Features

• Five signal to output ratios meet most control element requirements.
• Control sensitivity of water column allows use in precision applications.
• Large Supply and Exhaust Valves provide high forward and exhaust flows.
• Soft Supply and Exhaust Valve seats minimize air consumption.
• A balanced Supply Valve minimizes the effect of supply pressure variation.
• An Aspirator Tube compensates downstream pressure droop under flow conditions.
• A separate Control Chamber isolates the diaphragm from the main flow to eliminate hunting and buzzing.
• Optional remote feedback port minimizes pressure drop at final control element under flow conditions.
• The optional adjustable By-pass Valve lets you tune for optimum dynamic response. (1:1 ratio only)
• Unit construction lets you service the WBA45 without removing it from the line.