These are the pressure regulators we use on our low pressure air tools. We find them to be reliable, and have a 'clutch' system that prevents you from exceeding the maximum pressure (helping to protect your tools from mistakes!). 

Function: Air pressure regulator with relieving design (vents downstream pressure if set pressure is reduced)
Port options: 1/4" BSP
Internal design: Diaphragm type regulator

Test pressure: 12 Bar

Body: Die-cast aluminium
Regulator knob & dome: Nylon

Performance & Features

Maximum flow: 1500 L/min (ANR)
Regulation sensitivity: ±1% F.S.
Temperature range: −10°C to +60°C
Supplied with mounting bracket, pressure gauge, blanking plug and panel mounting ring
Lightweight compact design: 205 g