| Model | Series | Connections |
| HC2518000 | RC | IN 3/4'' M |
| HC2526000 | R Series | IN 3/4'' M |
| HC2527000 | R, R Mini | IN/OUT Push Fit |
| HE250H50Z | RU Series | 10mm check valve + fitting R Series Universal |
| HC250G000 | RU Series | Check valve 10mm |
| HC2526H00 | R Series | 3/4'' high temperature |