Wilkins NR3 Pressure Reducing Valve
| 20mm Wilkins NR3 Pressure Reducing Valve (103 - 517 KPA) | W19NR3 |
| 25mm Wilkins NR3 Pressure Reducing Valve (103 - 517 KPA) | W25NR3 |
| 32mm Wilkins NR3 Pressure Reducing Valve (172 - 517 KPA) | W32NR3 |
| 40mm Wilkins NR3 Pressure Reducing Valve (172 - 517 KPA) | W40NR3 |
| 50mm Wilkins NR3 Pressure Reducing Valve (172 - 517 KPA) | W50NR3 |