- Residential regulators
- Commercial/Industrial Regulators
- Alphard P/AP
- 12P
- 133 & 233
- RB 1200 Regulator
- RB 1700/1800
- RB 2000
- RB 3200
- RB 4000
- RB 4600 & RB 4700
- RR16
- RB 1700 Regulator
- SER 10
- Constant Loaded Regulators
- Safety Relief
- Twin Parallel Flow Regulators
- Rotary Meters
- Turbine Meters
- Field Service Regulators
- C&I Diaphragm Meters
- Electronic Volume Converter
- Spring Loaded Regulators

B 531 series
Designed for light to medium commercial applications where the added safety of twin sliding orifices and dual relief is desirable. Small diaphragm cases allow the B531 to respond quickly to fast on/off loads.