 4 ~ Φ 16 |
| STB | Terminal Branch | M14X1 ~ M18X1 | Φ 10 ~ Φ 12 |
| STS | Terminal Straight | M12X1 ~ M18X1 | M8X1 ~ M18X1 |
| STT | Terminal Taper | M8X1 ~ M18X1 | M5X0.8 ~ R3/8 |
| SBA | Bushing A | R1/8 ~ R1/2 | |
| SBB | Bushing B | M12X1 ~ M18X1 | M8X1 ~ M14X1 |
| SBC | Bushing C | M8X1 ~ M18X1 | M5X0.8 ~ R1/4 |
| SLB | Elbow | R1/8 ~ R1/2 | |
| SST | Socket | ||
| ASKR | Reducer for Bulkhead | Φ 4 ~ Φ 12 | |
| SPG | Plug | - | |
| SCP | Cap | ||
| SBN | Nipple | ||
| SZB | Bracket | - | |
| SZS | Sanner for Assembling |
GB 13674 
US 12202 
AU 8931 
CA 8621 
IE 4796 
BR 2892 
NZ 2360 
SG 981 
